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COMFORT SYSTEMS USA INC

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Business Summary

Comfort Systems USA, Inc. operates in the mechanical and electrical contracting services industry within the United States, providing heating, ventilation and air conditioning (HVAC), plumbing, piping, controls, off-site construction, monitoring, fire protection, and electrical system installation and servicing. The company estimates that the commercial, industrial, and institutional mechanical and electrical contracting market generates annual revenue of approximately $700 billion . The industry is shaped by factors including population growth, an aging installed base of buildings and equipment, increasing system complexity, and a growing emphasis on internal air quality, environmental sustainability, and energy efficiency. The industry is broadly divided into construction and installation in new buildings, which provided approximately 63.2% of the company's 2025 revenue, and renovation, expansion, maintenance, repair and replacement in existing buildings, which provided the remaining 36.8% of 2025 revenue.

The mechanical and electrical contracting industries are highly competitive and consist of thousands of local and regional companies. The company believes it is larger than most of its competitors, which are generally small, owner-operated companies in a specific area, though there are divisions of larger contracting companies, utilities, and MEP equipment manufacturers that provide services in some of the same service lines and geographic areas. Competitive advantages include the ability to provide multi-location coverage and a broad range of services, a focus on the consultative 'design and build' installation market and the maintenance, repair, and replacement market, and the relative size and strength of its balance sheet and surety relationships compared to most companies in its industry. The company's top customer represented 12.8% of consolidated 2025 revenue.

The company generates revenue by providing mechanical and electrical contracting services, including installation, renovation, expansion, maintenance, repair, and replacement of MEP systems. Approximately 92.7% of revenue is earned on a project basis for installation of systems in newly constructed or existing facilities, while approximately 7.3% of revenue represents maintenance and repair service on already installed HVAC, electrical, and controls systems. Revenue is recognized over time using the cost-to-cost input method of accounting. The primary customer segments are commercial, industrial, and institutional markets, with work performed in manufacturing, healthcare, education, office, technology, retail, and government facilities.

The company operates in two business segments: mechanical and electrical. The mechanical segment principally includes HVAC, plumbing, piping and controls, as well as off-site construction, monitoring and fire protection. For the year ended December 31, 2025, the mechanical segment generated revenue of $6,673,745,000 , representing 73.3% of total revenue. The electrical segment includes installation and servicing of electrical systems, generating revenue of $2,427,896,000 in 2025, representing 26.7% of total revenue. The company's 2025 revenue by end-use sector was Technology at 45.0% , Manufacturing at 22.1% , Healthcare at 8.9% , Education at 7.3% , Government at 5.0% , Office Buildings at 5.0% , Retail, Restaurants and Entertainment at 3.7% , Multi-Family and Residential at 1.4% , and Other at 1.6% .

The company's services are further broken down by activity type. New Construction contributed $5,752,786,000 or 63.2% of 2025 revenue. Existing Building Construction contributed $2,118,363,000 or 23.3% . Service Projects contributed $568,845,000 or 6.2% . Service Calls, Maintenance and Monitoring contributed $661,647,000 or 7.3% of 2025 revenue.

During 2025, the company completed several acquisitions. In the first quarter, it acquired Century Contractors, LLC for a total purchase price of $84.2 million . In the second quarter, it acquired Right Way Plumbing & Mechanical LLC for a total preliminary purchase price of $64.9 million and a mechanical service provider in New York for a total preliminary purchase price of $2.8 million . In the fourth quarter, it acquired Feyen-Zylstra Holdings, LLC for a total preliminary purchase price of $109.8 million and Meisner Electric, Inc. for a total preliminary purchase price of $74.9 million . The company also amended its senior credit facility on August 27, 2025, increasing borrowing capacity from $850.0 million to $1.10 billion . During the year ended December 31, 2025, the company repurchased 0.4 million shares for approximately $217.9 million , inclusive of the applicable excise tax, at an average price of $489.40 per share. The Board approved an extension to the stock repurchase program on May 16, 2025, increasing the shares authorized for repurchase by 0.4 million shares.

