Open 24/7 for emergencies
Waterford AC and heat pump repair starts with a $99 diagnostic. The Purcellville station logs 30.2 days a year at 90 degrees or higher.
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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 Waterford
The Purcellville weather station, about six miles from the village, counts 30.2 days a year with highs at or above 90 degrees, and the July average high is 86.4. On July 28, 2023, weather stations across Western Loudoun measured heat indices above 110. A system that quits on a day like that needs a diagnosis the same week, and the first question is whether it is a small electrical part, like a capacitor at $240 to $370 or a contactor at $290 to $425.
The median owner home in ZIP 20197 went up in 1996, so an original central air conditioner is about thirty years old, and the label plate on the outdoor unit names the refrigerant it holds. More than one in five owner homes predates 1960. In houses that old, central air was added later, and the ducts and the indoor coil often had to be fitted around the house, not drawn into it. Tell the tech that before the visit.
About 23 percent of owner homes in ZIP 20197 heat with electricity, and the Census counts a heat pump as electric heat, so for roughly one home in four the outdoor unit works in winter too. The January average low is 24.5 degrees, and a heat pump needs its defrost cycle to clear frost off the outdoor coil. One that stays iced over needs a look, and a defrost repair is $450 to $1,150. In propane houses, the cooling coil usually shares the furnace blower, and a worn blower wheel is $300 to $440.
In the central village, Loudoun County’s Waterford Historic District has the Historic District Review Committee approve most exterior changes before work starts. A repair changes nothing on the outside, so it does not come into it. Setting the condenser somewhere new on the lot is the sort of change the committee looks at. Out near Catoctin Creek, where the water stood at 11.11 feet in August 2020, an air handler or condenser on low ground deserves a full check before it runs again after high water.
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIP 20197 as a whole: every Waterford address, the village included. The Census place for the village alone has too few homes for steady figures.
What you’d notice
That points to a run capacitor on its way out, $240 to $370. If the whole unit does nothing when the thermostat calls, the contactor is the next suspect, $290 to $425. Both are small parts, and an original 1996 system has had thirty summers of wear on them.
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.
In Waterford it changes the visit. Electricity heats about 23 percent of owner homes and propane more than half. A heat pump repair can involve the winter defrost cycle, while an AC on a furnace shares its blower. A tech who asks first knows which parts to bring and which tests to run.
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.
SwiftPro was able to schedule a repair visit that same day when our a/c was blowing warm air. They sent out a qualified technician who communicated effectively and resolved our problem quickly. He also made a few recommendations to keep our unit in working order. Thanks Jaime for the great job!
Where we work
Next door to Waterford: Paeonian Springs, Lovettsville, Hamilton, Leesburg and Purcellville.
Questions
Not a repair. The review applies to exterior changes, and fixing a capacitor, a contactor or a drain changes nothing on the outside. Moving or adding a condenser in the central village is the change to ask the committee about first.
Most often the condensate drain has clogged and backed up. Clearing it runs $175 to $420. If the air handler stands on low ground near the creek, tell the tech what the basement has seen. The creek reached 11.11 feet in August 2020, and a tech who knows that can tell drain water from creek water.
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 Waterford 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.