Open 24/7 for emergencies
For heat pump repair in Manassas, 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 Manassas, 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 Manassas, inside the City and out through Sudley, Yorkshire and Buckhall. We find why it quit and price the fix before any work. 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 Manassas
Count owner homes inside the City of Manassas and exactly half heat with electricity, which in houses this age nearly always means a heat pump out back. Step over the line into Prince William County and it’s still close to four in ten. That makes the first hard freeze a heat pump week here. The calls that come in are about a coil gone white, air from the vents that feels lukewarm, or a thermostat stuck flashing aux.
Nearly half the City’s homes went up between 1980 and 1999. The pump the builder set on the pad is long gone in most of them. What’s there now is usually the second outdoor unit, and plenty of those second units went in during the 2000s, when R-22 was still the standard refrigerant. That matters only for a leak. A tired capacitor or a pitted contactor is a small part on any unit, and we replace it the same way on a 2005 pump as on a 2020 one.
Power is its own story here. The City runs its own electric department, and out on the county side your service comes from NOVEC, headquartered right in Manassas, or from Dominion, depending on the street. After any of them drops out in a storm, a heat pump often waits a few minutes before the compressor tries again, and the indoor strips carry the house meanwhile. If the outdoor fan is still dead after fifteen minutes, a surge may have taken the capacitor or the control board with it.
One more City quirk. The Load Management program puts a utility switch on enrolled central air conditioners that cycles the compressor off for part of each half hour at peak demand. If there’s a City switch box mounted near your outdoor unit, tell us when you call. A compressor resting on the City’s schedule should be ruled out before anybody chases a part.
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 |
|---|---|---|---|---|
| City of Manassas | 1985 | single-family houses, about 4 in 10 | electricity, about 5 in 10 | Mostly electric heat: heat pumps, and the bill shows trouble first. |
| Buckhall | 1995 | single-family houses, about 8 in 10 | electricity, about 5 in 10 | Mostly electric heat: heat pumps, and the bill shows trouble first. |
| Sudley | 1977 | townhouses, about 4 in 10 | gas, about 6 in 10 | Mostly gas: heat pumps here often sit over a furnace. |
| Independent Hill | 2000 | single-family houses, nearly all | gas, about 6 in 10 | Heat pumps from the build, now at repair age. |
| Bull Run | 1995 | condo and apartment buildings, about 5 in 10 | gas, about 7 in 10 | Condo units: small heat pumps, owner’s to fix. |
| Yorkshire | 1984 | single-family houses, about 4 in 10 | gas, about 5 in 10 | Mostly electric heat: heat pumps, and the bill shows trouble first. |
| Loch Lomond | 1968 | single-family houses, nearly all | gas, about 7 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.
The whole City sits in ZIP 20110. It runs its own water, sewer and electric service.
Sudley and Bull Run in 20109, Yorkshire and most of Buckhall in 20111, Independent Hill in 20112, plus the county edges of 20110.
What you’d notice
A Manassas heat pump that stopped right after a storm outage and never came back usually took a hit when the power returned. The indoor blower runs, the backup strips glow, and the outdoor fan sits still. Flip the outdoor disconnect off and on once. If nothing changes, leave it and call.
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 Manassas?
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.
A capacitor can look fine and still read weak. Ask the tech to show you the reading against the rating printed on its side. On a Manassas unit that’s been through a few outages, that one number often explains a hard start.
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 service and attention to detail. James was super thorough and explained everything to me. I highly recommend them for any plumbing needs
Excellent work by Tyler and Team. Right from pricing to performing professional installation of new Heat Pump.
Where we work
Next door to Manassas: Nokesville, Clifton, Centreville, Catharpin and Fairfax Station.
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
The City’s program page offers a first diagnostic visit for an enrolled central air conditioner that isn’t working, and it doesn’t mention heat pumps. Call the City’s electric department first and ask. If they say the repair is yours, our diagnostic visit is $99 and the tech prices the fix before starting.
For a capacitor at $240 to $370 or a contactor at $290 to $425, usually yes. For a refrigerant leak on an R-22 unit, the math changes, since that refrigerant is no longer made. We’ll put the repair beside a replacement and let you choose.
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 Manassas 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.