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Furnace repair in Stafford, heat pumps included, is priced from our book: the diagnostic visit is $99 and a flame sensor cleaned is $95 to $180.
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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 Stafford
The two weather stations nearest Stafford agree about July and part ways in January. At the Marine Corps air station at Quantico, on the Potomac about 8 miles northeast of the courthouse, January lows average about 28 and about 76 nights a year reach freezing. At Fredericksburg, about 10 miles south-southwest on the Rappahannock, it’s about 25 and close to 101 nights, with about 4,300 heating degree days a year to Quantico’s 4,000.
Most of that heating falls to heat pumps. Electricity heats about 97 percent of Aquia Harbour’s owner homes and close to two in three across 22556. Down toward the teens a heat pump leans on the electric strips in the air handler, and the meter spins. One that runs on strips all day in mild weather, or blows cool air for long stretches, usually has a problem outside: a defrost control, a reversing valve, a refrigerant leak.
The cold snaps that find weak parts are on record: wind chills around 6 below at Stafford Regional Airport on New Year’s Day 2018, and three nights under Extreme Cold Warnings at the end of January 2026, with cold that hung on into February. Long stretches like that are when limping parts quit: an inducer motor that’s been noisy since fall, a blower motor bearing, a control board. A blower motor is $670 to $2,400.
Gas reaches close to four owner homes in ten in 22554 but only about one in eight in 22556, where about one in seven burns propane from a yard tank. Either way the furnace needs electricity for its inducer, igniter and blower, so a storm that drops the lines stops the heat too, as snow-loaded trees did across the county in February 2010. When power returns, some furnaces sit locked out: set the thermostat to off for five minutes, then back to heat, before you call.
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 |
|---|---|---|---|---|
| Aquia Harbour | 1984 | single-family houses, nearly all | electricity, nearly all | Mostly electric heat, usually heat pumps with backup strips. |
| Stafford Courthouse | 2005 | single-family houses, about 4 in 10 | gas, about 6 in 10 | Gas furnaces near 20 years old, many still original. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIPs 22554 and 22556 as a whole: every Stafford address. The Census places in the table hold about one in seven of these homes.
What you’d notice
In a heat pump house that’s often the backup heat. The electric strips in the air handler carry the house when the outdoor unit can’t, and a burned-out element or a tripped breaker on them stays hidden until a night in the teens. Check the air handler’s breaker first, then call.
A few minutes of cool air in winter is a defrost cycle, and that’s normal. Cool air all the time, or emergency heat running all day, is a call.
Dust burning off the heat exchanger smells for the first few minutes of the season, then stops. A gas smell is different: leave the house and call your gas company from outside.
Choosing who fixes it
Questions worth asking anybody who comes out, us included.
Out toward the Fauquier line about one owner home in seven burns propane, and a propane furnace is set up differently from a natural gas one, from the gas valve to the burner orifices. Ask whether the tech services propane before you book. Ours do.
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 price and service. Had our AC/heating system replaced. Gave us a great price and top quality install. Can’t say enough good things about them.
Where we work
Next door to Stafford: Fredericksburg, Quantico, Triangle, Dumfries and Midland.
Questions
For a gas or propane furnace, yes, even the same size in the same spot. Virginia’s building code doesn’t exempt a gas-fired appliance, and Stafford County takes the appliance permit on its Residential Change application. A heat pump or electric furnace going back in as the same type and size needs none, and a repair never does.
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 Stafford 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.