Award Winning Mechanical Contractor

RM Thornton Mechanical has built a reputation in the Washington metropolitan region 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, and have helped build many national landmarks in the Washington, D.C. area.

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