Award Winning Mechanical Contractor

RM Thornton Mechanical has built a reputation in the Washington metro area for the uncompromising quality of its full-service mechanical work. Its dedicated and highly skilled team of plumbers, steamfitters, sheet metal workers, and HVAC service technicians have been recognized by the Washington Building Congress with fourteen Individual & Team Craftsmanship and Star Awards. These talented professionals have built the heating, cooling, ventilation and plumbing systems at many national landmarks in the Washington, D.C. area.

As a division of Harris Companies, RM Thornton is able to draw on the company’s financial strength as well as the resources and expertise of its offices located across the United States.