UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

For the Fiscal Year Ended December 31, 2017

or

For the Transition Period from                      to                     

Commission File Number 1-5581

WATSCO, INC.

(Exact name of registrant as specified in its charter)

2665 South Bayshore Drive, Suite 901

Miami, FL 33133

(Address of principal executive offices, including zip code)

(305) 714-4100

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    YES  ☒    NO  ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    YES  ☐    NO  ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities and Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  ☒    NO  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    YES  ☒    NO  ☐

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ☒

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    YES  ☐    NO  ☒

The aggregate market value of the registrant’s voting common equity held by non-affiliates of the registrant as of June 30, 2017, the last business day of the registrant’s most recently completed second fiscal quarter, was approximately $4,739 million, based on the closing sale price of the registrant’s common stock on that date. For purposes of determining this number, all named executive officers and directors of the registrant as of June 30, 2017 were considered affiliates of the registrant. This number is provided only for the purposes of this Annual Report on Form 10-K and does not represent an admission by either the registrant or any such person as to the affiliate status of such person.

The registrant’s common stock outstanding as of February 23, 2018 comprised (i) 32,005,941 shares of Common stock, excluding 4,823,988 treasury shares, and (ii) 5,301,183 shares of Class B common stock, excluding 48,263 treasury shares.

DOCUMENTS INCORPORATED BY REFERENCE

Certain information required by Parts I and II is incorporated by reference from the registrant’s 2017 Annual Report, attached hereto as Exhibit 13. The information required by Part III (Items 10, 11, 12, 13 and 14) is incorporated herein by reference from the registrant’s definitive proxy statement for the 2018 annual meeting of shareholders (to be filed pursuant to Regulation 14A).

WATSCO, INC. AND SUBSIDIARIES

Form 10-K

For the Fiscal Year Ended December 31, 2017

INDEX

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PART I

Forward-Looking Statements

This Annual Report on Form 10-K contains or incorporates by reference statements that are not historical in nature and that are intended to be, and are hereby identified as, “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995. Statements which are not historical in nature, including the words “anticipate,” “estimate,” “could,” “should,” “may,” “plan,” “seek,” “expect,” “believe,” “intend,” “target,” “will,” “project,” “focused,” “outlook,” and variations of these words and negatives thereof and similar expressions are intended to identify forward-looking statements, including statements regarding, among others, (i) economic conditions, (ii) business and acquisition strategies, (iii) potential acquisitions and/or joint ventures and investments in unconsolidated entities, (iv) financing plans, and (v) industry, demographic, and other trends affecting our financial condition or results of operations. These forward-looking statements are based on management’s current expectations, are not guarantees of future performance and are subject to a number of risks, uncertainties, and changes in circumstances, certain of which are beyond our control. Actual results could differ materially from these forward-looking statements as a result of several factors, including, but not limited to:

We believe these forward-looking statements are reasonable; however, you should not place undue reliance on any forward-looking statements, which are based on current expectations. For additional information regarding other important factors that may affect our operations and could cause actual results to vary materially from those anticipated in the forward-looking statements, please see the discussion included in Item 1A “Risk Factors” of this Annual Report on Form 10-K, as well as the other documents and reports that we file with the SEC. Forward-looking statements speak only as of the date the statements were made. We assume no obligation to update forward-looking information or the discussion of such risks and uncertainties to reflect actual results, changes in assumptions, or changes in other factors affecting forward-looking information, except as required by applicable law. We qualify any and all of our forward-looking statements by these cautionary factors.

General

Watsco, Inc. and its subsidiaries (collectively, “Watsco,” or “we,” “us,” or “our”) was incorporated in Florida in 1956 and is the largest distributor of air conditioning, heating and refrigeration equipment and related parts and supplies (“HVAC/R”) in the HVAC/R distribution industry in North America. At December 31, 2017, we operated from 560 locations in 37 U.S. States, Canada, Mexico and Puerto Rico with additional market coverage on an export basis to portions of Latin America and the Caribbean, through which we serve approximately 90,000 active contractors and dealers that service the replacement and new construction markets. Our revenues in HVAC/R distribution have increased from $64.1 million in 1989 to $4.3 billion in 2017, resulting from our strategic acquisition of companies with established market positions and subsequent building of revenues and profit through a combination of additional locations, introduction of new products, and other initiatives.

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Our principal executive office is located at 2665 South Bayshore Drive, Suite 901, Miami, Florida 33133, and our telephone number is (305) 714-4100. Our website address on the Internet is www.watsco.com and e-mails may be sent to info@watsco.com. Our website address is included in this report only as an inactive textual reference. Information contained on, or available through, our website is not incorporated by reference in, or made a part of, this report.

Air Conditioning, Heating and Refrigeration Industry

The HVAC/R distribution industry is highly fragmented with approximately 2,100 distribution companies. The industry in the United States and Canada is well-established, having had its primary period of growth during the post-World War II era with the advent of affordable central air conditioning and heating systems for both residential and commercial applications. The advent of HVAC/R products in Latin America and the Caribbean is also well-established, but has emerged in more recent years as those economies have grown and products have become more affordable and have matured from luxury to necessity.

Based on data published in the 2018 IBIS World Industry Report for Heating and Air Conditioning Contractors in the U.S. and other available data, we estimate that the annual market on an installed basis for residential central air conditioning, heating, and refrigeration equipment, and related parts and supplies is approximately $88.0 billion. Air conditioning and heating equipment is manufactured primarily by seven major companies that together account for approximately 90% of all units shipped in the United States each year. These companies are: Carrier Corporation (“Carrier”), a subsidiary of United Technologies Corporation; Goodman Manufacturing Company, L.P. (“Goodman”), a subsidiary of Daikin Industries, Ltd.; Rheem Manufacturing Company (“Rheem”); Trane Inc. (“Trane”), a subsidiary of Ingersoll-Rand Company Limited; York International Corporation, a subsidiary of Johnson Controls, Inc.; Lennox International, Inc.; and Nordyne Corporation (“Nordyne”), a subsidiary of Nortek Corporation. These manufacturers distribute their products through a combination of factory-owned and independent distributors who, in turn, supply the equipment and related parts and supplies to contractors and dealers nationwide that sell to and install the products for consumers, businesses, and other end-users.

Air conditioning and heating equipment is sold to the replacement and new construction markets for both residential and commercial applications. The residential replacement market has increased in size and importance over the past several years as a result of the aging of the installed base of residential central air conditioners and furnaces, the introduction of new higher energy efficient models, the remodeling and expansion of existing homes, the addition of central air conditioning to homes that previously had only heating products, and consumers’ overall unwillingness to live without air conditioning or heating products. The mechanical life of central air conditioning and furnaces varies by geographical region due to usage and ranges from approximately 8 to 20 years. According to data published by the Energy Information Administration in 2017 there are approximately 92 million central air conditioning and heating systems installed in the United States that have been in service for more than 10 years. Many installed units are currently reaching the end of their useful lives, which we believe will provide a growing and stable replacement market.

Additionally, we sell a variety of non-equipment products, representing approximately 300,000 SKUs, including parts, ductwork, air movement products, insulation, tools, installation supplies, thermostats, and air quality products. We distribute products manufactured by Honeywell International, Inc. (“Honeywell”), Johns Manville (“Johns Manville”) and Owens Corning Insulating Systems, LLC (“Owens Corning”), among others.

We also sell products to the refrigeration market. These products include condensing units, compressors, evaporators, valves, refrigerant, walk-in coolers, and ice machines for industrial and commercial applications. We distribute products manufactured by Copeland Compressor Corporation, a subsidiary of Emerson Electric Co. (“Emerson”), The Chemours Company (“Chemours”), Mueller Industries, Inc. (“Mueller”), and Welbilt, Inc. (“Welbilt”), among others.

Culture and Business Strategy

We have built our network of locations using a “buy and build” philosophy, which has produced substantial historical long-term growth in revenues and profits. The “buy” component of the strategy has focused on acquiring or investing in market leaders to either expand into new geographic areas or gain additional market share in existing markets. We have employed a disciplined and conservative approach which seeks opportunities that fit well-defined financial and strategic criteria. The “build” component of the strategy has focused on implementing a growth culture at acquired companies, by adding products and locations to better serve customers, investing in scalable technologies, and exchanging ideas and business concepts amongst the executive management teams. Newly acquired businesses have access to our capital resources and established vendor relationships to provide their customers with an expanded array of product lines on favorable terms and conditions with an intensified commitment to service. We have also developed a culture whereby leaders, managers and employees are provided the opportunity to own shares of Watsco through a variety of stock-based equity plans. We believe that this culture instills a performance-driven, long-term focus on the part of our employees and aligns their interests with the interests of other Watsco shareholders.

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Strategy in Existing Markets

Our strategy for growth in existing markets focuses on customer service and product expansion to satisfy the needs of the higher growth, higher margin replacement market, in which customers generally demand immediate, convenient, and reliable service. We respond to this need by (i) offering a broad range of product lines, including the necessary equipment, parts, and supplies to enable a contractor to install or repair a central air conditioner, furnace, or refrigeration system, (ii) maintaining a strong density of warehouse locations for increased customer convenience, (iii) maintaining well-stocked inventories to ensure that customer orders are filled in a timely manner, (iv) providing a high degree of technical expertise at the point of sale, and (v) developing and implementing technology to further enhance customer service capabilities. We believe these concepts provide a competitive advantage over smaller, less-capitalized competitors that are unable to commit resources to open and maintain additional locations, implement technological business solutions, provide the same range of products, maintain the same inventory levels, or attract the wide range of expertise that is required to support a diverse product offering. In some geographic areas, we believe we have a competitive advantage over factory-operated distribution networks, which typically do not maintain inventories of parts and supplies that are as diversified as ours and which have fewer warehouse locations than we do, making it more difficult for these competitors to meet the time-sensitive demands of the replacement market.

