Stay Comfortable Year-Round With Trusted Local HVAC Experts
"Brand Story"
Our Awards
  • Air Conditioning Contractors of America
  • NATE
  • ASHRAE
  • NFPA
  • RSES

    Serving Ashburn, Leesburg, Sterling, Aldie, South Riding, Purcellville, Round Hill, Lovettsville, Loudoun County, Hamilton and beyond HVAC Loudoun County

    Keep your heating, ventilation, and air conditioning system in peak condition with Air Treatment Heating & Cooling as your trusted HVAC company. Our approach combines thorough inspections, precise maintenance, and timely repairs to ensure your system runs smoothly all year round. Whether you're battling the summer heat or the winter chill, Air Treatment Heating & Cooling's team is equipped with the latest tools and knowledge to address any issue, big or small. Our HVAC company prioritizes energy efficiency and comfort, aiming to extend the lifespan of your HVAC unit and improve your indoor air quality.

    Choose an HVAC company that guarantees comfort and efficiency. Dial (703) 270-0881 to connect with the experts at Air Treatment Heating & Cooling.

    Loudoun County HVAC Company
    Call for More Information Today!
    703-270-0881
    Feedback from Our Customers
    • R
      "Air Treatment Is the Best"
      They’re honest, fair, and extremely professional.
      Raef H
    • K
      "Great People Who Always Do a Great Job"
      Great people who always do a great job.
      Ken H
    • J
      "Dee is a great technician"
      He can quickly diagnose an issue and get it resolved.
      Janet Reid
    • M
      "Mike was fantastic"
      Mike was fantastic—deeply knowledgeable and a pleasure to work with.
      Masha Hansford
    • J
      "Service technician was courteous"
      Service technician was courteous and thorough.
      Joanne Alger
    • C
      "Air Treatment Was Great!"
      I called with a concern, and they got me an appointment the same day.
      Christan Summers
    • W
      "Great service"
      Looked for ways to save me costs, which was much appreciated.
      William Brenner
    • C
      "Very good, clean work"
      The techs showed up on time with the correct plan in hand and did very good, clean work.
      C W
    • A
      "Very Happy With This Technician"
      Very happy with this technician. He deserves a raise for how hard he worked.
      Andrea Radcliffe
    • R
      "Courteous, Helpful, and Knowledgeable"
      Technician was courteous, helpful, and knowledgeable.
      R Ritter
    • K
      "You Guys and Your Technicians Are Always Great"
      You guys and your technicians are always GREAT.
      Kevin Hulbert
    • C
      "Elmer was a great tech!"
      He showed up on time and had the equipment to fix our system on-hand.
      Colin Anderson
    • k
      "Always Professional"
      They call when they’re on the way and explain what’s going on with your system without pressure.
      kellie lavey
    • S
      "Thorough and Professional"
      As usual, AirTreatment folks showed up when they promised.
      Sara Gann
    • A
      "Phenomenal Service from Air Treatment"
      Phenomenal service from Air Treatment and Cooling! Mike also took extra time to explain how to manage my system better.
      Ajay kandukuri
    • M
      "Outstanding service once again"
      Very appreciative of his service each and every time we specifically request him.
      Margo Zoian
    • J
      "Timely and Thorough Service and Repairs"
      They always provide timely and thorough service and repairs, staff is respectful and knowledgeable, and pricing is fair.
      Jennifer McLaughlin
    • S
      "Courteous, Knowledgeable, and Efficient"
      Will and his team are courteous, knowledgeable, and efficient.
      Steve Kaltenbaugh
    • L
      "The Best Service"
      Very professional and so kind and caring.
      Louise Lighthart
    • P
      "Service Was Excellent"
      The service was excellent.
      Petra Engle
    • M
      "The entire operation is top notch"
      The entire operation at Air Treatment is top notch.
      Mark Stahl
    • F
      "Beyond My Expectation for Excellent Services"
      No hype, no hard sell, but a common-sense approach to identifying our system and its overall needs.
      Frank Biviano
    • K
      "Consistently Great Experience"
      The staff and technicians are always respectful, professional, knowledgeable, and show up on time.
      Khadijah Alibhai
    • J
      "Very pleased we chose Air Treatment Co."
      I now have a brand-new set of systems that work beautifully, along with a great team of knowledgeable, skillful, and considerate technicians.
      Joe Oz
    • e
