A Live Person Answers
Every hour of every day, nights and weekends included.
Google Rating
From 154 Google reviews across Northern Virginia.
Fast Appointments
Appointments may be available, and many repairs are completed during the first visit, depending on the job.
Estimates on new systems and replacements
options explained up front.
Explore Our Services
Heating, cooling, air and water — the systems that keep a Northern Virginia home comfortable, covered by one local crew.
Heating and Cooling
Repair · Installation · Heat pumps · Ductless mini-splits · 24/7 emergency
Water Quality
Water heaters · Tankless systems · Filtration · Descalers · Recirculation
Indoor Air Quality
Air purification · Humidifiers · Dehumidifiers · Ventilation · Smart thermostats
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 around the clock.
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 neighbours across Northern Virginia, not a national call centre.
Free Estimates
From routine fixes to full system replacements, get a clear estimate and your options up front, with no pressure.
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.
- 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 are never left without comfort
- From routine fixes to full system replacements
Hours and Phone
Monday – Saturday: 7:00 AM – 5:00 PM
Sunday: Closed
Emergency service: 24/7
Call or Text (24/7): (571) 910-9901
Text only (24/7): (571) 609-3671
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 are not 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 approve.
From Our Own Jobs
Real installs and service calls by the 911Air-Care crew, no stock photos.
4.9 ★★★★★ · 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.”
GOOGLE REVIEW“Great people. Job done very accurately, fast and within budget.”
GOOGLE REVIEW“Always a thorough and honest experience with Parsa and this team.”
GOOGLE REVIEW“Excellent service!!! Highly recommend!!! Parsa was awesome!”
GOOGLE REVIEW“From the first contact, the team was professional, responsive, knowledgeable, and respectful.”
GOOGLE REVIEW“Ali did a great job for a fair price.”
GOOGLE REVIEWHerndon and the Rest of Northern Virginia
Quality service at competitive prices across Northern Virginia, from our home base in Herndon.
Have you ever maintained your system before winter or summer?
A seasonal tune-up catches the small problems before they become no-heat days, and helps you follow the manufacturer’s maintenance guidance.
Frequently Asked Questions
Can I reach someone at night or on a Sunday?
Yes. The office is open Monday to Saturday, 7:00 AM to 5:00 PM and closed Sundays, but the phone is answered 24/7 for emergencies — call or text (571) 910-9901 any hour.
What areas do you cover?
Herndon, Reston, Vienna, Fairfax, Falls Church, Arlington, Alexandria, Leesburg, Manassas and Tysons, and the wider Northern Virginia area.
What brands do you work on?
All major brands of furnaces, air conditioners, heat pumps and ductless systems, including Goodman, Rheem, Bryant and LG.
Do you offer maintenance plans?
Yes — seasonal tune-ups for HVAC systems and water heaters, with priority scheduling and a written report after every visit. See our maintenance plans for details.
From the Blog
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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…
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…
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…
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…
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…
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…
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…
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…
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°…
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 heat? Furnace diagnosis and repair, most fixes completed on the spot. · No cooling? Same-day AC repair across Northern Virginia, nights and weekends too. · No hot water? Water heater repair and replacement, emergency service runs 24/7.