Hess Mechanical Corporation is a full service, merit-shop mechanical contractor licensed in Maryland, Virginia and the District of Columbia, and has been providing innovative mechanical solutions since 1980.
With a current workforce of approximately 200 full time field employees, a full time CHST and dedicated safety program as well as highly qualified superintendents, foremen, mechanics and project managers, Hess Mechanical is able to self-perform all plumbing, HVAC and sheet metal work.
Hess Mechanical’s reputation is built on professionalism, technical expertise and a team approach to the requirements of each project. Since our work is performed in-house, from coordination of drawings and prefabrication of pipe and duct systems, to onsite preparation and installation, Hess Mechanical exercises a high degree of control over a project’s quality, safety and scheduling. Extensive pre-planning, thorough understanding of project scope requirements and professional supervision eliminate delays, reduce hazards and maintain construction within budget.

In April 1998, Hess Mechanical became a subsidiary of Comfort Systems USA, the nation’s premier provider of commercial and industrial HVAC solutions. Our technical experts design, install and maintain plumbing and HVAC systems for office buildings, hospitals, universities, laboratories, government installations and hotels. As a result of this merger, Hess Mechanical has nearly unlimited bonding capabilities as well as the ability to partner with sister companies (such as Riddleberger Brothers and Colonial Webb in Virginia) to increase its work force and fabrication as needed. Our depth and strength as an award winning national publicly traded mechanical construction concern gives added value and peace of mind to our customers.