HVAC, Heating & AC Repair in Ashburn, VA

For over 50 years, R.A. Dobson has kept Ashburn homes comfortable through humid Virginia summers and cold Loudoun winters. From the newer builds in Brambleton, Broadlands and Moorefield Station to the established streets of Ashburn Farm, Ashburn Village and Belmont Country Club, our licensed technicians handle heating, cooling and plumbing across every corner of Ashburn — often same day, from our shop just minutes away in Sterling.

Ashburn grew up fast. Much of its housing stock went up during the 1995–2015 boom, which means a large share of homes are now running first-generation air conditioners, furnaces and heat pumps that are 15–25 years old — right at the age when efficiency drops and repair bills start to climb. We help Ashburn homeowners make the honest call between a smart repair and a right-sized replacement, with upfront pricing and no pressure.

Neighborhoods we serve in Ashburn: Ashburn Village, Ashburn Farm, Brambleton, Broadlands, Belmont Country Club, Loudoun Valley Estates, Moorefield Station, One Loudoun, Goose Creek Village, Farmwell Hunt and Windmill Parc — plus the surrounding communities along the Loudoun County Parkway and Waxpool Road corridors.

Whether it’s an AC that quit during a July heat wave, a furnace that won’t fire in January, a failing water heater or a spring tune-up before the season turns, R.A. Dobson handles it. As a Carrier Factory Authorized Dealer, we install and service the region’s most reliable equipment — and we stand behind every job with a workmanship guarantee.