About Us

Thomas. E. Clark, Inc. (or Thos. E. Clark) is the Washington Metropolitan area's oldest Plumbing, Heating & Air Conditioning contractor. We’ve been family owned and operated since 1891.

Our business has been built on the enduring, timeless principles taught by our founder and great grandfather:

“Treat the customer as if he were a friend, and you will gain a friend and a customer for life.”
– 1891 by Thomas E. Clark, founder

It is our mission to provide our customers with the highest quality service and workmanship. So many companies toss the words “high quality service” and “workmanship” out there. Saying is one thing. Delivering is another.

You should know the underlying components of how it’s possible for us to deliver year after year, one client at a time. First, we don’t promise something we can’t deliver. You will always get the real scoop from us.

We take the approach of a great doctor. First, analyze the situation. Ask questions. Find out what’s going on. If the problem can be solved without replacing, we do it.

We always give you the pros and cons. In the end, as the patient, you decide on the prescribed course of action. None of this, “Well, you’re gonna have to buy a new hot water heater,” after walking in your front door.

Second – well, it really does go back to the philosophy our great grandfather followed. If you haven’t already read his six, simple secrets, take a moment now.

We look forward to serving you well.