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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Furnace and heat pump repair in Gainesville, Virginia Oaks and Heritage Hunt, with the repair priced from our book before any panel comes off.
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 Gainesville
Gas heats about eight in ten owner homes in the part of 20155 the Census counts as Gainesville, and about four in ten owner homes there were built in the 2000s. A furnace that came with one of them is around 20 now, or past it. At that age the inducer motor gets loud, the board starts throwing codes, and a blower that has run every winter and every summer starts to drag.
About three in ten were built in the 2010s, and nearly one in ten since 2020. Those furnaces are mid-life or younger, and nearly any repair on them is worth making. On the newest, find the installer’s paperwork before you pay for a part, since a furnace that young may still be inside its parts coverage.
Prince William County keeps repairs out of the permit office: fixing a furnace with replacement parts takes no permit at all. Replacing a gas or propane furnace takes one every time, like for like or not. Replacing an electric furnace or a heat pump with a like unit where the old one stood takes none, which covers the roughly one home in six here heated with electricity.
Virginia Oaks, from 1994, is older than most of Gainesville, so its houses are usually on a second furnace already, and its association lets a metal flue be replaced without an application as long as it stays on the back of the roof or the side least seen from the street. Heritage Hunt was zoned in 1997 and sits outside the area the Census calls Gainesville. Its oldest houses are past 25, so on a big repair there, the replacement number belongs on the same sheet.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
What you’d notice
A high-efficiency gas furnace makes water, and in a finished basement it often drains through a small pump to a laundry sink or floor drain. When that pump quits or its line clogs, a safety switch shuts the furnace down. Check the box beside the furnace for standing water before you call.
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
Prince William County Fire and Rescue says to have a qualified technician inspect the heating system and chimneys every year, to make sure nothing blocks the fumes from venting out of the house. Source.
Prince William County Fire and Rescue lists furnaces and water heaters among the household sources of carbon monoxide, and says to put a CO alarm outside each sleeping area and on every level of the home and to test it monthly. 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.
About one Gainesville home in six heats with electricity, usually a heat pump, and the parts on the truck aren’t the same. A company that asks first shows up ready for 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.
Elvis, my technician, was professional and quick with his repairs. He also gave me some nice tips on how to maintain my heating unit for the summer.
Where we work
Next door to Gainesville: Catharpin, Haymarket, Broad Run, Bristow and The Plains.
Questions
No. Prince William County lists repairing a furnace by installing replacement parts as work that needs no permit. Replacing a gas furnace is different: that takes one every time.
In a Gainesville house built since 2000, electric heat nearly always means a heat pump backed by electric strips. The defrost board, the reversing valve and the outdoor fan motor are the usual suspects. A heat pump that has quietly fallen back on its strips shows up in a power bill that jumps in January before anyone notices the house feels cooler.
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 Gainesville 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.