Open 24/7 for emergencies
Heating repair in The Plains starts with a $99 diagnostic visit, for the heat pumps and propane furnaces that keep most of 20198 warm.
Get your price in writing
Send this and the office calls or texts you back to set a time.
We’ll call or text this number about your request. By sending it you agree to our terms and privacy policy.
Rather talk now? (703) 997-9757
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 The Plains
A gas main is the exception in 20198: of the 589 owner homes the Census counts, 16 heat with natural gas. Electricity heats 349, usually a heat pump with electric strips in the air handler as backup, and propane heats 134 from a tank in the yard. Some houses pair the two, with a propane furnace behind a heat pump for the coldest nights. We work on all of it.
Fauquier County’s building code sizes heating for a 17 degree night, and NOAA’s 1991 to 2020 normals for its Warrenton 3 SE station, about 12 miles south, count about five nights a year at 10 or below and around 13 days that never climb past 32. A heat pump alone usually hands part of the load to its backup well above 17, so aux heat on a 20 degree night is normal. Aux heat all afternoon at 45 is not.
Late January 2026 brought Extreme Cold Warnings to northern Fauquier, and a weather station labeled The Plains, nearly five miles north of town, logged wind chills of 6 below on February 1 and 5 below on February 8. Weeks like that are when a cracking igniter finally lets go on a propane furnace, $240 to $410 to replace. In a stretch like that, watch the propane gauge too.
Storms take the heat out by taking the power. The March 2, 2018 nor’easter blew 55 knot winds across northern Fauquier and put trees and wires down all over the county, many on houses. A propane furnace needs house current as much as a heat pump does, for its igniter, inducer, blower and control board. When the power returns and the heat doesn’t, check the furnace’s service switch and the breaker. If both are on and it’s still dead, a surge may have taken the control board, $550 to $1,180 to replace.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIP 20198 as a whole, the Town included: its own homes are too few for steady Census figures.
What you’d notice
A heat pump that hands the house to its backup strips when it’s 45 out has a problem of its own: a coil caked in ice that won’t defrost, an outdoor fan that stopped, or low refrigerant. The strips keep the house warm, which is why it goes unnoticed. Book the $99 diagnostic visit before the next cold front.
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.
Safety and paperwork
Fauquier County Fire Rescue takes requests for help getting smoke and carbon monoxide alarms through a form on its Public Education page. 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.
Freezing rain coats a heat pump’s coil from the outside, the way the February 14 and 15, 2016 ice storm left 0.2 to 0.3 inch of ice across northern Fauquier. Ask whether the tech forces a defrost and watches it clear the coil. A heat pump that can’t shed ice ends up living on its backup.
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.
I returned to SwiftPro for services to add safety devices for water heating system. Thank you Moises for doing a superb job! Very happy with SwiftPro services once again! Cheers!
Where we work
Next door to The Plains: Broad Run, Haymarket, Rectortown, Marshall and Gainesville.
Questions
With fuel in the tank, it’s usually one of two parts. Burners that light and drop out within seconds point to a coated flame sensor, cleaned for $95 to $180. No glow at all usually means a cracked igniter, $240 to $410 to replace. The diagnostic visit at $99 tells you which before anything is swapped.
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 The Plains 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.