Total revenue for fiscal year 2025 was $9,101,641,000 , an increase of 29.5% compared to $7,027,476,000 in 2024. Net income was $1,022,558,000 in 2025, compared to $522,433,000 in 2024. Diluted earnings per share were $28.88 in 2025 versus $14.60 in the prior year. Gross profit increased 48.7% to $2,195,899,000 in 2025, with gross margin expanding from 21.0% in 2024 to 24.1% in 2025. Operating income was $1,314,589,000 in 2025, representing 14.4% of revenue, compared to $749,369,000 or 10.7% in 2024. Net cash provided by operating activities was $1,186,356,000 in 2025, and free cash flow was $1,035,148,000 .

Business Outlook

A primary growth vector is the technology sector, particularly data centers. The company experienced an unprecedented overall demand environment in 2025, with demand especially strong in the technology sector. Same-store revenue growth was largely driven by strong market conditions, including an increase in backlog. The company's backlog as of December 31, 2025 was $11.94 billion , a 99.3% increase from December 31, 2024 backlog of $5.99 billion . The year-over-year backlog increase included a same-store increase of $5.59 billion , or 93.2% , primarily due to increased project bookings and strong market conditions in the technology sector at several operations, including the Texas modular operation ($1.48 billion ), one North Carolina operation ($1.26 billion ), one Indiana operation ($901.1 million ), one Texas operation ($850.2 million ), and the Texas electrical operation ($803.4 million ). The company currently expects that the demand environment, especially for manufacturing and technology customers, will remain at high levels during 2026.

Another growth vector is the company's acquisition strategy. The company believes it can further increase cash flow and operating income by continuing to opportunistically enter new markets or service lines through acquisition. It has dedicated a significant portion of its cash flow on an ongoing basis to seeking opportunities to acquire businesses with strong assembled workforces, excellent historical safety performance, leading design and energy efficiency capabilities, attractive market positions, a record of consistent positive cash flow, and desirable market locations. The company also plans to continue to improve its capability in mechanical off-site or modular construction through development and acquisitions. Additionally, the company has made substantial investments to expand its service and maintenance revenue through its Service Growth Initiative, actively concentrating managerial and sales resources on training and hiring experienced employees to sell and profitably perform service work.

The company's gross profit margin improved significantly, from 21.0% in 2024 to 24.1% in 2025, driven by higher revenues and improved execution in operations. Selling, general and administrative expenses (SG&A) as a percentage of revenue decreased from 10.4% in 2024 to 9.7% in 2025 due to leverage resulting from the increase in revenue. The company anticipates that cost pressures and intermittent delays in its supply chain will persist over the next several quarters. It is recognizing these challenges in job planning and pricing, ordering materials on an earlier timeline, and seeking to collaborate with customers to share supply risks.

The company has experienced increases in labor costs and delays in delivery of certain materials and equipment and anticipates that cost pressures and intermittent delays in its supply chain will persist over the next several quarters. The company is recognizing these challenges in its job planning and pricing, and it is ordering materials on an earlier timeline and seeking to collaborate with customers to share supply risks and to mitigate the effects of these challenges. The company has been generally successful in maintaining productivity and in procuring needed materials despite ongoing challenges. The company has a credit facility in place that does not expire until October 2030, and as of December 31, 2025, it had $921.0 million of credit available to borrow under the facility.

Capital expenditures for property and equipment were $154,903,000 in 2025, compared to $111,071,000 in 2024. The company repurchased 0.4 million shares for approximately $217.9 million during 2025. As of December 31, 2025, the company had repurchased a cumulative total of 10.9 million shares at an average price of $50.15 per share under the repurchase program, with 879,310 shares remaining authorized for repurchase. The company paid dividends of $68,833,000 in 2025, or $1.95 per share, compared to $42,766,000 or $1.20 per share in 2024. The company expects to continue paying cash dividends quarterly, although there is no assurance as to future dividends.

The company faces headwinds from rising inflation, interest rate volatility, and the potential for an economic recession or downturn. These conditions have increased costs for labor, materials, utilities, and other goods and services. The company has exposure to changes in interest rates under its revolving credit facility, and as interest rates increase, debt service obligations on variable rate indebtedness will increase. The company also faces labor shortages, which may lead to higher wages and higher costs to purchase the services of third parties. The company notes that the lasting effects of a recession can increase economic instability with vendors, subcontractors, developers, and general contractors, which can increase liability exposure and result in not being paid in full or at all on some projects.

