Harris

Harris is a national mechanical contractor with more than 75 years of experience, and its regional office in Upper Marlboro serves the Mid-Atlantic. The work is commercial and institutional: design and engineering, construction, building automation, HVAC and plumbing installations, process piping, sheet metal fabrication, conveyors and end-to-end building systems. Markets include data centers, government and religious facilities and communications. Service offerings include HVAC and plumbing service, energy management, central plant services, preventive maintenance programs and emergency service. This is a large commercial firm rather than a home comfort shop. Rated 3.6 from 8 Google reviews, five of them five stars. Building automation work includes HVAC and lighting controls and security systems, and projects range from stadiums and data centers to medical centers. Online estimates are offered.