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The diagnostic visit is $99, and a flame sensor cleaned is $95 to $180 from our published price book.
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Furnace and heat pump repair in Fairfax Station, 22039, on gas, propane or electric heat, in houses big enough for two systems. Priced first.
5.0 stars across 1,132 reviews
Two of our technicians in a Northern Virginia utility room, between the furnace and the water heater.
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceOften same-day, and we will tell you honestly when we can get there.
Our own HVAC installersA dedicated heating and cooling team, separate from our plumbers
Price in writing firstYou see every option priced before anything is ordered
What it costs
The same price book as the rest of our site. The diagnostic visit is $99, and the tech prices the repair before starting it.
Flame sensor cleaned
$95 to $180
Igniter or flame sensor replaced
$240 to $410
Blower wheel pulled and cleaned
$300 to $440
Thermostat replaced
$300 to $640
Control board
$550 to $1,180
Blower motor
$670 to $2,400
Repair diagnostic visit
$99
Often same-day, and we will tell you honestly when we can get there.
With Comfort+ membership, $20 a month or $199 a year, the diagnostic visit is included, any service is 15% off, and a heating maintenance visit comes every fall.
What’s different in Fairfax Station
Across the 22039 ZIP about 6 in 10 owner homes heat with natural gas and about 3 in 10 with electricity, which out here usually means a heat pump. The rest, about 1 in 12, burn oil or propane. That’s a few hundred houses with a tank on the property, and it changes what a no-heat call looks like.
Inside the subdivisions, Crosspointe above all, where about 8 in 10 owner homes heat with gas, it’s a gas furnace on Washington Gas and the usual short list of parts: flame sensor, igniter, inducer motor, pressure switch. On the big lots the same kind of furnace may burn propane from a tank in the yard, and apart from the fuel supply it breaks the same way, so the repair prices further down apply to both.
An oil furnace or boiler wants a yearly service from an oil heat company, and we don’t work on oil burners. When an old one finally fails, a heat pump or a propane furnace in its place is ours to price.
With about 9 in 10 houses here at four bedrooms or more, a lot of Fairfax Station homes split the heat into two systems or zones: a furnace for the main floors and a heat pump or a second furnace for the bedrooms. The one serving rooms you rarely use can quit unnoticed until the first cold night, so turn every thermostat up once in early fall and make sure each system answers.
Neighborhood by neighborhood
Census figures for each place, and what that usually means for the heat. Median year built and heat count owner-occupied homes only.
| Place | Median home built | Most homes are | Heated with | What the heat usually is |
|---|---|---|---|---|
| Fairfax Station | 1982 | single-family houses, about 9 in 10 | gas, about 5 in 10 | 1980s and 90s houses, most on their second furnace. |
| South Run | 1988 | single-family houses, nearly all | gas, about 9 in 10 | 1980s and 90s houses, most on their second furnace. |
| Crosspointe | 1993 | single-family houses, nearly all | gas, about 8 in 10 | 1980s and 90s houses, most on their second furnace. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIP 22039 as a whole: every Fairfax Station address. The Fairfax Station Census place in the table also takes in streets with Fairfax mail.
What you’d notice
On a propane house, if the furnace, the water heater and the stove all quit together, check the gauge on the propane tank before anything else. A tank that ran dry is a delivery and a leak check, not a furnace repair.
The burners fire and go out a few seconds later, over and over. That’s usually a dirty flame sensor, and cleaning it takes about ten minutes.
No glow, no flame. A cracked igniter is the usual part, and on a high-efficiency furnace a clogged condensate line can stop it cold too.
Safety and paperwork
Fairfax County Fire and Rescue says to have the heating system cleaned and checked by a professional every year, and to keep anything that burns at least three feet from the furnace and the water heater. Source.
Fairfax County Fire and Rescue names a faulty gas furnace or water heater as a carbon monoxide source, says to have gas appliances inspected every fall, and to put a CO alarm on every floor. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who fixes it
Questions worth asking anybody who comes out, us included.
Out here that might be natural gas, propane, a heat pump or oil; we work on all of them but the oil burners. Wherever you call, ask before booking whether the tech coming out works on yours.
Flame sensors, igniters and control boards all have a going rate. A tech who can’t tell you the number before starting is asking you to find out afterwards.
Getting the burners lit is half a heating call. Ask whether they check the flue and test for carbon monoxide while the panel’s open.
A big repair on a furnace past 15 or 20 years deserves a replacement price next to it. A good tech puts both numbers in front of you and lets you choose.
Two of our crew going over a work order before the day's calls.
From our Google reviews
5.0 stars across 1,132 reviews. Read them on our reviews page.
Excellent work done honestly and efficiently. Efrain the technician was great. Was able to diagnose the problem quickly and get my older Amana gas furnace system working again.
Where we work
Next door to Fairfax Station: Burke, Clifton, Springfield, Fairfax and Annandale.
Questions
That’s dual fuel. The heat pump carries the house until the outdoor temperature drops to a set point, then the furnace takes over. If the furnace is firing on mild days, or the heat pump never runs, the switchover setting or the heat pump itself needs a look, and the tech prices any repair from the book before starting it.
Every system stops. A gas or propane furnace needs power for its igniter, its inducer and its blower, and a heat pump needs it for everything. A generator only helps if the furnace circuit is on it, so check that before winter, along with the well pump if you have one.
The diagnostic visit is $99. A flame sensor cleaned is $95 to $180; an igniter or flame sensor replaced, $240 to $410; a control board, $550 to $1,180; a blower motor, $670 to $2,400.
Fix the small parts on almost anything. Before a big repair on an old furnace, look at the replacement number: a furnace alone, keeping the air conditioner you have, runs $4,285 to $14,040 installed, and the HVAC estimator gives your number in about a minute. From about $71 a month at 0% APR for 60 months, the whole price financed, on approved credit.
Ready when you are
Call, or send the form at the top. The tech prices the repair from the book before starting, and if the furnace is at the end of its life you’ll hear that first.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Fairfax Station and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,132 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.