Open 24/7 for emergencies
For heat pump repair in Haymarket, 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 Haymarket, SwiftPro is rated 5.0 stars across 1,130 reviews and works under Virginia Class A contractor license 2705192276. We cover heat pump repair in Haymarket, from the old town streets to Dominion Valley and Piedmont. We find the fault and price the fix in writing before we start. 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.
Get your price in writing
Send this and the office calls or texts you back to set a time.
We’ll call or text this number about your request. By sending it you agree to our terms and privacy policy.
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 Haymarket
Most Haymarket houses burn gas, which makes the ones with a heat pump easy to overlook until January. Inside the town limits about 36 percent of owner homes heat with electricity, and a bit under a quarter do across the whole 20169 ZIP. Those homes tend to be the townhouse rows and the older builder-grade houses, and the owners usually call once the heat quits and the electric bill doesn’t.
Age tells you what to expect. The typical owner home in town dates to 1995, so a heat pump that came with the house has either been replaced once already or is running on borrowed time, and a 1990s unit very often holds R-22. The ZIP around town is far younger: nearly eight owner homes in ten went up since 2000, which puts most Dominion Valley and Piedmont pumps in the years when capacitors, contactors and defrost boards start to fail. Variable-speed models from the last decade fail on a sensor or a board far more often than a mechanical part.
The town lists two electric companies, Dominion and NOVEC, and that matters on one particular call. After a storm outage, a heat pump that won’t restart is rarely the utility’s fault; it’s usually a tripped breaker, a low-voltage fuse on the air handler, or a thermostat that lost its settings. Walk through those three first and it saves a visit about half the time.
A house with a heat pump on the gas side of town often has a gas furnace as the backup instead of strips, which changes what we check. If the furnace takes over below a set temperature and never does, the switchover setting or the outdoor sensor is the suspect. We read both before touching refrigerant. If your gas furnace is the one acting up, the Haymarket furnace repair page covers that side.
Neighborhood by neighborhood
Census figures for each place, and what that usually means for a heat pump. Median year built and heat count owner-occupied homes only.
| Place | Median home built | Most homes are | Heated with | What that means for a heat pump |
|---|---|---|---|---|
| Bull Run Mountain Estates | 1978 | single-family houses, nearly all | electricity, about 4 in 10 | A mix of heat pumps and furnaces. |
| Haymarket | 1995 | single-family houses, about 6 in 10 | gas, about 6 in 10 | Mostly gas: heat pumps here often sit over a furnace. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
Inside the town limits only, about one in eighteen of the owner homes with Haymarket mail. Dominion Valley, Piedmont and Bull Run Mountain Estates sit outside it, in the county.
ZIP 20169 as a whole: every Haymarket address, the Town’s homes included.
What you’d notice
On a dual setup the heat pump should carry the house down to a chosen cold point. If your furnace is running on a mild 40 degree day, the heat pump is being skipped, and you are paying gas rates for heat the pump should have made.
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.
In a newer two-story house on one heat pump, the top floor lagging a few degrees can be ducts or the thermostat’s settings, not a failing unit. We check the system first and tell you which it is.
Need heat pump repair in Haymarket?
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 Haymarket it can be either, and each fails in different places. A tech who goes straight to the refrigerant gauges without asking what the backup is hasn’t yet worked out which half of your system is the problem.
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 Haymarket: Catharpin, Broad Run, The Plains, Chantilly and Centreville.
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
Not if it’s making noise or short-cycling. A $99 diagnostic visit tells you whether a $240 to $370 capacitor or a $290 to $425 contactor is behind it. A cheap part caught early beats a compressor failure in a cold snap, and if the numbers say replacement is closer, we show you both side by side.
After power returns, give the system a few minutes before touching the thermostat; many units wait several minutes before the compressor restarts. If nothing starts in ten minutes, check the breaker, then the switch on the air handler, then call.
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 Haymarket 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.