Sterling heating and cooling, just up Route 28.
Furnace, AC and heat pump repair, new systems and water heaters for Sterling homes in eastern Loudoun County.

Sterling is the first stop over the Loudoun County line, and a short trip up Route 28 for us. We see a lot of Sterling homes that are still running original or second-generation equipment, and a lot of homeowners deciding whether to repair one more time or replace.
We give you both answers. If a repair makes sense, we do it. If the numbers say replace, we show you options at more than one price and leave the decision to you.
Sterling is just across Route 28 from Herndon, about ten minutes from our base on a normal day.
The houses in Sterling
Sterling Park was one of the first big subdivisions in eastern Loudoun, built in the 1960s, and neighborhoods like Sugarland Run, Countryside and Cascades followed through the 70s, 80s and 90s. That means split-levels, ramblers, colonials and townhouses, many with a gas furnace in the basement or utility room and a heat pump or AC outside.
What the weather does to systems here
Basements and utility rooms around here run damp in summer, which is hard on equipment sitting down there and a good case for a whole-house dehumidifier. In winter, older ductwork in split-levels often leaves the lower level cold while the upstairs bakes.
What we do in Sterling
- Heating and AC repair. No heat, no cooling, strange noises, warm air from the vents. Furnaces, air conditioners and heat pumps of every major brand, 24/7.
- New system installation. A new furnace, air conditioner or heat pump when the old one is past saving, sized for your house and installed clean.
- Indoor air quality. Whole-house purifiers, humidifiers, dehumidifiers, fresh-air ventilators and smart thermostats that work with the system you have.
- Water heaters. Tank, tankless and heat pump water heaters, plus expansion tanks, mixing valves and recirculation pumps. Same-day service is common.
Around Sterling
We work around Sterling Park, Sugarland Run and Countryside, Cascades and Lowes Island and Route 7 and Dulles Town Center, and in Herndon and Ashburn too.
Heat or AC trouble in Sterling?
Call and a real person picks up, any hour. We find the cause and give you your options before any work starts.
Often, yes. It can be the ductwork, the balance of the system or the equipment itself. Zone dampers or a ductless head can help. We will look before recommending anything.
Yes. Emergency service runs every day, and the phone is answered 24/7 at (571) 910-9901.
Tell us what the system is doing.
Call, email or send the form and we will set a time. If the heat is out in winter, the AC is down in a heat wave, or water is coming from the unit, call. A live person answers 24/7.
- Phone(571) 910-9901
- Other lines(703) 772-8384 · (571) 524-0276
- Emailinfo@911air-care.com
911aircare@gmail.com - OfficeMon to Sat, 8:00 am to 5:30 pm. Phone and emergency service 24/7.
- Address1210 Autumn Pl, Herndon, VA 20170
