Trust your HVAC & Plumbing needs to the experts!

For more than 125 years, we have been bringing timely solutions on our customers’ timetable and budget. Contact us today to learn more about how we can save you money, extend the life of your equipment, and prevent surprise capital costs.

a mechanical contractor with history

Our purpose

W. L. Gary Company’s purpose is to enrich the lives of others by providing solutions to our clients, opportunity to our partners, and support to our community.

How We Work

Find A Way

Our team takes on the challenge of finding a way to tackle our clients needs to provide them with their needed solution.

Do the right thing

Our team does the right thing, not because it is easy or cheap, but because it is simply the right thing to do. Our pledge is that we'll make it right by standing behind our work.

family owned and operated for over 125 years

More than 125 years of doing right by our clients and finding a way to provide the needed solution has earned us a reputation within our community. While some of our leadership team are decedents of Walker Littlebury Gary, it is our larger W. L. Gary Family, all of our employees and partners, that make this company who and what it is.

Licensed to work in DC, Maryland, and Virginia
  • Certified Business Enterprise in DC.
  • Licensed Journeymen and women and Master Mechanics
  • Certified in a wide array of plumbing and HVAC specialties.
We enjoy working with clients who balance experience with cost and focus on the best value. 
Who we WORK BEST WITH

We like to build long term relationships with clients who appreciate dedication and live shared core values.  We excel when we can help drive the job, including helping to create the scope.

Our clients can expect to experience The GARY Way every time they work with us, whether it is a service call or a large construction project.

OUR CORE VALUES

They guide our every action at W. L. Gary. We live and work by these guiding principles.

Do the right thing

Help first

Deliver unequivocal
excellence

ALWAYS PURSUE BETTER

cOMMUNICATE oPENLY

Our rich 125-year history defines our legacy

Longevity is no accident

our associations