In addition to the replacement market, we sell to the new construction market, including new homes and commercial construction. We believe our reputation for reliable, high-quality service, and relationships with contractors, who may serve both the replacement and new construction markets, allows us to compete effectively in these markets.

Technology Strategy

We are actively investing in scalable technology platforms to further strengthen our leadership position. The primary investments are customer-obsessed technologies, which are improving and transforming the customer experience at all of our locations. Specific initiatives include: (i) developing and implementing mobile applications for iOS and Android devices to help customers operate more efficiently and interact with our locations more easily; (ii) enabling e-commerce between our customers and our subsidiaries; (iii) supply chain optimization; (iv) building the largest source of digitized HVAC/R product information; and (v) developing and implementing business analytics systems and related data sets, which provide enhanced management tools.

Performance-Based Compensation & Stock-Based Equity Plans

We maintain a culture that rewards performance through a variety of performance-based pay, commission programs, cash incentives, and stock-based equity programs. Stock-based plans include 401(k) matching contributions to eligible employees, a voluntary employee stock purchase plan, and the granting of stock options and non-vested restricted stock based on individual merit and measures of performance. Our equity compensation plans are designed to promote long-term performance, as well as to create long-term employee retention, continuity of leadership, and an ‘ownership culture’ whereby management and employees think and act as owners of the Company. We believe that our restricted stock program is unique because an employee’s restricted share grants generally vest entirely at the end of his or her career (age 62 or later) and, prior to retirement, these grants remain subject to significant risks of forfeiture.

Product Line Expansion

We actively seek new or expanded territories of distribution from our key equipment suppliers. We continually evaluate new parts and supply products to support equipment sales and further enhance service to our customers. This initiative includes increasing our product offering with existing vendors and identifying new product opportunities through traditional and non-traditional supply channels. We have also introduced private-label products as a means to obtain market share and grow revenues. We believe that our private-label branded products complement our existing product offerings at selected locations, based on customer needs and the particular market position and price of these products.

Acquisition Strategy

We focus on acquiring and investing in businesses that either complement our current presence in existing markets or establish a presence in new geographic markets. Since 1989, we have acquired 59 HVAC/R distribution businesses, six of which currently operate as primary operating subsidiaries. Other smaller acquired distributors have been integrated into or are under the management of our primary operating subsidiaries. Through a combination of sales and market share growth, opening of new locations, tuck-in acquisitions, expansion of product lines, improved pricing, and programs that have resulted in higher gross profit, performance incentives, and a culture of equity value for key leadership, we have produced substantial sales and earnings growth post-acquisition. We continue to pursue additional strategic acquisitions, investments and/or joint ventures to allow further penetration in existing markets and expansion into new geographic markets.

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Operating Philosophy

We encourage our local leadership to operate in a manner that builds upon the long-term relationships they have established with their suppliers and customers. Typically, we maintain the identity and culture of businesses by retaining their historical trade names, management teams and sales organizations, and continuity of their product brand-name offerings. We believe this strategy allows us to build on the value of the acquired operations by creating additional sales opportunities while providing an attractive exit strategy for the former owners of these companies.

We maintain a specialized staff at our corporate headquarters that provides functional support for our subsidiaries’ growth strategies in their respective markets. Such functional support staff includes specialists in finance, accounting, product procurement, information technology, treasury and working capital management, tax planning, risk management, and safety. Certain general and administrative expenses are targeted for cost savings by leveraging the overall business volume and improving operating efficiencies.

DESCRIPTION OF BUSINESS

Products

We sell an expansive line of products and maintain a diverse mix of inventory to meet our customers’ immediate needs, and we seek to provide products a contractor would generally require when installing or repairing a central air conditioner, furnace, or refrigeration system on short notice. The cooling capacity of air conditioning units is measured in tons. One ton of cooling capacity is equivalent to 12,000 British Thermal Units (“BTUs”) and is generally adequate to air condition approximately 500 square feet of residential space. The products we distribute consist of: (i) equipment, including residential ducted and ductless air conditioners ranging from 1 to 5 tons, gas, electric, and oil furnaces ranging from 50,000 to 150,000 BTUs, commercial air conditioning and heating equipment systems ranging from 1-1/2 to 25 tons, and other specialized equipment, (ii) parts, including replacement compressors, evaporator coils, motors, and other component parts and (iii) supplies, including thermostats, insulation material, refrigerants, ductwork, grills, registers, sheet metal, tools, copper tubing, concrete pads, tape, adhesives, and other ancillary supplies.

Sales of HVAC equipment, which we currently source from approximately 20 vendors, accounted for 67% and 66% of our revenues for the years ended December 31, 2017 and 2016, respectively. Sales of other HVAC products, which we currently source from approximately 1,200 vendors, comprised 28% and 29% of our revenues for the years ended December 31, 2017 and 2016, respectively. Sales of commercial refrigeration products, which we currently source from approximately 150 vendors, accounted for 5% of our revenues for both the years ended December 31, 2017 and 2016.

Distribution and Sales

At December 31, 2017, we operated from 560 locations, a vast majority of which are located in regions that we believe have demographic trends favorable to our business. We maintain large inventories at each of our warehouse locations, and either deliver products to customers using one of our trucks or a third party logistics provider, or we make products available for pick-up at the location nearest to the customer. We have approximately 1,000 salespeople, averaging more than 10 years of experience in the HVAC/R distribution industry.

The markets we serve are as follows:

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The largest market we serve is the United States, in which the most significant markets for HVAC/R products are in the Sun Belt States. Accordingly, the majority of our distribution locations are in the Sun Belt, with the highest concentration in Florida and Texas. These markets have been a strategic focus of ours given their size, the reliance by homeowners and businesses on HVAC/R products to maintain a comfortable indoor environment, and the population growth in these areas over the last 40 years, which has led to a substantial installed base requiring replacement, a shorter useful life for equipment given the hours of operation, and the focus by electrical utilities on consumer incentives designed to promote replacement of HVAC/R equipment in an effort to improve energy efficiency.

Markets

The table below identifies the number of our stores by location as of December 31, 2017:

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Joint Ventures with Carrier Corporation

In 2009, we formed a joint venture with Carrier, which we refer to as Carrier Enterprise I, in which Carrier contributed 95 of its company-owned locations in 13 Sun Belt states and Puerto Rico, and its export division in Miami, Florida, and we contributed 15 locations that distributed Carrier products. In July 2012, we exercised our option to acquire an additional 10% ownership interest in Carrier Enterprise I, which increased our ownership interest to 70%; and, on July 1, 2014, we exercised our last remaining option to acquire an additional 10% ownership interest in Carrier Enterprise I, which increased our controlling interest to 80%. Neither we nor Carrier has any remaining options to purchase additional ownership interests in Carrier Enterprise I, or any of our other joint ventures with Carrier, which are described below.

In 2011, we formed a second joint venture with Carrier and completed two additional transactions. In April 2011, Carrier contributed 28 of its company-owned locations in the Northeast U.S. and we contributed 14 locations in the Northeast U.S. In July 2011, we purchased Carrier’s distribution operations in Mexico, which included seven locations. Collectively, the Northeast locations and the Mexico operations are referred to as Carrier Enterprise II. Following formation of this joint venture, we owned a 60% controlling interest. On November 29, 2016, we purchased an additional 10% ownership interest in Carrier Enterprise II, and, on February 13, 2017, we again purchased an additional 10% ownership interest in Carrier Enterprise II, which together increased our controlling interest to 80%.

In 2012, we formed a third joint venture, which we refer to as Carrier Enterprise III, with UTC Canada Corporation, referred to as UTC Canada, an affiliate of Carrier. Carrier contributed 35 of its company-owned locations in Canada to Carrier Enterprise III. We have a 60% controlling interest in Carrier Enterprise III, and UTC Canada has a 40% non-controlling interest.

Combined, the joint ventures with Carrier represented 62% of our revenues for the year ended December 31, 2017. See Supplier Concentration in “Business Risk Factors” in Item 1A.

The business and affairs of the joint ventures are controlled, directed, and managed exclusively by Carrier Enterprise I’s, Carrier Enterprise II’s and Carrier Enterprise III’s respective boards of directors (the “Boards”) pursuant to related operating agreements. The Boards have full, complete and exclusive authority, power, and discretion to manage and control the business, property, and affairs of their respective joint ventures, and to make all decisions regarding those matters and to perform activities customary or incident to the management of such joint ventures, including approval of distributions to us, Carrier and UTC Canada. Each Board is composed of five directors, of whom three directors represent our controlling interest and two directors represent Carrier’s non-controlling interest. Matters presented to the Boards for vote are considered approved or consented to upon the receipt of the affirmative vote of at least a majority of all directors entitled to vote with the exception of certain governance matters, which require joint approval.

Customers and Customer Service

Air conditioning and heating contractors and dealers that install HVAC/R products in homes and businesses must be licensed given the highly-regulated nature of the products, refrigerant, natural gas, and building and zoning requirements. We currently serve approximately 90,000 active contractors and dealers who service the replacement and new construction markets for residential and light commercial central air conditioning, heating, and refrigeration systems. No single customer in 2017, 2016 or 2015 represented more than 2% of our consolidated revenues. We focus on providing products where and when the customer needs them, technical support by phone or on site as required, and quick and efficient service at our locations. Increased customer convenience is also provided through mobile applications and e-commerce, which allows customers to access information online 24 hours a day, seven days a week to search for desired products, verify inventory availability, obtain pricing, place orders, check order status, schedule pickup or delivery times, and make payments. We believe we compete successfully with other distributors primarily based on an experienced sales organization, strong service support, maintenance of well-stocked inventories, density of warehouse locations, high quality reputation, broad product lines, and the ability to foresee customer demand for new products.

