Open 24/7 for emergencies
For heat pump repair in Delaplane, the diagnostic visit is $99. Call SwiftPro, rated 5.0 stars across 1,130 reviews, at (703) 997-9757, 24 hours a day, 7 days a week.
For heat pump repair in Delaplane, SwiftPro is rated 5.0 stars across 1,130 reviews and works under Virginia Class A contractor license 2705192276. Heat pump repair in Delaplane, where propane runs most homes and a dead heat pump can hide behind a furnace that quietly keeps the house warm. A contactor runs $290 to $425 and a defrost board $450 to $1,150, from our published price book.
5.0 stars across 1,130 reviews
A Trane heat pump on its pad in a Northern Virginia winter, the kind of morning the calls come in.
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Rather talk now? (703) 997-9757
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceWe answer day or night, 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.
Repair diagnostic visit
$99
Run capacitor replaced
$240 to $370
Contactor replaced
$290 to $425
Thermostat replaced
$300 to $640
Defrost board replaced
$450 to $1,150
Control board replaced
$550 to $1,180
Prices checked .
We answer day or night, 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 Delaplane
Heat pumps are the minority out here. In ZIP 20144 the Census puts electric heat, heat pumps included, in about three owner homes in ten, and tank propane in more than half. So the usual Delaplane call isn’t a house gone cold. It’s a house with both systems, where the pump is meant to carry the mild weather and a propane furnace takes the hard cold, and the pump has been down for a month before anyone finds out.
The clue is usually the tank, not the thermostat. If the propane truck came sooner than it did last winter, or the furnace seems to start every time the thermostat so much as sighs, ask whether the outdoor unit is still doing its half. A furnace carrying the whole season works fine and costs a good deal more than the pump would have.
Nearly every house in the ZIP is detached, about half went up between 1980 and 1999, and the median owner home dates to 1986. A pump that came with one of those houses, or replaced the first one, is at the age where the capacitor, the contactor and the defrost board start giving out, and those are the repairs we find most. Lots are big, so the outdoor unit often sits in a side yard under trees, where leaves pack the coil. A June 2022 storm that hit Delaplane and Marshall is a reminder to walk around the unit for fallen limbs before the cold.
On a dual fuel system the thermostat decides when the furnace takes over. That outdoor temperature is called the balance point, and a wrong setting or a bad outdoor sensor can hand the whole job to the propane for no reason, or leave the pump struggling when the furnace should step in. It looks like a failing pump, and it’s a settings fix more often than you’d expect.
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
With a working pump and a propane furnace, the furnace should only fire on the coldest nights. If it’s running in October or on a 45 degree afternoon, the pump probably isn’t pulling its weight, and the bill is the first place you’ll see it.
When the outdoor unit stops pulling its weight, the electric strips in the air handler carry the house. The house stays warm, and the bill tells you a few weeks later. A stuck contactor is a common reason, and one of the cheapest fixes on our list.
A little frost on a cold morning is normal, and the unit melts it off every so often by running backwards for a few minutes. Ice that builds for hours and covers the whole coil usually means the defrost board, a sensor, or low refrigerant.
Need heat pump repair in Delaplane?
A person answers day and night. See this month’s deals before you call.
Choosing who fixes it
Questions worth asking anybody who comes out, us included.
In Delaplane that matters, because the two systems share a thermostat and a blower. A tech who only knows one half can blame the other. Ask for both checked together, with the thermostat’s switchover setting read out loud.
Anyone can check on the state’s license lookup. Ours is Virginia Class A contractor license, on every van.
Every heat pump repair on our list has a range, and you hear where yours lands before a part goes in. If someone can’t give you a number until it’s done, keep looking.
An older heat pump with a refrigerant leak is often a bad repair. A good tech says so, with the repair price and the replacement price side by side.
Two of our crew going over a work order before the day's calls.
From our Google reviews
5.0 stars across 1,130 reviews. Read them on our reviews page.
Excellent work done honestly and efficiently. Efrain the technician was great. Was able to diagnose the problem quickly and get my older Amana gas furnace system working again.
Where we work
Next door to Delaplane: Rectortown, Upperville, Marshall, The Plains and Orlean.
The system we put in first
Built to take a beating. Put in by our crew.
Heat lamps, snow and rain on one outdoor unit: that’s Trane’s own film. We’re a Trane Comfort Specialist, on Trane’s own dealer locator, and when you pick a Trane, our crew puts it in.
Films: Trane’s own.
Questions
Step outside while the thermostat is calling for heat. A spinning fan and warm air from the vents means the pump is working. Silence outside with a warm house means the furnace is covering for it, and that’s worth a heat pump visit before the cold sets in.
The diagnostic is $99, and it covers finding the fault, not just the first part that looks suspect. A capacitor runs $240 to $370, and a thermostat swap runs $300 to $640, so on a dual fuel house the answer is often a small repair.
That’s defrost. The unit stops the outdoor fan, runs backwards for a few minutes to melt frost off the coil, and you see steam rising. It’s normal. Ice that stays is not.
The diagnostic visit is $99. From our price book, a capacitor is $240 to $370, a contactor $290 to $425, and a defrost board $450 to $1,150. You get the number before we start.
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 system 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
SwiftPro Plumber & Water Heaters
4200 Lafayette Center Dr, Suite N, Chantilly, VA 20151
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 Delaplane and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,130 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.