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House with Tree

HVAC in Fairfax VA

Serving Homes Throughout Northern Virginia

Need HVAC in Fairfax? Give the Air Treatment Company a call! We're equipped to handle it all, big or small. For over half a century, our highly trained and skilled technicians have delivered premier heating, cooling, duct cleaning, and indoor air quality services to residences in Fairfax and throughout Northern Virginia.

It is our mission to make your household a more comfortable and safer environment, so that when you get home at night, you'll be able to kick back and relax without having to worry about it being too hot or too cold. That's just the Air Treatment Company way!

We take pride in the reputation that we have built over the years and are considered to be a top-rated company in our industry. Our dedication is to providing fast and friendly HVAC service, as well as getting the job done right the first time. You can count on us to arrive on-time, and in time, to service your needs.

Experienced HVAC Services in Fairfax

At Air Treatment Company, we respond to all service calls in a prompt and courteous manner. When we arrive at your home, we come with the intention of leaving it in even better shape than when we came.

Before any work has been started, we'll thoroughly assess the issues at hand and provide you with solutions best tailored to your needs.

We also offer upfront quotes so that you'll know what we're paying for prior to fulfilling your Fairfax HVAC service call. Your satisfaction is our guarantee!

100% Satisfaction Guaranteed

Providing Top-Quality Heating, Cooling, and Indoor Air Quality Services Since 1958

Why Choose
Air Treatment Company?

  • Affordable Coupons & Specials Available.
  • Superior Workmanship at Competitive Rates.
  • We Provide Free Estimates for New Equipment.
  • NATE Certified & Extensively Experienced Techs.
  • Customer Comfort & Satisfaction are Prioritized.
  • Carrier 2018 President's Award
  • Carrier 2013 President's Award
  • Angie's List
  • Quality One
  • Tysons
  • BBB Accredited
  • NCI
  • RSES
  • NFPA

Hear from Our
Happy customers

  • Absolutely top notch service provider.

    “These people are very professional and gave me the confidence to go with Carrier HVAC systems which I have been very happy about since the installation.”

    Adrian L.

  • Mike was available on the same day and quickly resolved the situation.

    “He was very knowledgeable and was able to explain the situation to us clearly.”

    Stephen B.

  • Provides quick and expert service, and is timely.

    “Air Treatment Company always treats me very professionally.”

    Connie K.

  • Have always been pleased with the level of service, professionalism, technical knowledge and friendliness displayed by the service personnel.

    “The office staff is very pleasant and easy to work with when scheduling service.”


  • Explained everything and got the work done quickly.

    “Excellent service, as always, from Air Treatment.”

    Richard B.

Our Location

Proudly Serving Fairfax County & Surrounding Areas


518 Mill Street NE
Vienna, VA 22180
Map & Directions [+]

Request Service Emergency Services Available

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Ceiling Lamp Top Notch Service Everytime

Choose Air Treatment Company for your heating, cooling, duct cleaning, and indoor air quality needs today! We're dedicated to servicing all your indoor comfort needs. We'll have your home feeling right every time you walk through the door.

Get Comfortable