AC repair in Dumfries.
AC and heat pump repair in Dumfries, inside the Town and out in Montclair and Southbridge, priced from our book before a panel comes off.
The diagnostic visit is $99, and a run capacitor replaced is $240 to $370 from our published price book.
- Prices in writing, first
- Common parts on the truck
- Dedicated HVAC team
Get your AC repair priced
Heat pumps in the Town and Montclair, gas furnace systems behind most Cherry Hill condensers.
About half the owners inside the Town of Dumfries heat with electricity, and in a Dumfries house that usually means the unit out back is a heat pump. It cools in July and heats in January, so a repair on one should end with a test run in heat mode as well as cooling. The 1980s were the Town’s busiest building decade, about three homes in ten, which puts a lot of these on their third outdoor unit.
The townhouse rows set the pattern. Town records date Williamstown, the largest at about 455 homes, to 1974 through 1991, Port O’Dumfries to 1974 through 1988, and South Cove to 1988 through 1992. In those rows the air handler usually lives in a closet or the attic, and the condensers line up behind the units, where a privacy fence or a deck built too close can choke the air a condenser needs to shed its heat.
Past the town line it changes by neighborhood. Montclair, three houses in four single-family with a median built in 1989, leans electric just like the Town, so heat pumps again. Cherry Hill, the Census place covering most of 22026 outside the Town, is newer, its median owner home built in 2005, and about seven owners in ten burn gas. There it’s a furnace inside and a separate air conditioner out back sharing one blower, and the first ones are reaching the age when coils and compressors start to leak.
A repair needs nothing from anybody. A replacement does, and the office follows the town line. Inside it, the Town of Dumfries runs its own building department, and its mechanical permit application has a line for AC equipment replacement, indoor, outdoor or both. In the Town’s historic district, the Town Code holds building permits until a certificate of appropriateness is approved, which matters when a new condenser goes in a new spot. Outside the line, Prince William County handles it.
What’s cooling the houses across Dumfries.
Census figures for each place, and what that usually means for the air conditioning. Median year built and heat count owner-occupied homes only.
| Place | Median home built | Most homes are | Heated with | What the cooling usually is |
|---|---|---|---|---|
| Montclair | 1989 | single-family houses, about 8 in 10 | electricity, about 5 in 10 | Mostly electric heat: heat pumps that cool in summer and heat in winter. |
| Cherry Hill | 2005 | townhouses, about 4 in 10 | gas, about 7 in 10 | Townhouse streets: condensers side by side, air handler in a closet or attic. |
| Dumfries | 1985 | townhouses, about 4 in 10 | electricity, about 5 in 10 | Mostly electric heat: heat pumps that cool in summer and heat in winter. |
Dumfries houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
The Town of Dumfries
Nearly all of the Town sits in 22026, with a sliver in Triangle’s 22172. None of it is in 22025.
- Median home built1985 Census
- Built before 1980about 4 in 10 Census
- Built since 2000about 1 in 10 Census
- Most homes aretownhouses, about 4 in 10 Census
- Heated withelectricity, about 5 in 10 Census
- Rentedabout 2 in 10 Census
- Electric heat here usually means a heat pump, so the outdoor unit works all year and an AC problem is often a heating problem waiting for January.
- Townhouse condensers sit side by side out back, so check the association’s rules before a new one goes in a different spot.
The Prince William County side
Montclair in 22025, where the Postal Service accepts Montclair as the town name; Southbridge and Cherry Hill in 22026, outside the town line.
ZIPs 22025 and 22026 as a whole: Montclair, Cherry Hill and the rest of Dumfries mail, the Town’s homes included.
What AC repair costs in Dumfries.
The same price book as our AC repair page. The diagnostic visit is $99, and the common parts ride on the truck, so most of these get fixed on the first visit.
- Run capacitor replaced$240 to $370
- Contactor replaced$290 to $425
- Condensate drain cleared$175 to $420
- Refrigerant topped up$190 to $740
- Blower wheel pulled and cleaned$300 to $440
- Refrigerant leak found and repaired$1,850 to $2,700
- 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 the cooling and heating maintenance visits are part of the membership.
What a failing AC in Dumfries usually does.
The condenser sat in high water
Parts of Dumfries are low, flat ground by the water, and the Town’s floodplain manager in Public Works can tell you whether your parcel is in FEMA’s special flood hazard area. If storm water rose over the outdoor unit, leave the breaker off until a tech has checked the wiring, the contactor and the fan motor. Starting a wet condenser can turn a repair into a replacement.
The heat pump is icing up in summer
Ice on the outdoor lines in July means low refrigerant or starved airflow. Shut it off to thaw and call; running it iced can take out the compressor.
The air coming out is warm
Usually the outdoor unit has stopped running. A hum with no fan turning is almost always the run capacitor; silence while the thermostat calls is usually the contactor.
How to pick the best AC repair company in Dumfries.
Questions worth asking anybody who comes out, us included.
Do they ask which side of the town line you’re on?
A Dumfries mailing address won’t tell you, and the Town says as much itself. It matters the day a repair turns into a replacement: inside the town the paperwork goes to Town Hall, outside it to Prince William County. A tech who asks up front won’t send it to the wrong office.
Do they publish prices?
A company that prints what a capacitor or a contactor costs has already told you the number. One that won’t say until the tech is in your driveway hasn’t.
Do they measure before they sell refrigerant?
A healthy system drops the air somewhere around 16 to 22 degrees across the indoor coil. Low refrigerant means a leak, and topping it up every summer is the expensive way to find that out.
Will they tell you when it’s the end of the road?
Some repairs aren’t worth doing on a 20-year-old system. The good answer shows you the repair price and the replacement price side by side and lets you pick.
What our customers say.
Elvis did excellent work repairing my heater and air conditioner. I couldn’t be happier!
5.0 stars across 884 Google reviews. Read them on our reviews page.
AC repair questions from Dumfries.
Do you fix air conditioners in Montclair and Southbridge?
Yes. Montclair is in 22025 and Southbridge in 22026, and the Postal Service accepts both names, but both sit in Prince William County, not the Town. Same techs, same price book, and the diagnostic visit is $99.
Does an AC repair inside the Town need anything from Town Hall?
No. A run capacitor at $240 to $370 or a cleared condensate drain at $175 to $420 is a repair, and repairs take no permit. Swapping the equipment is different: the Town’s mechanical permit has lines for an indoor unit, an outdoor unit or both, filed at Town Hall with a copy of the contractor’s state license.
How much does AC repair cost in Dumfries?
The diagnostic visit is $99. The common repairs: a run capacitor $240 to $370, a contactor $290 to $425, a condensate drain cleared $175 to $420, refrigerant topped up $190 to $740. A refrigerant leak repair runs $1,850 to $2,700.
Should I repair it or replace it?
Fix the cheap parts on almost anything. Think twice about a big repair on a system over 15 years old, and about any leak on an R-22 system. The HVAC estimator prices a new system in about a minute, so you can put the two numbers side by side.
AC repair in the towns next door.
- AC repair in Woodbridge
- AC repair in Lorton
- AC repair in Fairfax Station
- AC repair in Manassas
- AC repair in Clifton
More from SwiftPro in Dumfries
Tell us what your AC is doing.
Call, or book online and pick a window. The tech prices the repair from the book before starting, and if it’s the end of the road you’ll hear that first.
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Dumfries and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.