Two HVAC pros, a Herndon base, and a phone that gets answered.

911Air-Care was started in 2023 by two heating and cooling professionals with more than a decade of experience. They set it up in Herndon and built it around a simple idea: when someone's system breaks, a person should answer the phone, and the tech who shows up should explain the problem before selling anything.

That second part is what customers write about most. Reviews keep naming the techs, Ali and Parsa among them, and keep saying the same things: they explained the issue, laid out the options, and didn't push work the house didn't need.

The name says emergency, and we do answer around the clock. Most of our work, though, is ordinary: tune-ups, repairs, a new system when the old one is done, a humidifier for dry winters, a water heater that quit on a Tuesday.

What we work on

• Furnaces, air conditioners and heat pumps, repaired and replaced
• Ductless mini-splits
• Indoor air quality: purifiers, humidifiers, dehumidifiers and ventilation
• Water heaters, tank, tankless and heat pump
• Water descalers and hot water recirculation
• Maintenance plans for heating, cooling and water heaters

On record

• 911Air-Care LLC, 1210 Autumn Pl, Herndon, VA 20170
• Virginia Class C contractor license #2705-193952
• Rated 4.9 from 153 Google reviews and 4.9 from 222 Thumbtack reviews (October 2026)
• Thumbtack Top Pro in 2024 and 2025, hired there 391 times, background checked and license verified
• Started in 2023

How a visit goes

You get a booking confirmation with your arrival window. Your tech calls before heading over and sends a GPS link so you can see when they will arrive. Once there, they find the cause, explain it in plain language, and give you options. Most repairs are done on that first visit.