Cleaner air without a new system.
Whole-house air purification, humidity control and ventilation for Northern Virginia homes.

Most people think about the air outside, but we spend most of our time indoors, where smoke, cooking, mold, cleaning products and dust all build up. Kids, older family members and anyone with allergies or asthma feel it first.
The fix doesn't have to be a new furnace. The air quality equipment we install bolts onto the system you already have. A whole-house purifier catches what a filter misses, a humidifier stops the dry winter air, a dehumidifier handles a damp basement, and a ventilator brings in fresh air without throwing away the heat.
What the job includes
- Whole-house electronic air purifiers
- UV fresh-air in-duct purifiers
- Fan-powered evaporative and steam humidifiers (Aprilaire 700 and 800)
- Whole-house dehumidifiers (Aprilaire 70 and 130 pint)
- Energy recovery ventilators (Aprilaire 8100) and Panasonic WhisperComfort
- Zone dampers and radon mitigation fans
- Smart Wi-Fi and indoor air quality thermostats
Signs it's time to call
- Dust settles again a day after you clean
- Static shocks, dry skin and cracked wood floors in winter
- A musty basement or condensation on the windows
- Allergies that are worse indoors than outside
- Rooms that feel stuffy with the system running
What it costs
We publish four packages. Basic is $4,588 (smart thermostat, whole-house purifier, Aprilaire 700 humidifier and a UV in-duct purifier). Economy is $7,002 and adds a Panasonic ventilator. Standard is $14,838 with the Aprilaire 5000 purifier, 800 steam humidifier, 8100 energy recovery ventilator and a dehumidifier. Pro-Quality is $18,200 with every option included. A new system, where needed, is priced separately. Each package can be upgraded, and we also install single pieces.
From our jobs
From a customer
"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."Valerie Ali, Google review
No heat, no cooling, or no hot water?
Call and a real person picks up, any hour. We find the cause and give you your options before any work starts.
No. These packages work with your existing heating and cooling system. If a new system makes sense anyway, we can install both together.
It depends on what is bothering you: dust, dry air, damp air or stale air. Call (571) 910-9901 and we will start with that and suggest the smallest setup that fixes it.
Radon mitigation fans are an option in our packages. We install the fan; testing should come first.
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