      "Always on Time and Courteous"
      They have been doing our inspections and maintenance since. Are always on time and courteous and don't push to upsell.
      elliot norman
    • D
      "Always Great Service"
      Always a great service from Air Treatment.
      Dan Cusimano
    • P
      "I Highly Recommend Air Treatment Heating & Cooling"
      They made the entire process easy from start to finish.
      Paula Ewen
    • S
      "Very Pleased With the Service"
      Steve from Air Treatment and Heating & Cooling came on time and was very courteous.
      Squad 137
    • S
      "Very Pleased With the Service"
      I was very pleased with the service.
      S AP Martin
    • P
      "Fantastic Service"
      These are very trustworthy people.
      Payam Vahid
    Air Treatment Is the Best
    Air Treatment is the best. They’re honest, fair, and extremely professional. It’s refreshing to work with a company that does what it says it will do. I highly recommend them.
    Raef H
    Great People Who Always Do a Great Job
    Great people who always do a great job and are always honest when it comes to pricing.
    Ken H
    Dee is a great technician
    Dee is a great technician. He can quickly diagnose an issue and get it resolved. He is truthful and will always expect how my system is functioning. Thank you!!
    Janet Reid
    Mike was fantastic
    Mike was fantastic—came at the start of the scheduled window, was deeply knowledgeable, and a pleasure to work with. He did a ton of work on the units, all covered by the annual service plan.
    Masha Hansford
    Service technician was courteous
    Service technician was courteous and thorough. So far, all my interactions with Air Treatment Heating & Cooling have been awesome.
    Joanne Alger
    Air Treatment Was Great!
    Air Treatment was great! I called with a concern, and they got me an appointment the same day. They were fast and professional.
    Christan Summers
    Great service
    Great service. Looked for ways to save me costs, which was much appreciated.
    William Brenner
    Very good, clean work
    The techs showed up on time with the correct plan in hand and did very good, clean work. I’m happy to have found Air Treatment.
    C W
    Very Happy With This Technician
    Tech was late, but appropriately apologetic and professional to discuss things with. I thought that he was supposed to have 2 other guys with him to help, but it was only him. He worked really hard. He was courteous and careful. He cleaned up all messes. He did run into an odd issue, but told us to contact the office to schedule someone else to fix that issue. It would have been nice to have a team here for consensus. Very happy with this technician. He deserves a raise for how hard he worked.
    Andrea Radcliffe
    Courteous, Helpful, and Knowledgeable
    Technician was courteous, helpful, and knowledgeable. He pointed out potential concerns, yet was not pushy. He is welcome back in the future.
    R Ritter
    You Guys and Your Technicians Are Always Great
    You guys and your technicians are always GREAT. Thanks so much.
    Kevin Hulbert
    Elmer was a great tech!
    Elmer was a great tech! He showed up on time and had the equipment to fix our system on-hand.
    Colin Anderson
    Always Professional
    Always professional. They call when they’re on the way and explain what’s going on with your system without pressure.
    kellie lavey
    Thorough and Professional
    As usual, AirTreatment folks showed up when they promised, and were thorough and professional.
    Sara Gann
    Phenomenal Service from Air Treatment
    Phenomenal service from Air Treatment and Cooling! Their technician, Mike McEwan, did a fantastic job fixing my broken HVAC damper. I really appreciated that I wasn't charged anything beyond the initial diagnostic fee. Mike also took extra time to explain how to manage my system better. He is a friendly, professional, and excellent communicator who made the entire process seamless. The honesty in giving me all options, costs, and trade-offs was particularly helpful. I will absolutely use them again and highly recommend Mike and the team to everyone!
    Ajay kandukuri
    Outstanding service once again
    Outstanding service once again from our technician Nabil. Very appreciative of his service each and every time we specifically request him. Nabil continues to be most efficient in servicing our needs. Our sincere thanks to him.
    Margo Zoian
    Timely and Thorough Service and Repairs
    We have been working with Air Treatment H&C for many years. They always provide timely and thorough service and repairs, staff is respectful and knowledgeable, and pricing is fair.
