Founded more than a century ago, W. L. Gary Company, Inc. is one of the oldest plumbing, heating, and air-conditioning providers in the Washington, DC area. This family owned and family operated business is known for its high quality workmanship and attention to detail in both service and construction projects. The companyÃ¢â‚¬â„¢s mission is to provide solutions for our customers, opportunity for our partners, and support for our community. W. L. Gary Company currently serves over 1500 customers in the Washington, DC Metro Area and employs 150 people from around the region. It has been recognized as a MSCA GreenSTAR Contractor for its work in energy savings and stewardship.