Key Supplier Relationships

Given our leadership position, Watsco represents a strategic business relationship to many of the leading manufacturers in our industry. Significant relationships with HVAC/R equipment manufacturers include Carrier, Rheem, Goodman, Welbilt, Mitsubishi Electric Corporation, Gree Electric Appliances, Inc., Trane, Midea Group, and Nordyne. In addition, we have substantial relationships with manufacturers of non-equipment HVAC/R products, including Chemours, Emerson, Flexible Technologies, Inc., Honeywell, Johns Manville, Mueller, and Owens Corning.

We believe the diversity of products that we sell, along with the manufacturers’ current product offerings, quality, marketability, and brand-name recognition, allow us to operate favorably relative to our competitors. To maintain brand-name recognition, HVAC/R equipment manufacturers provide national advertising and participate with us in cooperative advertising programs and promotional incentives that are targeted to both dealers and end-users. We estimate that the replacement market for residential air conditioning equipment is approximately 85% of industry unit sales in the United States, and we expect this percentage to increase as units installed in the past 20 years wear out or otherwise become practical to replace sooner with newer, more energy-efficient models.

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The Company’s top ten suppliers accounted for 84% of our purchases, including 62% from Carrier, and 10% from Rheem. Given the significant concentration of our suppliers, particularly with Carrier and Rheem, any significant interruption with these suppliers could temporarily disrupt the operations of certain of our subsidiaries, impact current inventory levels, and could adversely affect our financial results. If any restrictions or significant increase in tariffs under existing trade agreements or the elimination of the North American Free Trade Agreement (“NAFTA”) are imposed on products that our top ten suppliers import or assemble products outside of the United States, particularly from Mexico and China, we could be required to raise our prices, which may result in the loss of customers and harm to our business. Future financial results are also materially dependent upon the continued market acceptance of these manufacturers’ respective products and their ability to continue to manufacture products that comply with laws relating to environmental and efficiency standards. However, the Company believes that alternative or substitute products would be readily available in the event of disruption of current supplier relationships given the Company’s prominence in the marketplace, including the number of locations, sales personnel, support structure, marketing and sales expertise, financial position, and established market share. See “Business Risk Factors” in Item 1A of this Annual Report on Form 10-K for further discussion.

Distribution Agreements

We maintain trade name and distribution agreements with Carrier and Rheem that provide us distribution rights on an exclusive basis in specified territories that are not subject to a stated term or expiration date. We also maintain distribution agreements with various other suppliers, either on an exclusive or non-exclusive basis, for various terms ranging from one to ten years. Certain distribution agreements contain provisions that restrict or limit the sale of competitive products in the locations that sell such branded products. Other than where such location-level restrictions apply, we may distribute the lines of other manufacturer’s air conditioning or heating equipment in other locations in the same territories.

See Supplier Concentration in “Business Risk Factors” in Item 1A of this Annual Report on Form 10-K.

Seasonality

Sales of residential central air conditioners, heating equipment, and parts and supplies are seasonal. Furthermore, profitability can be impacted favorably or unfavorably based on weather patterns, particularly during Summer and Winter selling seasons. Demand related to the residential central air conditioning replacement market is typically highest in the second and third quarters, and demand for heating equipment is usually highest in the fourth quarter. Demand related to the new construction sectors throughout most of the markets we serve tends to be fairly evenly distributed throughout the year and depends largely on housing completions, and related weather and economic conditions.

Competition

We operate in highly competitive environments. We compete with a number of distributors and also with several air conditioning and heating equipment manufacturers that distribute a significant portion of their products through their own distribution organizations in certain markets. Competition within any given geographic market is based upon product availability, customer service, price, and quality. Competitive pressures or other factors could cause our products or services to lose market acceptance or result in significant price erosion, all of which would have a material adverse effect on our results of operations, cash flows, and liquidity.

Employees

We had approximately 5,200 employees as of December 31, 2017, substantially all of whom are non-union employees. Most of our employees are employed on a full-time basis and our relations with our employees are good.

Order Backlog

Order backlog is not a material aspect of our business and no material portion of our business is subject to government contracts.

Government Regulations, Environmental and Health and Safety Matters

Our business is subject to federal, state and local laws, and regulations relating to the storage, handling, transportation, and release of hazardous materials into the environment. These laws and regulations include the Clean Air Act, relating to minimum energy efficiency standards of HVAC systems, and the production, servicing, and disposal of certain ozone-depleting refrigerants used in such systems, including those established at the Montreal Protocol in 1992 concerning the phase-out of the production of CFC-based refrigerants on January 1, 2010 for use in new equipment. We are also subject to regulations concerning the transport of hazardous materials, including regulations adopted pursuant to the Motor Carrier Safety Act of 1990. Our operations are also subject to health and safety requirements including, but not limited to, the Occupational, Safety and Health Act. We believe that we operate our business in compliance with all applicable federal, state and local laws, and regulations.

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Our industry and business are also subject to a United States Department of Energy (“DOE”) mandate, effective January 1, 2015, that effected changes to the minimum required efficiency of HVAC systems. The DOE divided the United States into three regions, the North, the Southeast, and the Southwest, according to the number of hours that an air conditioner spends cooling a home during the hotter months. Prior to 2015, the national minimum standard for energy efficiency was 13 SEER (seasonal energy efficiency rating, the metric used to measure energy efficiency) for all HVAC equipment produced in the United States. Beginning in 2015, the new standard increased the minimum allowed efficiency to 14 SEER for the Southeast and Southwest regions. During 2015, we began transitioning our 13 SEER inventory in the effected regions to the higher-efficiency 14 SEER inventory, and we completed this transition in 2016 in accordance with the timeline required by the mandate.

Financial Information About Geographic Areas

Our operations are primarily within the United States, including Puerto Rico, Canada and Mexico. Products are also sold from the United States on an export-only basis to portions of Latin America and the Caribbean Basin. The following tables set forth revenues and long-lived assets by geographic area (in millions):

Revenues are attributed to countries based on the location of the store from which the sale occurred. Long-lived assets consist primarily of goodwill and intangible assets, property and equipment, and our investment in an unconsolidated entity.

Available Information

Our website is at www.watsco.com. Our investor relations website is located at www.investors.watsco.com. We make available, free of charge, on our investor relations website under the heading “SEC Filings” our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to those reports filed with or furnished to the Securities and Exchange Commission (the “SEC”) pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. Our website address is included in this report only as an inactive textual reference. Information contained on, or available through, our website is not incorporated by reference in, or made a part of, this report.

Business Risk Factors

Supplier Concentration

The Company’s top ten suppliers accounted for 84% of our purchases during 2017, including 62% from Carrier, and 10% from Rheem. Given the significant concentration of our supply chain, particularly with Carrier and Rheem, any significant interruption by any of the key manufacturers or a termination of a relationship could temporarily disrupt the operations of certain of our subsidiaries. Additionally, our operations are materially dependent upon the continued market acceptance and quality of these manufacturers’ products and their ability to continue to manufacture products that are competitive and that comply with laws relating to environmental and efficiency standards. Our inability to obtain products from one or more of these manufacturers or a decline in market acceptance of these manufacturers’ products could have a material adverse effect on our results of operations, cash flows, and liquidity.

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Many HVAC equipment and component manufacturers, including Carrier and Rheem, source component parts and/or assemble a significant amount of products for residential and light-commercial applications from Mexico. If any restrictions or significant increases in tariffs are imposed related to such products sourced or assembled from Mexico, whether as a result of amendments to existing trade agreements or the elimination of NAFTA, and our product costs consequently increase, we would be required to raise our prices, which may result in cost inflation, the loss of customers, and harm to our business.

We maintain trade name and distribution agreements with Carrier and Rheem that provide us distribution rights on an exclusive basis in specified territories. Such agreements are not subject to a stated term or expiration date.

We also maintain other distribution agreements with various other suppliers, either on an exclusive or non-exclusive basis, for various terms ranging from one to ten years. Certain of the distribution agreements contain provisions that restrict or limit the sale of competitive products in the locations that sell such branded products. Other than where such location-level restrictions apply, we may distribute other manufacturers’ lines of air conditioning or heating equipment in other locations in the same territories.

Risks Inherent in Acquisitions

As part of our strategy, we intend to pursue additional acquisitions of complementary businesses, including through joint ventures and investments in unconsolidated entities. If we complete future acquisitions, including investments in unconsolidated entities, or enter into new joint ventures, we may be required to incur or assume additional debt and/or issue additional shares of our common stock as consideration, which will dilute our existing shareholders’ ownership interest and may affect our results of operations. Growth through acquisitions involves a number of risks, including, but not limited to, the following:

In addition, acquired companies and investments made in unconsolidated entities may have liabilities that we failed or were unable to discover while performing due diligence investigations. We cannot assure you that the indemnification, if any, granted to us by sellers of acquired companies or by joint venture partners will be sufficient in amount, scope, or duration to offset the possible liabilities associated with businesses or properties that we assume upon consummation of an acquisition or joint venture. Any such liabilities, individually or in the aggregate, could have a material adverse effect on our business.

