Comfort Systems USA, Inc.

Comfort Systems USA, Inc. is a leading American provider of mechanical and electrical contracting services, primarily focusing on heating, ventilation, and air conditioning (HVAC), plumbing, piping, and controls. The company's mission is to consistently deliver high-value HVAC and mechanical systems installation and service, particularly within the mid-market commercial, industrial, and institutional sectors, while prioritizing customer and employee well-being and environmental responsibility. Headquartered in Houston, Texas, the company's core purpose is to "Build Legacies" with its people, customers, and partner companies.

The company's comprehensive service offerings include the installation, renovation, maintenance, repair, and replacement of mechanical and electrical systems. These services encompass HVAC, plumbing, electrical, process piping, modular construction, building automation controls, monitoring, and fire protection. Comfort Systems USA serves a diverse range of commercial, industrial, and institutional clients across various sectors, including healthcare, education, government, data centers, and manufacturing. The company operates through two primary segments: Mechanical and Electrical services, with the Mechanical segment generating the majority of its revenue.

Comfort Systems USA maintains a strong market position, recognized as the #1 provider of mechanical and HVAC services in the U.S. It was ranked 520th on the Fortune 500 and 6th by Engineering News-Record on its 2024 list of top 600 specialty contractors. The company is led by CEO Brian E. Lane, with Trent T. McKenna serving as President and Craig Sasser appointed Chief Operating Officer effective July 1, 2026. Comfort Systems USA is experiencing significant growth, driven by secular tailwinds such as the expansion of AI data centers and advanced manufacturing facilities, reporting record revenue growth and a substantial backlog in Q1 2026. Recent activities include leadership transitions, an increase in its quarterly dividend, and the release of its Q1 2026 financial results.