The company identifies several execution risks to its growth plan. These include the risk that its estimates and assumptions for project costs prove inaccurate, leading to cost overruns and reduced profits or losses on fixed-price contracts. The company also faces risks related to its backlog, which is subject to unexpected adjustments and cancellations, meaning amounts in backlog may not result in actual revenue or translate into profits. The loss of one or a few significant customers could adversely affect the business, as one customer represented 12.8% of consolidated 2025 revenue. The company also faces intense competition in its industry, which could reduce market share and profit. Additionally, the company's recent and future acquisitions may not be successful, and it may encounter difficulties integrating acquired businesses.

Risk Factors

The company's business is highly dependent on levels of construction activity, making it vulnerable to macroeconomic downturns that are cyclical in nature, which can lead to greater price competition and decreased revenue and profit. The company bears the risk of cost overruns in most of its fixed-price contracts, and if estimates or assumptions prove inaccurate, cost overruns could occur, leading to reduced profits or losses. The company's backlog of $11.94 billion is subject to unexpected adjustments and cancellations, and there is no guarantee that the revenue projected from backlog will be realized or profitable. The loss of one or a few significant customers could adversely affect the business, as one customer represented 12.8% of consolidated 2025 revenue and 10.2% of total receivables as of December 31, 2025. The company faces intense competition in a highly fragmented industry, where price is often the principal factor in selecting a contractor, which could reduce market share and profit.

Management Priorities

Management's tone in the filing is confident and forward-looking, emphasizing the company's strong performance and strategic positioning. Key themes include achieving excellence in core competencies, attracting and retaining employees, achieving operating efficiencies, and leveraging resources. Management states that the company experienced an unprecedented demand environment in 2025 and currently expects that the demand environment, especially for manufacturing and technology customers, will remain at high levels during 2026. Management also notes that although preparing for a wide range of future challenges and economic circumstances, including a potential recession, it currently expects that supportive conditions for the industry, especially for industrial and technology customers, are likely to continue in 2026. The strategic priorities emphasized for the period ahead include focusing on strengthening core operating competencies, leading in sustainability, efficiency, and technological improvement, and being fairly compensated for work and risk. The company's core purpose is to 'Build Legacies' with its people, customers, and the companies who join it.