Failure to successfully manage the operational challenges and risks associated with, or resulting from, acquisitions could adversely affect our results of operations, cash flows, and liquidity.

Competition

We operate in highly competitive environments. We compete with other distributors and several air conditioning and heating equipment manufacturers that distribute a significant portion of their products through their own distribution organizations in certain markets. Competition within any given geographic market is based upon product availability, customer service, price, and quality. Competitive pressures or other factors could cause our products or services to lose market acceptance or result in significant price erosion, all of which would have a material adverse effect on our results of operations, cash flows, and liquidity.

Foreign Currency Exchange Rate Fluctuations

The functional currency of our operations in Canada is the Canadian dollar, and the functional currency of our operations in Mexico is the U.S. dollar because the majority of our Mexican transactions are denominated in U.S. dollars. Foreign currency exchange rates and fluctuations may have an impact on transactions denominated in Canadian dollars and Mexican Pesos, and, therefore, could adversely affect our financial performance. Although we use foreign currency forward contracts to mitigate the impact of currency exchange rate movements, we do not currently hold any derivative contracts that hedge our foreign currency translational exposure.

11

Seasonality

Sales of residential central air conditioners, heating equipment, and parts and supplies are seasonal, resulting in fluctuations in our revenue from quarter to quarter. Furthermore, profitability can be impacted favorably or unfavorably based on the severity or mildness of weather patterns during Summer or Winter selling seasons. Demand related to the residential central air conditioning replacement market is typically highest in the second and third quarters, and demand for heating equipment is usually highest in the fourth quarter. Demand related to the new construction sectors throughout most of the markets is fairly evenly distributed throughout the year except for dependence on housing completions, and related weather and economic conditions.

Dependence on Key Personnel

Much of our success has depended on the skills and experience of senior management personnel. The loss of any of our executive officers or other key senior management personnel could harm our business. We must continuously recruit, retain, and motivate management and other employees to both maintain our current business and to execute our strategic initiatives. Our success has also depended on the contributions and abilities of our store employees upon whom we rely to give customers a superior in-store experience. Accordingly, our performance depends on our ability to recruit and retain high quality employees to work in and manage our stores. If we are unable to adequately recruit, retain, and motivate employees our projected growth and expansion, and our business and financial performance may be adversely affected.

Decline in Economic Conditions

We rely predominantly on the credit markets and, to a lesser extent, on the capital markets to meet our financial commitments and short-term liquidity needs if internal funds are not available from our operations. Access to funds under our line of credit is dependent on the ability of the syndicate banks to meet their respective funding commitments. Disruptions in the credit and capital markets could adversely affect our ability to draw on our line of credit and may also affect the determination of certain interest rates, particularly rates based on LIBOR, which is one of the base rates under our line of credit. Any disruptions in these markets could result in increased borrowing costs and/or reduced borrowing capacity under our line of credit. Any long-term disruption could require us to take measures to conserve cash until the markets stabilize, or until alternative credit arrangements or other funding for our business needs can be arranged. Such measures could include reducing or eliminating dividend payments, deferring capital expenditures, and reducing or eliminating other discretionary uses of cash.

A decline in economic conditions and lack of availability of business and consumer credit could have an adverse effect on our business and results of operations. Any capital and credit market disruption could cause broader economic downturns, which may lead to reduced demand for our products and increased incidence of customers’ inability to pay their accounts. Further, bankruptcies or similar events by customers may cause us to incur bad debt expense at levels higher than historically experienced. Also, our suppliers may be negatively impacted by deteriorating economic conditions, causing disruption or delay of product availability. These events would adversely impact our results of operations, cash flows, and financial position. Additionally, if the conditions of the capital and credit markets adversely affect the financial institutions that have committed to extend us credit, they may be unable to fund borrowings under such commitments, which could have an adverse impact on our financial condition, liquidity, and our ability to borrow funds for working capital, acquisitions, capital expenditures, and other corporate purposes.

International Political Risk

Our international sales and operations, as well as sourcing of products from suppliers with international operations, are subject to various risks associated with changes in local laws, regulations and policies, including those related to tariffs, trade restrictions and trade agreements, investments, taxation, capital controls, employment regulations, different liability standards and limitations on the repatriation of funds due to foreign currency controls. Our international sales and operations, as well as sourcing of products from suppliers with international operations are also sensitive to changes in foreign national priorities, including government budgets, as well as political and economic instability. Unfavorable changes in any of the foregoing could adversely affect our results of operations or could cause a disruption in our supply chain for products sourced internationally. Additionally, failure to comply with the United States Foreign Corrupt Practices Act could subject us to, among other things, penalties and legal expenses that could harm our reputation and have a material adverse effect on our business, financial condition and results of operations.

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General Risk Factors

Goodwill, Intangibles and Long-Lived Assets

At December 31, 2017, goodwill, intangibles, and long-lived assets represented approximately 30% of our total assets. The recoverability of goodwill, indefinite lived intangibles, and long-lived assets is evaluated at least annually and when events or changes in circumstances indicate that the carrying amounts may not be recoverable. The identification and measurement of goodwill impairment involves the estimation of the fair value of our reporting unit and contains uncertainty because management must use judgment in determining appropriate assumptions to be used in the measurement of fair value. The estimates of fair value of our reporting unit, indefinite lived intangibles, and long-lived assets are based on the best information available as of the date of the assessment and incorporates management’s assumptions about expected future cash flows and contemplates other valuation techniques. Future cash flows can be affected by changes in the industry, a declining economic environment, or market conditions. We cannot assure you that we will not suffer material impairments to goodwill, intangibles, or long-lived assets in the future.

Risks Related to Insurance Coverage

We carry general liability, comprehensive property damage, workers’ compensation, health benefits, and other insurance coverage that management considers adequate for the protection of its assets and operations. There can be no assurance that the coverage limits of such policies will be adequate to cover losses and expenses for lawsuits which have been, or may be, brought against us. A loss in excess of insurance coverage could have a material adverse effect on our financial position and/or profitability. Certain self-insurance risks for casualty insurance programs and health benefits are retained and reserves are established based on claims filed and estimates of claims incurred but not yet reported. Assurance cannot be provided that actual claims will not exceed present estimates. Exposure to catastrophic losses has been limited by maintaining excess and aggregate liability coverage and implementing stop-loss control programs.

Risks Related to our Common Stock

Class B Common Stock and Insider Ownership

As of December 31, 2017, our directors and executive officers and entities affiliated with them owned (i) Common stock representing 1% of the outstanding shares of Common stock and (ii) Class B common stock representing 90% of the outstanding shares of Class B common stock. These interests represent 56% of the aggregate combined voting power (including 52% beneficially owned by Albert H. Nahmad, Chairman and Chief Executive Officer, through shares owned by him and shares held by affiliated limited partnerships and various family trusts). Accordingly, our directors and executive officers collectively have the voting power to elect six members of our nine-person Board of Directors.

Our Class B common stock is substantially identical to our Common stock except: (i) Common stock is entitled to one vote on all matters submitted to a vote of our shareholders, and each share of Class B common stock is entitled to ten votes; (ii) shareholders of Common stock are entitled to elect 25% of our Board of Directors (rounded up to the nearest whole number), and Class B shareholders are entitled to elect the balance of the Board of Directors; (iii) cash dividends may be paid on Common stock without paying a cash dividend on Class B common stock, and no cash dividend may be paid on Class B common stock unless at least an equal cash dividend is paid on Common stock; and (iv) Class B common stock is convertible at any time into Common stock on a one-for-one basis at the option of the shareholder.

Future Sales

In 2017, we issued and sold an aggregate of approximately $250.0 million of our Common stock under our previously reported “at the market” offering program. We are not restricted from issuing additional shares of our Common stock or Class B common stock (which we refer to together as common stock), including securities that are convertible into or exchangeable for, or that represent the right to receive, our common stock or any substantially similar securities in the future. We may issue shares of our common stock or other securities in one or more registered or unregistered offerings, and we may also issue our securities in connection with investments or acquisitions. The number of shares of our common stock issued in connection with any of the foregoing may result in dilution to holders of our common stock.

Volatility

The market price of our common stock may be highly volatile and could be subject to wide fluctuations. Securities markets worldwide experience significant price and volume fluctuations. This market volatility, as well as general economic, market or political conditions, could reduce the market price of shares of our common stock in spite of our operating performance. The trading price of our common stock may be adversely affected due to a number of factors, most of which we cannot predict or control, such as the following:

Trading Liquidity

The trading market for our common stock is limited, and there can be no assurance that a more liquid trading market for our common stock will develop. There can be no assurance as to the liquidity of any market for our common stock, the ability of the holders of our common stock to sell any of their securities and the price at which the holders of our common stock will be able to sell such securities.

Payment of Dividends

The amount of any future dividends that we will pay, if any, will depend upon a number of factors. Future dividends will be declared and paid at the sole discretion of the Board of Directors and will depend upon such factors as cash flow generated by operations, profitability, financial condition, cash requirements, future prospects, and other factors deemed relevant by our Board of Directors. The right of our Board of Directors to declare dividends, however, is subject to the availability of sufficient funds under Florida law to pay dividends. In addition, our ability to pay dividends depends on certain restrictions in our credit agreement.

Securities Analyst Research and Reports

The trading markets for our common stock rely in part on the research and reports that industry or financial analysts publish about us or our business or industry. If one or more of the analysts who cover us downgrade our stock or our industry, or the stock of any of our competitors, or publish negative or unfavorable research about our business, the price of our stock could decline. If one or more of these analysts cease coverage of us or fail to publish reports on us regularly, we could lose visibility in the market, which in turn could cause our stock price or trading volume to decline.

