Open 24/7 for emergencies
The diagnostic visit is $99, and a flame sensor cleaned is $95 to $180 from our published price book.
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Heating repair in Marshall, 20115, for heat pumps, propane furnaces and the backup heat behind them, priced before any work.
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 Marshall
Natural gas heats under 1 percent of Marshall’s owner homes. About six in ten use electricity, mostly heat pumps with electric strips behind them, and one in five propane. A January heat pump call usually comes down to an outdoor unit that won’t defrost, airflow choked by a filter or coil, or a thermostat left on emergency heat. Check that last one yourself: if the display says EM or emergency heat and nobody set it, the strips are doing all the work.
In some propane houses the furnace backs up a heat pump, which runs most of the winter while the furnace takes the cold nights. If the two fight, with the furnace firing on a mild afternoon or the heat pump straining through a cold night, the switchover point on the thermostat or control board is usually set wrong: a settings fix, not a part.
About three households in ten in 20115 rent. In a rental the heat pump or furnace is usually the owner’s, and so is the call on a repair, so a tenant’s request moves faster with the landlord’s number in hand, and the written price goes to whoever approves it. When a system quits for good rather than needing a part, we can price what replaces it, a heat pump or a propane furnace, and the HVAC estimator shows the installed range first.
Wood is the main heat in about one owner home in thirteen, often with a furnace or heat pump standing by. Marshall has no town building office: a fuel-burning furnace, propane included, needs a Fauquier County permit when it’s replaced, even as a straight swap, and the County issues trade permits at its Courthouse Square counter in Warrenton the day you apply.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIP 20115 as a whole: every Marshall address, the village included. The Census place for the village alone has too few homes for steady figures.
What you’d notice
A furnace or heat pump that sat idle while a wood stove carried the house can show it the first night it’s needed: a dirty flame sensor, a weak capacitor, a dead thermostat battery. Run the backup for an hour in October, so you find out on a mild day.
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.
A propane furnace needs a tech who knows its gas pressure and orifices aren’t natural gas settings. We work on heat pumps, electric furnaces and propane, not oil burners, and you’ll hear that when you call, before anyone heads out.
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 by Tyler and Team. Right from pricing to performing professional installation of new Heat Pump.
Where we work
Next door to Marshall: Rectortown, Delaplane, The Plains, Orlean and Broad Run.
Questions
Three things take a minute: the thermostat is set to heat, not EM heat or off; the switch on the furnace or air handler is on; and on propane, the tank gauge isn’t near empty. Past that, the diagnostic visit at $99 finds it.
Not necessarily. Below freezing a heat pump runs long cycles by design, with the strips helping. Ice that stays on the outdoor coil for hours, cool air from the registers most of the time, or EM heat on all day are different, and worth a diagnostic visit.
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 Marshall 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.