Welcome, 911Air-Care Heating, Cooling and HVAC Repair in Northern Virginia
911Air-Care provides residential and commercial heating and air conditioning repair, installation, maintenance, and emergency HVAC services throughout Northern Virginia. We help homeowners maintain comfortable, efficient homes with dependable service and practical solutions.
Explore Our Services
Heating, cooling, air and water, the systems that keep a Northern Virginia home comfortable, covered by one local crew. Each service has its own page.
Heating and Cooling
Water Quality
Indoor Air Quality
Maintenance Plans
Why Homeowners Call 911Air-Care
The patterns Northern Virginia homeowners look for, and the ones our 154 Google reviews keep confirming.
A Live Person, 24/7
No heat at 2 AM? The phone is answered by a real person, every hour of every day, and emergency service runs nights and weekends.
Fast, Honest Repair
We diagnose the problem, explain your options in plain language before any work starts, and complete most repairs on the spot.
All Major Brands
Furnaces, air conditioners, heat pumps and ductless systems, whatever is in your house, our certified technicians service it.
Local Herndon Crew
Based at 1210 Autumn Pl in Herndon, serving our own neighbors across Northern Virginia, not a national call center.
Free Estimates
From routine fixes to full system replacements, get a clear estimate and your options up front, with no surprises.
4.9 Stars, 154 Reviews
Customers remember the tech by name, Ali, Parsa and the crew come up again and again in our Google reviews.
HVAC Repair in Northern Virginia
When your heating or cooling system stops working, you need repair that is fast, honest, and done right the first time. Our certified technicians diagnose the problem, explain your options in plain language, and complete most repairs on the spot.
- All major brands of furnaces, air conditioners, heat pumps and ductless systems serviced
- Your options explained before any work starts, no surprises
- 24/7 emergency support, so you're never left without comfort
- From routine fixes to full system replacements
Hours and Phone
From Your Call to the Fix
Every call goes the same way, so you always know what happens next.
You Call
A real person answers, day or night. Tell them what the system is doing and when you can be home.
Confirmation
We send a booking confirmation with your arrival window, so you aren't waiting around all day.
On the Way
Your tech calls before heading over, so you know exactly when to expect us at the door.
You Pick the Fix
We find the cause, explain your options in plain language, and do most repairs on the spot once you choose.
From Our Own Jobs
Real installs and service calls by the 911Air-Care crew, no stock photos.
154 Google reviews, customers remember the tech by name: Ali, Parsa and the rest of the crew come up again and again.
Get the Same Service, Call Now"The tech Ali gave a lot of helpful suggestions and was very knowledgeable about the system… I appreciate being advised on different options to choose."
"Great people. Job done very accurately, fast and within budget."
"Always a thorough and honest experience with Parsa and this team."
"Excellent service!!! Highly recommend!!! Parsa was awesome!"
"From the first contact, the team was professional, responsive, knowledgeable, and respectful… honest service, and a professional team!"
"Ali did a great job for a fair price."
Herndon and the Rest of Northern Virginia
Quality service at competitive prices across Northern Virginia, from our home base in Herndon.
HerndonHome base
RestonNext door
ViennaServed daily
FairfaxServed daily
Falls ChurchServed daily
ArlingtonServed daily
AlexandriaServed daily
LeesburgServed daily
ManassasServed daily
TysonsServed daily
Frequently Asked Questions
Can I reach someone at night or on a Sunday?
What areas do you cover?
What brands do you work on?
Do you offer maintenance plans?
Serving All of Northern Virginia
From the Blog
Keep the Area Around Your Furnace Clear in Alexandria, VA
Cooler nights are coming to Alexandria. Use a mild day to clear boxes, laundry and stored paint away from your furnace, and keep its openings and access clear…
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Find and Seal Small Drafts Around Doors and Windows in Fairfax, VA
Feel a cool edge around a closed door or window? A simple tissue test shows where drafts sneak in, and most small gaps are easy to seal…
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Check Your Heating Vents This Mild Week in Vienna, VA
A mild week in Vienna is the perfect time for a five-minute walk-through: check every heating vent in the house before the cold nights arrive…
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Check Your Furnace Filter This Mild Week in Reston, VA
Mild fall weather in Reston is the perfect time for a two-minute furnace filter check, the simplest job that protects your heating system…
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Carbon Monoxide Safety: 5 Checks for Northern Virginia Homes This Heating Season
Carbon monoxide has no smell and no color. Five checks for this heating season: alarms on every level, a monthly test, clear vents, and a yearly furnace safety check…
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5 Heating Checks Before Winter
The first cold snap in Northern Virginia usually arrives without much warning, and it often catches furnaces that sat idle all summer. A little preparation in fall can help you ca…
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6 Water Heater Warning Signs
Water heaters often show warning signs before they fail, but not always, and some problems appear with little notice. Catching these six signs early can help you avoid water damag…
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Dry Air at Home? Simple Humidifier Tips for Cold Nights in Northern Virginia
Fall in Northern Virginia can feel like two seasons in one day, mild, sunny afternoons and clear, cold nights. When the heat runs through those cold nights, the air inside many ho…
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How to Reverse Your Ceiling Fan for Winter in Herndon, VA
Nights are getting colder in Herndon and across Northern Virginia. This weekend, temperatures will drop close to 39°F after dark. As it gets colder outside, your heating system may…
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Thermostat Tips for Frosty Mornings and Mild Days in Northern Virginia
Herndon has a Frost Advisory early Monday morning, October 26, from 1 to 9 AM, with temperatures dropping to near 37°F before sunrise and areas of frost, then a sunny day near 69°…
Read the article →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.