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None.

Our main properties include warehousing and distribution facilities, trucks, and administrative office space.

Warehousing and Distribution Facilities

At December 31, 2017, we operated 560 warehousing and distribution facilities across 37 U.S. states, Canada, Mexico, and Puerto Rico, having an aggregate of approximately 12.2 million square feet of space, of which approximately 11.9 million square feet is leased. The majority of these leases are for terms of three to five years. We believe that our facilities are sufficient to meet our present operating needs.

Trucks

At December 31, 2017, we operated 651 ground transport vehicles, including delivery and pick-up trucks, vans, and tractors. Of this number, 433 trucks were leased and the rest were owned. We believe that the present size of our truck fleet is adequate to support our operations.

Administrative Facilities

Senior management and support staff are located at various administrative offices in approximately 0.2 million square feet of space.

14

Information with respect to this item may be found in Note 16 to our audited consolidated financial statements contained in this Annual Report on Form 10-K under the caption “Litigation, Claims and Assessments,” which information is incorporated by reference in this Item 3 of Part I of this Annual Report on Form 10-K.

Not applicable.

PART II

Stock Exchange Information, Common Share Price Performance and Dividends

Our Common stock is listed on the New York Stock Exchange under the ticker symbol WSO, and our Class B common stock is listed on the New York Stock Exchange under the ticker symbol WSOB.

Our 2017 Annual Report contains “Information on Common Stock”, which contains the high and low sales prices and dividend information with respect to our Common stock and Class B common stock for the years ended December 31, 2017 and 2016, and is incorporated herein by reference.

Shareholder Return Performance

The following graph compares the cumulative five-year total shareholder return attained by holders of our Common stock and Class B common stock relative to the cumulative total returns of the S&P MidCap 400 index, the S&P 500 index, and the Russell 2000 index. Given our position as the largest distributor of HVAC/R equipment, parts and supplies in North America, our unique, sole line of business, the nature of our customers (air conditioning and heating contractors), and the products and markets we serve, we cannot reasonably identify an appropriate peer group; therefore, we have included in the graph below the performance of the S&P MidCap 400 index, the S&P 500 index, and the Russell 2000 index, which contain companies with market capitalizations similar to our own. An investment of $100 (with reinvestment of all dividends) is assumed to have been made in our common stock and in each index on December 31, 2012 and its relative performance is tracked through December 31, 2017.

The performance graph shall not be deemed incorporated by reference by any general statement incorporating by reference this annual report into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the extent we specifically incorporate this information by reference, and shall not otherwise be deemed filed under such acts.

15

Comparison of 5 Year Cumulative Total Shareholder Return*

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

In September 1999, our Board of Directors authorized the repurchase, at management’s discretion, of up to 7,500,000 shares of common stock in the open market or via private transactions. No shares were repurchased under this plan during 2017, 2016 or 2015. In aggregate, 6,370,913 shares of Common and Class B common stock have been repurchased at a cost of $114.4 million since the inception of this plan. At December 31, 2017, there were 1,129,087 shares remaining authorized for repurchase under this plan. We did not otherwise repurchase any of our common stock during the quarter ended December 31, 2017.

16

Dividends

Cash dividends per share of $4.60, $3.60 and $2.80 for both Common and Class B common stock were paid in 2017, 2016 and 2015, respectively. Future dividends will be declared and paid at the sole discretion of the Board of Directors and will depend upon such factors as cash flow generated by operations, profitability, financial condition, cash requirements, future prospects, and other factors deemed relevant by our Board of Directors.

Our 2017 Annual Report contains “Selected Consolidated Financial Data”, which section is incorporated herein by reference.

Our 2017 Annual Report contains “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, which section is incorporated herein by reference.

Our 2017 Annual Report contains “Quantitative and Qualitative Disclosures about Market Risk”, which section is incorporated herein by reference.

Our 2017 and 2016 Consolidated Balance Sheets and other consolidated financial statements for the years ended December 31, 2017, 2016 and 2015, together with the report thereon of KPMG LLP dated March 1, 2018, included in our 2017 Annual Report are incorporated herein by reference.

The 2017 and 2016 unaudited Selected Quarterly Financial Data appearing in our 2017 Annual Report is incorporated herein by reference.

None.

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (“the Exchange Act”)), that are, among other things, designed to ensure that information required to be disclosed by us under the Exchange Act is accumulated and communicated to management, including our Chief Executive Officer (“CEO”), Senior Vice President (“SVP”) and Chief Financial Officer (“CFO”), to allow for timely decisions regarding required disclosure and appropriate SEC filings.

Our management, with the participation of our CEO, SVP and CFO, evaluated the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report, and, based on that evaluation, our CEO, SVP and CFO concluded that our disclosure controls and procedures were effective, at a reasonable assurance level, as of such date.

Management’s Report on Internal Control over Financial Reporting

Our 2017 Annual Report contains “Management’s Report on Internal Control over Financial Reporting” and the report thereon of KPMG LLP dated March 1, 2018, and each is incorporated herein by reference.

Changes in Internal Control over Financial Reporting

We are continuously seeking to improve the efficiency and effectiveness of our operations and of our internal controls. This results in refinements to processes throughout the Company. However, there were no changes in internal controls over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended December 31, 2017, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

17

None.

PART III

This part of Form 10-K, which includes Items 10 through 14, is omitted because we will file definitive proxy material pursuant to Regulation 14A not more than 120 days after the close of our most recently ended fiscal year, which proxy material will include the information required by Items 10 through 14 and is incorporated herein by reference.

PART IV

INDEX TO EXHIBITS

18

19

20

None.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

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EXHIBIT 13

WATSCO, INC. AND SUBSIDIARIES

SELECTED CONSOLIDATED FINANCIAL DATA

The following selected consolidated financial data should be read in conjunction with the audited consolidated financial statements, including the notes thereto, included under Item 8 of Part II, “Financial Statements and Supplementary Data,” and the information contained in Item 7 of Part II, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Annual Report on Form 10-K for the year ended December 31, 2017.

WATSCO, INC. AND SUBSIDIARIES

MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statements

This Annual Report on Form 10-K contains or incorporates by reference statements that are not historical in nature and that are intended to be, and are hereby identified as, “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995. Statements which are not historical in nature, including the words “anticipate,” “estimate,” “could,” “should,” “may,” “plan,” “seek,” “expect,” “believe,” “intend,” “target,” “will,” “project,” “focused,” “outlook,” and variations of these words and negatives thereof and similar expressions are intended to identify forward-looking statements, including statements regarding, among others, (i) economic conditions, (ii) business and acquisition strategies, (iii) potential acquisitions and/or joint ventures and investments in unconsolidated entities, (iv) financing plans, and (v) industry, demographic and other trends affecting our financial condition or results of operations. These forward-looking statements are based on management’s current expectations, are not guarantees of future performance and are subject to a number of risks, uncertainties, and changes in circumstances, certain of which are beyond our control. Actual results could differ materially from these forward-looking statements as a result of several factors, including, but not limited to:

We believe these forward-looking statements are reasonable; however, you should not place undue reliance on any forward-looking statements, which are based on current expectations. For additional information regarding other important factors that may affect our operations and could cause actual results to vary materially from those anticipated in the forward-looking statements, please see the discussion included in Item 1A “Risk Factors” of this Annual Report on Form 10-K, as well as the other documents and reports that we file with the SEC. Forward-looking statements speak only as of the date the statements were made. We assume no obligation to update forward-looking information or the discussion of such risks and uncertainties to reflect actual results, changes in assumptions, or changes in other factors affecting forward-looking information, except as required by applicable law. We qualify any and all of our forward-looking statements by these cautionary factors.

The following information should be read in conjunction with the information contained in Item 1A, “Risk Factors” and the consolidated financial statements, including the notes thereto, included under Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K for the year ended December 31, 2017.

Company Overview

Watsco, Inc. was incorporated in Florida in 1956, and, together with its subsidiaries (collectively, “Watsco,” or “we,” “us,” or “our”) is the largest distributor of air conditioning, heating, and refrigeration equipment, and related parts and supplies (“HVAC/R”) in the HVAC/R distribution industry in North America. At December 31, 2017, we operated from 560 locations in 37 U.S. States, Canada, Mexico, and Puerto Rico with additional market coverage on an export basis to portions of Latin America and the Caribbean.

Revenues primarily consist of sales of air conditioning, heating, and refrigeration equipment, and related parts and supplies. Selling, general and administrative expenses primarily consist of selling expenses, the largest components of which are salaries, commissions, and marketing expenses that are variable and correlate to changes in sales. Other significant selling, general and administrative expenses relate to the operation of warehouse facilities, including a fleet of trucks and forklifts, and facility rent, which are payable mostly under non-cancelable operating leases.

Sales of residential central air conditioners, heating equipment, and parts and supplies are seasonal. Furthermore, results of operations can be impacted favorably or unfavorably based on weather patterns, primarily during the Summer and Winter selling seasons. Demand related to the residential central air conditioning replacement market is typically highest in the second and third quarters, and demand for heating equipment is usually highest in the fourth quarter. Demand related to the new construction market is fairly evenly distributed throughout the year, subject to weather and economic conditions, including their effect on the number of housing completions.

