Comfort Systems USA, Inc. provides mechanical and electrical installation, renovation, maintenance, repair, and replacement services for the mechanical and electrical services industry in the United States. It is involved in the design, engineering, integration, installation, and start-up of mechanical, electrical, and plumbing (MEP) systems; and maintenance, repair, replacement, renovation, expansion, reconfiguration, and monitoring of mechanical systems, including heating, ventilation, and air conditioning (HVAC) systems, as well as plumbing, piping and controls, off-site construction, electrical, monitoring, and fire protection. The company provides its services for office buildings, retail centers, apartment complexes, and manufacturing plants; and healthcare, education, and government facilities. It serves building owners and developers, general contractors, architects, consulting engineers, and property managers in the commercial, industrial, and institutional MEP markets. Comfort Systems USA, Inc. was founded in 1917 and is headquartered in Houston, Texas.