"I've been working with Ali and team at 911 Air-Care for a couple years now for seasonal maintenance. I recently had a recurring issue crop up with one of my mini-splits that previous companies had failed to properly address. I told Ali my concerns with previous repair attempts, and he and his techs dug deeper and found the potential root cause, rather than just replacing parts. Their solution seemed logical and much more likely to be a long term fix. Time will tell if that's the case, but I am very pleased with the process and work."
In our customers' words.
Rated 4.9 from 153 Google reviews and 4.9 from 222 Thumbtack reviews as of October 2026. These are copied as each customer wrote them.
"I needed to find out what was going on with my hvac system in my condo. Parsa was so helpful with diagnosing the problem. And gave me great recommendations. He even went above and beyond with speaking to the maintenance workers and to my upstairs neighbor whose hvac system was leaking into mine. The price quoted was also very reasonable. Personable and Professional! I highly recommend 911Air-Care"
"Same-day service on tankless water heater. Quick, great service, and easy pricing. Would recommend and use again."
"The tech Ali gave a lot of helpful suggestions and was very knowledgeable about the system. I called for estimates on changing the HVAC register box in an apartment. Ali gave me several options to get better performance out of a system that previously has been giving me several problems and I was questioning whether the building was suitable for central air. I appreciate being advised on different options to choose instead of just making a fix that would have to be redone in a few months."
"AC broke and 911 was the first available despite already being late in the day. They figured out the issues quickly and even had the right part. I like them so much I had them come back to do some routine maintenance that was sorely needed."
"Parsa diagnosed my Heating issue quickly, And only charge the diagnostic fee. He also gave me ideas of next steps in the event of future Issues"
"Quick, efficient and good value. They came out two hours after inquiry, fixed the issue and we are pleased with the service. Thank you!"
"Great experience. They gave me a 3-hour window for service and showed up on time. I'm a new landlord, and this was for a maintenance check on the HVAC system, so I'm happy to work with reliable folks on projects. Thanks for everything!"
"Our technician Parsa was super friendly and knowledgeable. He fixed our problem in a jiffy and took the time to give us advice on how to avoid the problem in the future."
"The men that were here were professional, attentive to caring for my house and very thorough in the work they did"
"Always a thorough and honest experience with Paras and this team."
"Ali did a great job for a fair price."
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