Joint Ventures with Carrier Corporation

In 2009, we formed a joint venture with Carrier Corporation (“Carrier”), which we refer to as Carrier Enterprise I, in which Carrier contributed 95 of its company-owned locations in 13 Sun Belt states and Puerto Rico, and its export division in Miami, Florida, and we contributed 15 locations that distributed Carrier products. In July 2012, we exercised our option to acquire an additional 10% ownership interest in Carrier Enterprise I, which increased our ownership interest to 70%; and, on July 1, 2014, we exercised our last remaining option to acquire an additional 10% ownership interest in Carrier Enterprise I, which increased our controlling interest to 80%. Neither Watsco nor Carrier has any remaining options to purchase additional ownership interests in Carrier Enterprise I or any of our other joint ventures with Carrier, which are described below.

In 2011, we formed a second joint venture with Carrier and completed two additional transactions. In April 2011, Carrier contributed 28 of its company-owned locations in the Northeast U.S., and we contributed 14 locations in the Northeast U.S. In July 2011, we purchased Carrier’s distribution operations in Mexico, which included seven locations. Collectively, the Northeast locations and the Mexico operations are referred to as Carrier Enterprise II. On November 29, 2016, we purchased an additional 10% ownership interest in Carrier Enterprise II, and, on February 13, 2017, we again purchased an additional 10% ownership interest in Carrier Enterprise II, which together increased our controlling interest to 80%.

In 2012, we formed a third joint venture, which we refer to as Carrier Enterprise III, with UTC Canada Corporation, referred to as UTC Canada, an affiliate of Carrier. Carrier contributed 35 of its company-owned locations in Canada to Carrier Enterprise III. We have a 60% controlling interest in Carrier Enterprise III, and UTC Canada has a 40% non-controlling interest.

Critical Accounting Policies

Management’s discussion and analysis of financial condition and results of operations is based upon the consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amount of revenues and expenses during the reporting period. Actual results may differ from these estimates under different assumptions or conditions. At least quarterly, management reevaluates its judgments and estimates, which are based on historical experience, current trends, and various other assumptions that are believed to be reasonable under the circumstances.

Our significant accounting policies are discussed in Note 1 to our audited consolidated financial statements included with this Annual Report on Form 10-K. Management believes that the following accounting policies include a higher degree of judgment and/or complexity and, thus, are considered to be critical accounting policies. Management has discussed the development and selection of critical accounting policies with the Audit Committee of the Board of Directors and the Audit Committee has reviewed the disclosures relating to them.

Allowance for Doubtful Accounts

An allowance for doubtful accounts is maintained for estimated losses resulting from the inability of customers to make required payments. We typically do not require our customers to provide collateral. Accounting for doubtful accounts contains uncertainty because management must use judgment to assess the collectability of these accounts. When preparing these estimates, management considers several factors, including the aging of a customer’s account, past transactions with customers, creditworthiness of specific customers, historical trends and other information. Our business is seasonal and our customers’ businesses are also seasonal. Sales are lowest during the first and fourth quarters, and past due accounts receivable balances as a percentage of total trade receivables generally increase during these quarters. We review our accounts receivable reserve policy periodically, reflecting current risks, trends, and changes in industry conditions.

The allowance for doubtful accounts was $6.1 million and $6.2 million at December 31, 2017 and 2016, respectively, a decrease of $0.1 million. Accounts receivable balances greater than 90 days past due as a percent of accounts receivable at December 31, 2017 decreased to 1.3% from 1.6% at December 31, 2016. These decreases were primarily attributable to an improvement in the underlying quality of our accounts receivable portfolio at December 31, 2017.

Although we believe the allowance for doubtful accounts is sufficient, a decline in economic conditions could lead to the deterioration in the financial condition of our customers, resulting in an impairment of their ability to make payments and requiring additional allowances that could materially impact our consolidated results of operations. We believe our exposure to customer credit risk is limited due to the large number of customers comprising our customer base and their dispersion across many different geographical regions. Additionally, we mitigate credit risk through credit insurance programs.

Inventory Valuation Reserves

Inventory valuation reserves are established to report inventories at the lower of cost using the weighted-average and the first-in, first-out methods, or net realizable value. As part of the valuation process, inventories are adjusted to reflect excess, slow-moving, and damaged goods. The valuation process contains uncertainty because management must make estimates and use judgment to determine the future salability of inventories. Inventory policies are reviewed periodically, reflecting current risks, trends, and changes in industry conditions. A reserve for estimated inventory shrinkage is also maintained and reflects the results of cycle count programs and physical inventories. When preparing these estimates, management considers historical results, inventory levels, and current operating trends.

Valuation of Goodwill, Indefinite Lived Intangible Assets and Long-Lived Assets

The recoverability of goodwill is evaluated at least annually and when events or changes in circumstances indicate that the carrying amount may not be recoverable. We have one reporting unit that is subject to goodwill impairment testing. In performing the goodwill impairment test, we use a two-step approach. The first step compares the reporting unit’s fair value to its carrying value. If the carrying value exceeds the fair value, a second step is performed to measure the amount of impairment loss, if any. The identification and measurement of goodwill impairment involves the estimation of the fair value of our reporting unit and contains uncertainty because management must use judgment in determining appropriate assumptions to be used in the measurement of fair value. On January 1, 2018, we performed our annual evaluation of goodwill impairment and determined that the estimated fair value of our reporting unit significantly exceeded its carrying value.

The recoverability of indefinite lived intangibles and long-lived assets are also evaluated on an annual basis or more often if deemed necessary. Indefinite lived intangibles and long-lived assets not subject to amortization are assessed for impairment by comparing the fair value of the intangible asset or long-lived asset to its carrying amount to determine if a write-down to fair value is required. Our annual evaluation did not indicate any impairment of indefinite lived intangibles or long-lived assets.

The estimates of fair value of our reporting unit, indefinite lived intangibles, and long-lived assets are based on the best information available as of the date of the assessment and incorporates management’s assumptions about expected future cash flows and contemplates other valuation techniques. Future cash flows can be affected by changes in the industry, a declining economic environment, or market conditions. There have been no events or circumstances from the date of our assessments that would have had an impact on this conclusion. The carrying amounts of goodwill, intangibles, and long-lived assets were $611.3 million and $538.3 million at December 31, 2017 and 2016, respectively. Although no impairment losses have been recorded to date, there can be no assurance that impairments will not occur in the future. An adjustment to the carrying value of goodwill, intangibles, and long-lived assets could materially adversely impact the consolidated results of operations.

Self-Insurance Reserves

Self-insurance reserves are maintained relative to company-wide casualty insurance and health benefit programs. The level of exposure from catastrophic events is limited by the purchase of stop-loss and aggregate liability reinsurance coverage. When estimating the self-insurance liabilities and related reserves, management considers several factors, which include historical claims experience, demographic factors, severity factors, and valuations provided by independent third-party actuaries.

Management reviews its assumptions with its independent third-party actuaries to evaluate whether self-insurance reserves are adequate. If actual claims or adverse development of loss reserves occur and exceed these estimates, additional reserves may be required and could materially impact the consolidated results of operations. The estimation process contains uncertainty since management must use judgment to estimate the ultimate cost that will be incurred to settle reported claims and unreported claims for incidents incurred but not reported as of the balance sheet date. Reserves in the amounts of $2.3 million and $3.0 million at December 31, 2017 and 2016, respectively, were established related to such insurance programs.

Income Taxes

Income taxes are accounted for under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial reporting basis and the tax basis of assets and liabilities at enacted tax rates expected to be in effect when such amounts are recovered or settled. The use of estimates by management is required to determine income tax expense, deferred tax assets, and any related valuation allowance and deferred tax liabilities. No valuation allowance was recorded at December 31, 2017 or 2016. The valuation allowance is based on estimates of future taxable income by jurisdiction in which the deferred tax assets will be recoverable. These estimates can be affected by several factors, including changes to tax laws, or possible tax audits, or general economic conditions, or competitive pressures that could affect future taxable income. Although management believes that the estimates are reasonable, the deferred tax asset and any related valuation allowance will need to be adjusted if management’s estimates of future taxable income differ from actual taxable income. An adjustment to the deferred tax asset and any related valuation allowance could materially impact the consolidated results of operations.

New Accounting Standards

Refer to Note 1 to our audited consolidated financial statements included in this Annual Report on Form 10-K for a discussion of recently adopted and to be adopted accounting standards.

Results of Operations

The following table summarizes information derived from our audited consolidated statements of income, expressed as a percentage of revenues, for the years ended December 31, 2017, 2016 and 2015.

Note: Due to rounding, percentages may not add up to 100.

The following narratives reflect our approximate 35% ownership interest in Russell Sigler, Inc. (“RSI”) purchased in June 2017, our additional 10% ownership interest in Carrier Enterprise II, which became effective on February 13, 2017, and our additional 10% ownership interest in Carrier Enterprise II, which became effective on November 29, 2016. We did not make any material acquisitions of businesses during 2017, 2016 or 2015.

In the following narratives, computations and other information referring to “same-store basis” exclude the effects of locations acquired or locations opened or closed during the immediately preceding 12 months, unless they are within close geographical proximity to existing locations. At December 31, 2017 and 2016, 35 and 21 locations, respectively, were excluded from “same-store basis” information. The table below summarizes the changes in our locations for 2017 and 2016:

2017 Compared to 2016

Revenues

Revenues for 2017 increased $121.3 million, or 3%, to $4,342.0 million, including $5.7 million from locations opened during the preceding 12 months, offset by $24.5 million from locations closed. On a same-store basis, revenues increased $140.1 million, or 3%, as compared to 2016, reflecting a 4% increase in sales of HVAC equipment (67% of sales), which included a 5% increase in residential HVAC equipment and a 2% increase in commercial HVAC equipment, a 1% increase in sales of other HVAC products (28% of sales), and flat sales of commercial refrigeration products (5% of sales). The increase in revenues was primarily due to demand for the replacement of residential HVAC equipment.

