Comfort Systems USA is a leading building and service provider for mechanical, electrical and plumbing building systems. In June 1997, the company went public with 12 operating companies. Today, we are composed of more than 45 operating companies in over 170 locations across the United States. Our tremendous growth has been accomplished by successfully expanding services to existing customers and attracting high quality operations to our network of companies. Our national footprint provides us the ability to meet the needs of today’s most technically complex systems. Comfort Systems USA’s companies deliver expert resources necessary to perform a range of services including mechanical, electrical, process piping, modular construction and building automation controls.