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About Us

A Leader in HVAC Systems and Solutions for Washington D.C.

Thornton Service is a privately held commercial HVAC services company serving building owners and operators across the greater Washington D.C. metro area and surrounding counties in Virginia and Maryland. Established in 1994, but with roots reaching back to 1982, we have partnered with clients across our nation’s capital to deliver reliable mechanical services and improve efficiencies for over 35 years. As a member of the Service Logic family of companies, we have even an in depth support system and breadth of experience to draw on as we continue to expand services for new and existing clients alike.