Comfort Systems USA | Quality People. Building Solutions.
Comfort Systems USA is a leading national provider of mechanical, electrical, and plumbing (MEP) contracting services. From HVAC installation and service to plumbing, electrical, building automation, and energy solutions, we deliver innovative, reliable, and sustainable systems for commercial, industrial, and institutional clients across the country.
By combining the strength of a national organization with the expertise of local companies, we provide tailored solutions and trusted service in every community we serve. Our people are our greatest strength — dedicated professionals who bring technical skill, safety, and customer commitment to every project.
At Comfort Systems USA, we’re more than contractors — we’re partners in building environments where businesses, institutions, and communities thrive.
Comfort Systems USA — Quality People. Building Solutions.
Family owned for over 50 years, Allied Mechanical Services, Inc. has been helping people with a wide variety of mechanical needs. We're proud to say that we are one of Michigan's largest and most experienced full-service mechanical contracting firms.
Allied Mechanical Services, Inc. specializes in institutional, commercial, and industrial piping, plumbing, HVAC, and custom sheet metal fabrication along with a 24-hour service department. In addition to these services, we also have the following subsidiaries and DBA’s:
Air Components, Inc., provides compressors, blowers, and air tools to manufacturers and contractors plus a 24-hour service department.
ControlNET L.L.C., an independent controls contractor that provides open-protocol, full-service digital building control solutions.
Third Coast Test and Balance, NEBB certified contractor providing specialized and comprehensive testing and balancing of environmental systems.
43Forty Fabrication Services, a customer-centric national fabrication company focused on pipe fabrication and custom metal solutions with design build capabilities.
With offices spread across West Michigan, Allied Mechanical Services is dedicated to its strong, dependable values and its continual expansion of technology.
Legacy is a mechanical services and engineering firm which focuses on the performance of high quality preventive and preductive maintenance programs, as well as heating air conditioning, and energy retrofit projects in larger commercial office buildings, telecommunication facilities, data centers, manufacturing and institutional properties across Northern California.
In addition to our HVAC service operation, we also offer design engineering capability through registered Professional Engineers who manage the installation of mechanical systems and tenant improvement projects. Legacy has been selected as a factory authorized representative of the revolutionary line of Bitzer compressors and has distinguished itself as the leading source of this technology in our marketplace.