Gross Profit

Gross profit for 2017 increased $31.1 million, or 3%, to $1,065.7 million, primarily as a result of increased revenues. Gross profit margin remained consistent at 24.5% in 2017 as compared to 2016.

Selling, General and Administrative Expenses

Selling, general and administrative expenses for 2017 increased $26.7 million, or 4%, to $715.7 million, primarily due to increased revenues, additional sales and service-related headcount, and increased costs related to ongoing technology initiatives. Selling, general and administrative expenses as a percentage of revenues for 2017 increased to 16.5% versus 16.3% in 2016.

Other Income

Other income of $3.9 million for 2017 represents our approximate 35% share of the net income of RSI, purchased in June 2017.

Operating Income

Operating income for 2017 increased $8.2 million, or 2%, to $353.9 million. Operating margin remained consistent at 8.2% in 2017 as compared to 2016.

Interest Expense, Net

Interest expense, net, for 2017 increased $2.7 million, or 71%, to $6.4 million, primarily as a result of an increase in average outstanding borrowings and a higher effective interest rate in 2017, in each case as compared to 2016.

Income Taxes

Income taxes decreased to $90.2 million for 2017, as compared to $105.9 million for 2016, and are a composite of the income taxes attributable to our wholly-owned operations and income taxes attributable to the Carrier joint ventures, which are primarily taxed as partnerships for income tax purposes. The effective income tax rates attributable to Watsco were 29.8% and 36.0% in 2017 and 2016, respectively.

On December 22, 2017 Public Law 115-97 “An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018” was enacted. This law is commonly referred to as the Tax Cuts and Jobs Act of 2017 (the “TCJA”). The 2017 effective income tax rate attributable to us reflects a decrease in income taxes due to the revaluation of our U.S. deferred income taxes, partially offset by an increase in income taxes related to previously undistributed earnings of our foreign subsidiaries because of the TCJA. The decrease in 2017’s effective rate also reflects higher share-based payment deductions in 2017 as compared to 2016. Refer to Note 7 to our audited consolidated financial statements included in this Annual Report on Form 10-K for further discussion of the TCJA’s impact on us.

We currently estimate our 2018 effective income tax rate attributable to Watsco will be approximately 24% to 25%, and our 2018 effective income tax rate, net of taxes attributable to the non-controlling interest, to be approximately 21% to 22%, subject to the refinement of provisional adjustments related to the TCJA. The rate may also change due to additional guidance and interpretations related to the TCJA, as well as the impact of the prospective tax related to certain global intangible low-taxed income of foreign subsidiaries. We anticipate some variability in the tax rate quarter to quarter in 2018 from potential discrete items.

Net Income Attributable to Watsco, Inc.

Net income attributable to Watsco in 2017 increased $25.4 million, or 14%, to $208.2 million. The increase was primarily driven by higher revenues and other income, as discussed above, a reduction in income taxes, and increase in net income attributable to the non-controlling interest related to Carrier Enterprise II following our purchases of additional 10% ownership interests in both November 2016 and February 2017.

2016 Compared to 2015

Revenues

Revenues for 2016 increased $107.5 million, or 3%, to $4,220.7 million, including $1.4 million from locations opened during the preceding 12 months, offset by $18.4 million from locations closed. On a same-store basis, revenues increased $124.5 million, or 3%, as compared to 2015, reflecting a 3% increase in sales of HVAC equipment (66% of sales), which included a 4% increase in residential HVAC equipment and a 1% increase in commercial HVAC equipment, a 1% increase in sales of other HVAC products (29% of sales), and a 6% increase in sales of commercial refrigeration products (5% of sales). The increase in revenues was primarily due to demand for the replacement of residential HVAC equipment.

Gross Profit

Gross profit for 2016 increased $27.2 million, or 3%, to $1,034.6 million, primarily as a result of increased revenues. Gross profit margin remained consistent at 24.5% in 2016 as compared to 2015.

Selling, General and Administrative Expenses

Selling, general and administrative expenses for 2016 increased $18.3 million, or 3%, to $689.0 million, primarily due to increased revenues as well as $3.3 million of additional costs related to ongoing technology initiatives. Selling, general and administrative expenses as a percentage of revenues remained consistent at 16.3% in 2016 as compared to 2015.

Operating Income

Operating income for 2016 increased $8.9 million, or 3%, to $345.6 million. Operating margin remained consistent at 8.2% in 2016 as compared to 2015.

Interest Expense, Net

Interest expense, net, for 2016 decreased $1.8 million, or 33%, to $3.7 million, primarily as a result of a decrease in average outstanding borrowings, partially offset by a higher effective interest rate in 2016, in each case as compared to 2015.

Income Taxes

Income taxes increased to $105.9 million for 2016, as compared to $104.7 million for 2015, and are a composite of the income taxes attributable to our wholly-owned operations and income taxes attributable to the Carrier joint ventures, which are primarily taxed as partnerships for income tax purposes. The effective income tax rates attributable to Watsco were 36.0% and 37.0% in 2016 and 2015, respectively. The decrease was primarily due to a $2.9 million benefit from share-based payment deductions in 2016.

Net Income Attributable to Watsco, Inc.

Net income attributable to Watsco in 2016 increased $9.9 million, or 6%, to $182.8 million. The increase was primarily driven by higher revenues and by a reduction in the net income attributable to the non-controlling interest related to Carrier Enterprise II following our purchase of an additional 10% ownership interest in Carrier Enterprise II in November 2016.

Liquidity and Capital Resources

We assess our liquidity in terms of our ability to generate cash to execute our business strategy and fund operating and investing activities, taking into consideration the seasonal demand for HVAC/R products, which peaks in the months of May through August. Significant factors that could affect our liquidity include the following:

Sources and Uses of Cash

We rely on cash flows from operations and borrowing capacity under our revolving credit agreement to fund seasonal working capital needs and for other general corporate purposes, including dividend payments (to the extent declared by our Board of Directors), capital expenditures, business acquisitions, and development of our long-term operating and technology strategies. Additionally, we may also generate cash through the issuance and sale of our Common stock.

As of December 31, 2017, we had $80.5 million of cash and cash equivalents, of which $75.9 million was held by foreign subsidiaries. The repatriation of cash balances from our foreign subsidiaries could have adverse tax consequences or be subject to capital controls; however, these balances are generally available without legal restrictions to fund the ordinary business operations of our foreign subsidiaries.

We believe that our operating cash flows, cash on hand, and funds available for borrowing under our revolving credit agreement are sufficient to meet our liquidity needs in the foreseeable future. However, there can be no assurance that our current sources of available funds will be sufficient to meet our cash requirements.

Our access to funds under our revolving credit agreement depends on the ability of the syndicate banks to meet their respective funding commitments. Disruptions in the credit and capital markets could adversely affect our ability to draw on our revolving credit agreement and may also adversely affect the determination of interest rates, particularly rates based on LIBOR, which is one of the base rates under our revolving credit agreement. Disruptions in the credit and capital markets could also result in increased borrowing costs and/or reduced borrowing capacity under our revolving credit agreement.

Working Capital

Working capital decreased to $920.9 million at December 31, 2017 from $925.3 million at December 31, 2016.

Cash Flows

The following table summarizes our cash flow activity for 2017 and 2016 (in millions):

The individual items contributing to cash flow changes for the years presented are detailed in the audited consolidated statements of cash flows contained in this Annual Report on Form 10-K.

Operating Activities

Net cash provided by operating activities increased primarily due to higher net income in 2017 as compared to 2016.

Investing Activities

Net cash used in investing activities increased primarily due to the purchase of an ownership interest in RSI for $63.6 million, partially offset by a decrease in capital expenditures in 2017.

Financing Activities

Net cash used in financing activities decreased primarily due to $247.7 million in proceeds from the sale of Common stock used for repayments under our revolving credit agreement, an increase in dividends paid, and higher distributions paid to the non-controlling interest in 2017.

At-the-Market Offering Program

On August 23, 2017, we entered into a sales agreement with Robert W. Baird & Co. Inc., which enabled the Company to issue and sell shares of Common stock in one or more negotiated transactions that are deemed to be “at the market” offerings as defined in Rule 415 under the Securities Act of 1933, as amended (the “Securities Act”), for a maximum aggregate offering amount of up to $250.0 million (the “ATM Program”). The offer and sale of our Common stock pursuant to the ATM Program was registered under the Securities Act pursuant to our automatically effective shelf registration statement on Form S-3 (File No. 333-207831).

During 2017, we sold 1,498,662 shares of Common stock under the ATM Program for net proceeds of $247.7 million. Direct costs of $0.3 million incurred in connection with the offering were charged against the proceeds from the sale of Common stock and reflected as a reduction of paid-in capital. As of December 31, 2017, we had completed the offering of shares under the ATM Program. The net proceeds were primarily used to repay outstanding debt and for general corporate purposes.

Revolving Credit Agreement

We maintain an unsecured, syndicated revolving credit agreement, which we use to fund seasonal working capital needs and for other general corporate purposes, including acquisitions, dividends (if and as declared by our Board of Directors), capital expenditures, stock repurchases, and issuances of letters of credit. Effective February 5, 2018, we decreased the borrowing capacity under this credit agreement from $600.0 million to $300.0 million. Included in the credit facility are a $90.0 million swingline subfacility, a $10.0 million letter of credit subfacility and a $75.0 million multicurrency borrowing sublimit. The credit agreement matures on July 1, 2019.

