Trusted HVAC Company in Washington, D.C., Since 1891

For over a century, Thomas E Clark Inc has been providing reliable heating and cooling solutions to residents and businesses in Washington, D.C.

Need HVAC Solutions in the DMV Area? Count on Us!

Trust us to keep your home or business comfortable year-round in the DMV area with reliable and efficient solutions.

Serving Maryland, Virginia and Beyond for Over 100 Years

With over a century of experience, we provide clients in Maryland, Virginia, and surrounding areas with exceptional HVAC services.

Let’s Discuss Your HVAC Needs

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    What We Do
    Explore Our HVAC Solutions
    From heating and cooling systems to indoor air quality improvements, we have the right solution for you.
    Plumbing
    Our professional plumbing services cover everything from repairs to installations, ensuring your system operates flawlessly. Trust us to handle all your plumbing needs with precision and care.
    Heating
    Stay warm and cozy with our expert heating services, including furnace installations, repairs and maintenance. We ensure your heating system is efficient and reliable all winter long.
    Air Conditioning
    Beat the heat with our top-tier air conditioning services, from AC installations to regular maintenance. Our team ensures your cooling system operates at peak performance.
    Drain Cleaning
    Our drain cleaning services effectively remove blockages and maintain the health of your plumbing system. Rely on us for fast and thorough drain cleaning solutions.
    Free Lead Water Pipe Replacement
    We offer Free Lead Water Pipe Replacement to ensure safe and efficient water delivery to your home. Our skilled technicians handle the entire process with professionalism and care.
    Client Testimonials
    What Our Satisfied Customers Say About Our Work
    Hear from our satisfied customers about their positive experiences with our HVAC and plumbing services.
    Excellent service. Positive Responsiveness, Punctuality, Quality, Professionalism, Value
    Rozelle G.
    Excellent service!!!
    Tanya K.
    Great service.
    Herbert L.
    Excellent service!
    Gina D.
    Excellent and personable service. Positive Responsiveness, Punctuality, Quality, Professionalism, Value Services Plumbing leak detection
    Jack S.
    Contact Us
    Book an HVAC Service Today

      This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
      I provide my express consent to Thomas E Clark Inc to contact me via Phone, Email and/or SMS. I understand that my consent is not a requirement for purchase, and I may withdraw my consent at any time.
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