    Jennifer McLaughlin
    Courteous, Knowledgeable, and Efficient
    Will and his team are courteous, knowledgeable, and efficient. We've used other companies in the past with mixed results, but we trust Chamberlain.
    Steve Kaltenbaugh
    The Best Service
    The best service. Everyone should have a yearly maintenance contract. Very professional and so kind and caring. Love this company.
    Louise Lighthart
    Service Was Excellent
    The problem was quickly taken care of and the service was excellent.
    Petra Engle
    The entire operation is top notch
    The entire operation at Air Treatment is top notch. Pricing (paramount), scheduling, timing, technicians—knowledgeable, polite, tidy, informative. Amazing.
    Mark Stahl
    Beyond My Expectation for Excellent Services
    This was the first meeting with Air Treatment personnel that went beyond my expectation for excellent services. Dillon was an HVAC system font of knowledge, explaining in detail the HVAC cleaning system and benefits. No hype, no hard sell, but a common-sense approach to identifying our system and its overall needs.
    Frank Biviano
    Consistently Great Experience
    Consistently great experience with Air Treatment Company for HVAC maintenance. The staff and technicians are always respectful, professional, knowledgeable, and show up on time.
    Khadijah Alibhai
    Very pleased we chose Air Treatment Co.
    After many years with one of the largest heating/AC service providers available in the Northern VA area - who got too big to provide good customer service to the little guy - I'm very pleased that we chose the Air Treatment Co. I now have a brand-new set of systems that work beautifully, along with a great team of knowledgeable, skillful, and considerate technicians. Patrick B., one of the team, just provided us with our springtime maintenance; he did a great job and is welcome back anytime! Thanks, Patrick.
    Joe Oz
    Always on Time and Courteous
    We have been using Air Treatment Company for almost 10 years. They took us through the install of gas to the house, when we changed to a gas furnace and water heater. They have been doing our inspections and maintenance since. Are always on time and courteous and don't push to upsell.
    elliot norman
    Always Great Service
    Always a great service from Air Treatment, have had them for 27 years.
    Dan Cusimano
    I Highly Recommend Air Treatment Heating & Cooling
    I highly recommend Air Treatment Heating & Cooling. The staff and technicians are customer-focused, knowledgeable, professional, and customer-friendly. I researched companies and found Air Treatment Heating & Cooling to provide the BEST cost, system, and overall package for my HVAC unit. They made the entire process easy from start to finish. Will be a long-time customer and hope you are, too!
    Paula Ewen
    Very Pleased With the Service
    Steve from Air Treatment and Heating & Cooling came on time and was very courteous when entering, placed shoe covers on, and went straight to work servicing my unit in an efficient and timely manner. I was very pleased with the service. I pay for this service for two visits a year, and it is very reasonable.
    Squad 137
    Very Pleased With the Service
    Steve from Air Treatment and Heating & Cooling came on time and was very courteous when entering, placed shoe covers on, and went straight to work servicing my unit in an efficient and timely manner. I was very pleased with the service. I pay for this service for two visits a year and it is very reasonable.
    S AP Martin
    Fantastic Service
    Fantastic service. Steve was great. These are very trustworthy people. I’m glad that I was recommended to them.
    Payam Vahid
    Why Trust Our Services?
    • Honest Pricing And NATE-Certified Technicians

      Upfront quotes and highly trained pros who get it right first time.

    • Tailored Comfort Solutions For Your Home

      Custom HVAC installs, repairs, and maintenance for any home.

    • Trusted Local HVAC Experts For 50+ Years

      Family-owned, serving Fairfax and Northern Virginia since 1969.

    • Fast, Reliable HVAC When You Need It Most

      Prompt emergency repairs and service to restore comfort fast.

    Proudly Serving Your Area
    • Leesburg
    • Loudoun County
    • Ashburn
    • Sterling
    • Reston
    • Herndon
    • Potomac Falls
    • Broadlands
    • Dulles
    • Purcellville
    • South Riding
    • Countryside
    Call Us Today! 703-270-0881
    or Contact
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