Open 24/7 for emergencies
Waterford furnace and heat pump repair begins with a $99 diagnostic, and propane heats more than half the owner homes.
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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 Waterford
Propane heats more than half of the owner homes in ZIP 20197, and the Census finds none on natural gas, so a furnace repair here is usually a propane furnace. The common jobs are a flame sensor cleaned at $95 to $180, an igniter replaced at $240 to $410 and a control board at $550 to $1,180. The diagnostic comes first at $99, and the repair is priced before the tech starts it. Oil is the fuel for about one owner home in six, and we don’t work on oil burners.
The median owner home here was built in 1996, and about a third date from before 1980, so a lot of Waterford furnaces are at the age where a repair has to be weighed against a replacement. The rating plate inside the furnace door gives its year and its fuel. Read it before you approve anything big. A furnace near thirty with a failed part is a different question from one a decade younger with the same part.
The Purcellville station logs 4,942 heating degree days in a normal year, 114.7 nights at or below 32 degrees and a January average low of 24.5. In the January 2016 blizzard, western Loudoun reported 30 to 36 inches of snow. A high-efficiency furnace that vents out a side wall can end up under a drift, and a buried vent shuts the furnace down on purpose. Dig the pipes out, try the thermostat again, and call if the burners stay dark.
Swapping a gas furnace in Loudoun takes a permit, and the county dropped the plans for a swap at the same BTUs in the same spot in October 2025. Where a new furnace would change the vent on a wall people can see in the central village, Loudoun’s Waterford Historic District has its review committee look at most exterior changes first. And in a power loss a propane furnace is as dead as an electric one, because the igniter and blower both need power.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIP 20197 as a whole: every Waterford address, the village included. The Census place for the village alone has too few homes for steady figures.
What you’d notice
On most propane furnaces that is the igniter or the flame sensor. A dirty sensor is $95 to $180; a worn igniter is $240 to $410. Both are small next to a no-heat night, and the Purcellville station logs 114.7 of them a year at or below 32 degrees, so have it looked at in October, not January.
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.
Short cycling is usually a clogged filter, a thermostat in a bad spot, or a furnace too big for the house. The filter is the one to check yourself first.
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.
The plate inside the door has both. On a furnace as old as a 1996 house, that date changes what a board or a blower is worth, and a tech should read it to you first. If the plate says oil, you should hear a plain no from us up front, not after a visit is booked.
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.
The draft inducer motor on my furnace was failing. They were able to get out same day to look at it. Ordered parts and got a new one installed quickly. The technicians were on time, responsive, and well equipped. Fairly priced too. I have nothing but good things to say.
Where we work
Next door to Waterford: Paeonian Springs, Lovettsville, Hamilton, Leesburg and Purcellville.
Questions
No. About one owner home in six in ZIP 20197 burns oil, and we don’t work on oil burners. Propane furnaces, heat pumps and boilers are ours, and the diagnostic is $99. An oil house that wants out can move to a propane furnace or a heat pump system, and we price both.
Start with the diagnostic at $99, which tells you what failed. A flame sensor or an igniter is a repair on any furnace. A board at $550 to $1,180 or a blower at $670 to $2,400 is where you weigh it against $4,285 to $14,040 for a new furnace installed, keeping the AC. Then decide with both prices side by side.
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 Waterford 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.