Borrowings under the credit facility bear interest at either LIBOR-based rates plus a spread, which ranges from 87.5 to 250.0 basis-points (LIBOR plus 87.5 basis-points at December 31, 2017), depending on our ratio of total debt to EBITDA, or on rates based on the higher of the Prime rate or the Federal Funds Rate, in each case plus a spread which ranges from 0 to 150.0 basis-points (0 basis-points at December 31, 2017), depending on our ratio of total debt to EBITDA. We pay a variable commitment fee on the unused portion of the commitment under the revolving credit agreement, ranging from 12.5 to 35.0 basis-points (12.5 basis-points at December 31, 2017).

At December 31, 2017 and 2016, $21.8 million and $235.3 million were outstanding under the revolving credit agreement, respectively. The revolving credit agreement contains customary affirmative and negative covenants, including financial covenants with respect to consolidated leverage and interest coverage ratios, and other customary restrictions. We believe we were in compliance with all covenants at December 31, 2017.

Contractual Obligations

As of December 31, 2017, our significant contractual obligations were as follows (in millions):

We have not included in the contractual obligations table above approximately $3.5 million of net liabilities for unrecognized tax benefits relating to various tax positions we have taken, the timing of which is uncertain.

Commercial obligations outstanding at December 31, 2017 under our revolving credit agreement consisted of borrowings totaling $21.8 million with revolving maturities of seven days.

Off-Balance Sheet Arrangements

Refer to Note 13 to our audited consolidated financial statements, under the caption “Off-Balance Sheet Financial Instruments,” for a discussion of standby letters of credit and performance bonds for which we were contingently liable under at December 31, 2017. Such discussion is incorporated herein by reference.

Purchase of Additional Ownership Interest in Joint Venture

On February 13, 2017, we purchased an additional 10% ownership interest in Carrier Enterprise II for cash consideration of $42.7 million, which increased our controlling interest in Carrier Enterprise II to 80%. We used borrowings under our revolving credit agreement to finance this acquisition, which we subsequently repaid using a portion of the proceeds from the ATM program.

Investment in Unconsolidated Entity

On June 21, 2017, Carrier Enterprise I acquired an approximately 35% ownership interest in RSI, an HVAC distributor operating from 30 locations in the Western U.S. for cash consideration of $63.6 million, of which we contributed $50.9 million, and Carrier contributed $12.7 million. Carrier Enterprise I entered into a shareholders agreement (the “Shareholders Agreement”) with RSI and its shareholders. Pursuant to the Shareholders Agreement, RSI’s shareholders have the right to sell, and Carrier Enterprise I has the obligation to purchase, their respective shares of RSI for a purchase price determined based on either book value or a multiple of EBIT, the latter of which Carrier Enterprise I used to calculate the price paid for its investment in RSI. RSI’s shareholders may transfer their respective shares of RSI common stock only to members of the Sigler family or to Carrier Enterprise I, and, at any time from and after the date on which Carrier Enterprise I owns 85% or more of RSI’s outstanding common stock, it has the right, but not the obligation, to purchase from RSI’s shareholders the remaining outstanding shares of RSI common stock. We believe that our operating cash flows, cash on hand, and funds available for borrowing under our revolving credit agreement will be sufficient to purchase any additional ownership interests in RSI.

Acquisitions

We continually evaluate potential acquisitions, including joint ventures and investments in unconsolidated entities, and routinely hold discussions with a number of acquisition candidates. Should suitable acquisition opportunities arise that would require additional financing, we believe our financial position and earnings history provide a sufficient basis for us to either obtain additional debt financing at competitive rates and on reasonable terms or raise capital through the issuance of equity securities.

Common Stock Dividends

We paid cash dividends of $4.60, $3.60 and $2.80 per share of Common stock and Class B common stock in 2017, 2016 and 2015, respectively. On January 2, 2018, our Board of Directors declared a regular quarterly cash dividend of $1.25 per share of Common and Class B common stock that was paid on January 31, 2018 to shareholders of record as of January 16, 2018. On February 6, 2018, our Board of Directors approved an increase to the quarterly cash dividend per share of Common and Class B common stock to $1.45 per share from $1.25 per share, beginning with the dividend that will be paid in April 2018. Future dividends and/or changes in dividend rates are at the sole discretion of the Board of Directors and depend upon factors including, but not limited to, cash flow generated by operations, profitability, financial condition, cash requirements, and future prospects.

Company Share Repurchase Program

In September 1999, our Board of Directors authorized the repurchase, at management’s discretion, of up to 7,500,000 shares of common stock in the open market or via private transactions. Shares repurchased under the program are accounted for using the cost method and result in a reduction of shareholders’ equity. No shares were repurchased during 2017, 2016 or 2015. In aggregate, 6,370,913 shares of Common and Class B common stock have been repurchased at a cost of $114.4 million since the inception of the program. At December 31, 2017, there were 1,129,087 shares remaining authorized for repurchase under the program.

Quantitative and Qualitative Disclosures about Market Risk

We are exposed to market risks, including fluctuations in foreign currency exchange rates and interest rates. To manage certain of these exposures, we use derivative instruments, including forward and option contracts and swaps. We use derivative instruments as risk management tools and not for trading purposes.

Foreign Currency Exposure

We are exposed to cash flow and earnings fluctuations resulting from currency exchange rate variations. These exposures are transactional and translational in nature. The foreign currency exchange rates to which we are exposed are the Canadian dollar and Mexican peso. Revenues in these markets accounted for 6% and 4%, respectively, of our total revenues for 2017.

Our transactional exposure primarily relates to purchases by our Canadian operations in currencies other than their local currency. To mitigate the impact of currency exchange rate movements on these purchases, we use foreign currency forward contracts. By entering into these foreign currency forward contracts, we lock in exchange rates that would otherwise cause losses should the U.S. dollar strengthen and gains should the U.S. dollar weaken, in each case against the Canadian dollar. The total notional value of our foreign exchange contracts as of December 31, 2017 was $40.7 million, and such contracts have varying terms expiring through September 2018. For the year ended December 31, 2017, foreign currency transaction gains and losses did not have a material impact on our results of operations.

We have exposure related to the translation of financial statements of our Canadian operations into U.S. dollars, our functional currency. We do not currently hold any derivative contracts that hedge our foreign currency translational exposure. A 10% change in the Canadian dollar would have had an estimated $1.7 million impact to net income for the year ended December 31, 2017.

Historically, fluctuations in these exchange rates have not materially impacted our results of operations. Our exposure to currency rate fluctuations could be material in the future if these fluctuations become significant or if our Canadian and Mexican markets grow and represent a larger percentage of our total revenues.

See Note 14 to our audited consolidated financial statements included in this Annual Report on Form 10-K for further information on our derivative instruments.

Interest Rate Exposure

Our revolving credit facility exposes us to interest rate risk because borrowings thereunder accrue interest at one or more variable interest rates. Our interest rate risk management objectives are to limit the impact of interest rate changes on earnings and cash flows and to lower overall borrowing costs. To achieve these objectives, we have historically entered into interest rate swap agreements with financial institutions that have investment grade credit ratings, thereby minimizing credit risk associated with these instruments. We do not currently hold any such swap agreements or any other derivative contracts that hedge our interest rate exposure, but we may enter into such instruments in the future.

We have evaluated our exposure to interest rates based on the amount of variable debt outstanding under our revolving credit agreement at December 31, 2017 and determined that a 100 basis-point change in interest rates would result in an impact to income before taxes of approximately $0.2 million. See Note 6 to our audited consolidated financial statements included in this Annual Report on Form 10-K for further information about our debt.

MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f). Our internal control system was designed to provide reasonable assurance to our management and Board of Directors regarding the reliability of financial reporting and the preparation and fair presentation of our published consolidated financial statements.

All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective may not prevent or detect misstatements and can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision and with the participation of our management, including our Chief Executive Officer, Senior Vice President and Chief Financial Officer, we conducted an assessment of the effectiveness of our internal control over financial reporting as of December 31, 2017. The assessment was based on criteria established in the framework Internal Control — Integrated Framework (2013), issued by the Committee of Sponsoring Organizations (“COSO”) of the Treadway Commission. Based on this assessment under the COSO framework, our management concluded that our internal control over financial reporting was effective as of December 31, 2017. The effectiveness of our internal control over financial reporting as of December 31, 2017 has been audited by KPMG LLP, an independent registered public accounting firm, as stated in their report that is included herein.

Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors

Watsco, Inc.:

Opinion on Internal Control Over Financial Reporting

We have audited Watsco, Inc. and subsidiaries’ (the “Company”) internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated balance sheets of the Company as of December 31, 2017 and 2016, the related consolidated statements of income, comprehensive income, shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2017, and the related notes (collectively, the consolidated financial statements), and our report dated March 1, 2018 expressed an unqualified opinion on those consolidated financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Miami, Florida

March 1, 2018

Certified Public Accountants

Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors

Watsco, Inc.:

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of Watsco, Inc. and subsidiaries (the “Company”) as of December 31, 2017 and 2016, the related consolidated statements of income, comprehensive income, shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2017, and the related notes (collectively, the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2017 and 2016, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2017, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company’s internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated March 1, 2018 expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

We have served as the Company’s auditor since 2009.

Miami, Florida

March 1, 2018

Certified Public Accountants

WATSCO, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

See accompanying notes to consolidated financial statements.

WATSCO, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

See accompanying notes to consolidated financial statements.

WATSCO, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

See accompanying notes to consolidated financial statements.

WATSCO, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY