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 Philomont, where lows reach 32F or colder on 114.7 days a year.
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 Philomont
Heat in the Purcellville ZIP area that holds Philomont splits two ways: propane warms about 42 percent of owner homes and electricity about 42 percent, with natural gas and oil about 6 percent each. So the repairs we price are propane furnaces and heat pumps, plus boilers. If you burn oil, that burner is not ours to repair; the other fuels are. Opening the cabinet starts with a $99 diagnostic visit, and any repair gets its price from the tech before a tool moves.
Winter gets a long audition. The Purcellville station counts 4,942 heating degree days and a January low averaging 24.5F, and the coldest nights of the January 2026 arctic outbreak, the 27th, 30th and 31st, fell under Extreme Cold Warnings. From the price book: $95 to $180 for a flame sensor cleaning, $240 to $410 for a new igniter, $550 to $1,180 for a control board and $670 to $2,400 for a blower motor.
Age frames the decision. The median owner home in the ZIP area dates to 2000, so a furnace original to that house is well into its third decade. About 24 percent of homes there predate 1980, and about 13 percent predate 1960. On an old furnace, the tech reads the rating plate and tells you whether the repair is worth making before the price is final, with the replacement range beside it if the numbers say so.
Outages are their own test. Snow-loaded trees and lines cut power across Loudoun County in the February 2010 storm, and trees came down, some on wires, at Snickersville Turnpike and JEB Stuart Road in June 2016. A furnace with electronic ignition cannot light without power. When the lights return and it will not start, the igniter and the control board are the first suspects.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
Philomont’s own ZIP, 20131, is post office boxes only, so the Census Bureau maps no area for it. These are ZIP 20132 as a whole, the Purcellville ZIP area Philomont sits in, the Town of Purcellville included.
What you’d notice
A click with no flame points to the igniter or the control board, and it tends to surface on the coldest night of a cold week. Philomont logged a wind chill of -9F on December 24, 2022. A repair caught in October is far kinder than one waited out in a house that is dropping toward 32F.
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
Loudoun County Fire and Rescue says to have heating equipment and chimneys cleaned and inspected every year by a qualified professional, and to keep anything that can burn at least three feet from all heating equipment. Source.
In its fall clock-change reminder, Loudoun County’s fire and rescue system tells residents to check their carbon monoxide alarms, and recommends one outside each sleeping area and on each level of the home, tested 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.
A cleaned flame sensor is a small job. A failed board on a furnace from around the 2000 median year is a decision. A good tech says which one yours is, puts the repair price in writing before starting, and shows the replacement range if the numbers point there.
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 Philomont: Middleburg, Round Hill, Bluemont, Purcellville and Hamilton.
Questions
Yes. Propane warms about 42 percent of owner homes in the ZIP area, and a propane furnace is as much our work as a natural gas one. The tank and its supplier are separate, so check the gauge first. The diagnostic visit is $99.
We do. Electricity heats about 42 percent of owner homes in the ZIP area, and the Census counts a heat pump as electric heat, so heat pump repair is part of heating repair here. Philomont’s low of -2F on January 23, 2025 is the kind of morning that finds a weak one. The diagnostic visit is $99.
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 Philomont 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.