W. L. Gary Company, Inc.



Proud to be a MSCA GreenSTAR, W. L. Gary Company, Inc. is a full service mechanical contractor providing solutions to the DC metropolitan area for over 100 years. As a family owned and family operated business, our mission is to provide solutions for our customers, opportunity for our partners, and support for our community. As a company, W. L. Gary can partner with a client for the entire lifecycle of their building. From concept through construction and commissioning, our Construction Department will assist you in bringing your project to life. Then our Service Department continues to support you with a customized maintenance or energy services agreement to maintain your building and keep it running at peak efficiency. And down the road, when the time comes for a retrofit or renovation, we are with you to start the process over, continuing your building’s lifecycle. During every point in the lifecycle of your building, W. L. Gary Company is focused on saving energy. We can provide an assessment of your building to determine your ENergy STAR rating and help you increase that rating. Through continued tracking of your energy consumption, we can help you identify which strategies are improving your energy efficiency and which are not. We can further help you evaluate if and when a retrofit, upgrade, or replacement is right for your system and help you to execute the plan to ultimately save you money. In addition, W. L. Gary’s service department provides a wide array of plumbing, heating, and air conditioning services to assist you in making sure your building is providing the proper environment for you and your family or customers. Our skilled service technicians and solutions consultants are able to diagnose problems in your plumbing or HVACR systems and to implement the best solution. We offer customized preventative maintenance packages that are tailored to your specific equipment and needs to help keep your mechanical equipment running at peak efficiency. Some of our top services include: boiler work (steam and hot water), chiller work, backflow certification, hydro-jetting, grease trap and ejector pit pumping and cleaning, video inspection of pipes, installation and maintenance of variable refrigerant volume (VRV) and variable refrigerant flow (VRF) systems, medical gas, water audits


Air Conditioning, Heating, Plumbing, Low-Temp Refrigeration, Residential, Energy Savings Solutions, Commissioning/Retro-commissioning, Data Center AC Service, Design and Installation, Chiller Replacement and Repair, Boiler Service and Replacement

States Served:

District of Columbia, Maryland, Virginia


Contact Name:

Randy Greer

Contact Title:

Executive Vice President

Contact E-mail:



225 Vine Street, NW United States
Washington, DC 20012