View Source Annual Report on SEC.gov ↗

References

  1. [1] Item 1, Business — Industry Overview
  2. [2] Item 1, Business — Industry Overview
  3. [3] Item 1, Business — Industry Overview
  4. [4] Item 1A, Risk Factors — Risks Related to Our Business
  5. [5] Item 7, MD&A — Nature and Economics of Our Business
  6. [6] Item 7, MD&A — Nature and Economics of Our Business
  7. [7] Item 7, MD&A — Results of Operations
  8. [8] Item 7, MD&A — Results of Operations
  9. [9] Item 7, MD&A — Results of Operations
  10. [10] Item 7, MD&A — Results of Operations
  11. [11] Item 1, Business — Strategy
  12. [12] Item 1, Business — Strategy
  13. [13] Item 1, Business — Strategy
  14. [14] Item 1, Business — Strategy
  15. [15] Item 1, Business — Strategy
  16. [16] Item 1, Business — Strategy
  17. [17] Item 1, Business — Strategy
  18. [18] Item 1, Business — Strategy
  19. [19] Item 1, Business — Strategy
  20. [20] Item 8, Note 3 — Revenue from Contracts with Customers
  21. [21] Item 8, Note 3 — Revenue from Contracts with Customers
  22. [22] Item 8, Note 3 — Revenue from Contracts with Customers
  23. [23] Item 8, Note 3 — Revenue from Contracts with Customers
  24. [24] Item 8, Note 3 — Revenue from Contracts with Customers
  25. [25] Item 8, Note 3 — Revenue from Contracts with Customers
  26. [26] Item 8, Note 3 — Revenue from Contracts with Customers
  27. [27] Item 8, Note 3 — Revenue from Contracts with Customers
  28. [28] Item 8, Note 5 — Acquisitions
  29. [29] Item 8, Note 5 — Acquisitions
  30. [30] Item 8, Note 5 — Acquisitions
  31. [31] Item 8, Note 5 — Acquisitions
  32. [32] Item 8, Note 5 — Acquisitions
  33. [33] Item 7, MD&A — Liquidity and Capital Resources
  34. [34] Item 7, MD&A — Liquidity and Capital Resources
  35. [35] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  36. [36] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  37. [37] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  38. [38] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  39. [39] Item 8, Consolidated Statements of Operations
  40. [40] Item 7, MD&A — Results of Operations
  41. [41] Item 8, Consolidated Statements of Operations
  42. [42] Item 8, Consolidated Statements of Operations
  43. [43] Item 8, Consolidated Statements of Operations
  44. [44] Item 8, Consolidated Statements of Operations
  45. [45] Item 8, Consolidated Statements of Operations
  46. [46] Item 7, MD&A — Results of Operations
  47. [47] Item 8, Consolidated Statements of Operations
  48. [48] Item 7, MD&A — Results of Operations
  49. [49] Item 7, MD&A — Results of Operations
  50. [50] Item 8, Consolidated Statements of Operations
  51. [51] Item 7, MD&A — Results of Operations
  52. [52] Item 8, Consolidated Statements of Operations
  53. [53] Item 7, MD&A — Results of Operations
  54. [54] Item 7, MD&A — Liquidity and Capital Resources
  55. [55] Item 7, MD&A — Liquidity and Capital Resources
  56. [56] Item 7, MD&A — Results of Operations
  57. [57] Item 7, MD&A — Results of Operations
  58. [58] Item 7, MD&A — Results of Operations
  59. [59] Item 7, MD&A — Results of Operations
  60. [60] Item 7, MD&A — Results of Operations
  61. [61] Item 7, MD&A — Results of Operations
  62. [62] Item 7, MD&A — Results of Operations
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  64. [64] Item 7, MD&A — Results of Operations
  65. [65] Item 7, MD&A — Results of Operations
  66. [66] Item 7, MD&A — Results of Operations
  67. [67] Item 7, MD&A — Results of Operations
  68. [68] Item 7, MD&A — Results of Operations
  69. [69] Item 7, MD&A — Results of Operations
  70. [70] Item 7, MD&A — Liquidity and Capital Resources
  71. [71] Item 7, MD&A — Liquidity and Capital Resources
  72. [72] Item 7, MD&A — Liquidity and Capital Resources
  73. [73] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  74. [74] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  75. [75] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  76. [76] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  77. [77] Item 5, Market for Registrant's Common Equity — Issuer Purchases of Equity Securities
  78. [78] Item 8, Consolidated Statements of Stockholders' Equity
  79. [79] Item 8, Consolidated Statements of Stockholders' Equity
  80. [80] Item 8, Consolidated Statements of Stockholders' Equity
  81. [81] Item 8, Consolidated Statements of Stockholders' Equity
  82. [82] Item 1A, Risk Factors — Risks Related to Our Business
  83. [83] Item 7, MD&A — Results of Operations
  84. [84] Item 1A, Risk Factors — Risks Related to Our Business
  85. [85] Item 8, Note 2 — Summary of Significant Accounting Policies and Estimates
  86. [86] Item 8, Consolidated Statements of Operations
  87. [87] Item 8, Consolidated Statements of Operations
  88. [88] Item 8, Consolidated Statements of Operations
  89. [89] Item 8, Consolidated Statements of Operations
  90. [90] Item 8, Consolidated Statements of Operations
  91. [91] Item 8, Consolidated Statements of Operations
  92. [92] Item 8, Consolidated Statements of Operations
  93. [93] Item 8, Consolidated Statements of Operations
  94. [94] Item 7, MD&A — Results of Operations
  95. [95] Item 7, MD&A — Results of Operations
  96. [96] Item 7, MD&A — Liquidity and Capital Resources
  97. [97] Item 7, MD&A — Liquidity and Capital Resources
  98. [98] Item 8, Consolidated Balance Sheets
  99. [99] Item 8, Consolidated Balance Sheets
  100. [100] Item 8, Consolidated Balance Sheets
  101. [101] Item 8, Consolidated Balance Sheets
  102. [102] Item 8, Consolidated Statements of Operations
  103. [103] Item 7, MD&A — Results of Operations
  104. [104] Item 8, Consolidated Statements of Operations
  105. [105] Item 7, MD&A — Results of Operations
  106. [106] Item 7, MD&A — Results of Operations
  107. [107] Item 7, MD&A — Results of Operations

Analysis on 6/8/2026