Open 24/7 for emergencies
The diagnostic visit is $99, and a run capacitor replaced is $240 to $370 from our published price book.
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AC repair in Paeonian Springs, priced before we start: detached houses, a 1997 median build year, and repair-or-replace questions.
5.0 stars across 1,132 reviews
One of our HVAC technicians beside an outdoor unit at a Northern Virginia home, the vans at the curb.
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 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
or $31/mo at 0% APR for 60 months
Repair diagnostic visit
$99
Monthly figures: 60mo @ 0% APR on each starting price, the whole price financed, on approved credit. Longer plans lower the payment and cost more in total. The lender sets the final terms. How financing works
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’s different in Paeonian Springs
The median owner home in ZIP 20129 was built in 1997, and about three in four date from 1980 or later. If your air conditioner is the original, it is nearly three decades old, and a repair price needs a replacement price beside it. A run capacitor at $240 to $370 or a contactor at $290 to $425 is a small fix on a machine with years left. The same fix on a worn compressor is a bet. You get the number for each, and you decide.
A condenser from that era was built for R-22, a refrigerant that is no longer made. If the nameplate says R-22 and the system is low, adding more only buys time while the supply shrinks. About one owner home in three went up since 2000, and a leak on a newer system that uses today’s refrigerant is generally a repair, not a decision. Read the nameplate on the outdoor unit before anyone adds a pound of anything.
Hot days are when this shows. July’s average high at the Purcellville station is 86.4, and it logs about thirty days a year at 90 or above. A system limping through those days usually tells you first: it runs and doesn’t cool, the outdoor fan turns slowly, or ice builds on the line at the unit. A $99 diagnostic visit names the part, and the repair gets a price before it starts.
Storms are the other trigger. Winds on July 15, 2024 brought down wires and a few poles near Clarkes Gap Road and Hurley Lane, and on June 2, 2022 they blocked Route 7 and Hamilton Station Road. A system that won’t start once the power returns often needs a start part. A clogged condensate line can stop it too, and the water it holds is why clearing one, at $175 to $420, is worth doing before summer.
What you’d notice
A hum from the condenser with a still fan points to a failed run capacitor, $240 to $370. On a system near three decades old, the compressor deserves a look alongside it. Switch the system off at the thermostat and the breaker, and book the diagnostic instead of resetting it again and again.
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.
That’s an airflow problem far more often than a refrigerant problem: a clogged filter, a matted coil, or a blower wheel packed with dust.
Choosing who fixes it
Questions worth asking anybody who comes out, us included.
On a system from a 1997-era house, that is the honest question. Ask the tech to show you both before you approve anything. A good one gives the repair in writing and says plainly when the money is better spent on a new system. The $99 diagnostic visit is how you find out which.
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.
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.
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.
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.
Fast and efficient! Whole team was respectful of the house and got our ac running in no time!
Where we work
Next door to Paeonian Springs: Waterford, Hamilton, Leesburg, Lovettsville and Purcellville.
Questions
Start with the filter and the thermostat setting, then look outside for leaves, twigs or storm debris over the condenser. If the air from the vents is weak or warm, switch the system off so any ice can thaw, and book the diagnostic at $99. Running it iced over can do more damage than waiting.
Yes. About 35 percent of owner homes here heat with electricity, which includes heat pumps, so the outdoor unit may be doing cooling and heating both. A diagnostic is $99, and parts such as the capacitor at $240 to $370 and the contactor at $290 to $425 come from the same published book as for a central air conditioner.
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.
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.
Ready when you are
Call, or send the form at the top. 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
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 Paeonian Springs 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.