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 and heat pump repair in Reston’s 20190, 20191 and 20194, from 1970s cluster heat pumps to Town Center condos, priced from the book before work starts.
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.
Recent work
What our technicians found and fixed on visits in Reston, from their notes on each job.
September 2026
Water in the drain pan and the system shut off: the building’s shared drain line was clogged, so a new condensate trap with a float safety switch went in to stop the system before the pan can overflow.
August 2026
No cooling, from a failed run capacitor. A new dual capacitor in, and the system cooling again the same visit.
July 2026
A condo with its condenser up on the building’s roof: a failed capacitor and a pitted contactor replaced at the roof unit, a weak blower capacitor in the hallway air handler, and the drain cleared.
Who comes out
Two of the people we send, in their customers’ own words from our Google reviews. The same team covers Reston from our Chantilly shop and our Ashburn office.
Elvis repaired my hvac and was professional, courteous, knowledgeable and patient. He was able to diagnose and repair on same visit, which was a huge convenience.
Eddie came out to clean a condensate line and inspect the units. He was knowledgeable and explained everything clearly for me. Pointed out some things to consider and didn’t try to over sell anything.
What’s different in Reston
Around Hunters Woods and South Lakes, in 20191, about six in ten owner homes run on electric heat, which makes the box behind the house a heat pump more often than not. Nearly half of 20191’s homes date from the 1970s, so the one against the back wall of a cluster row is rarely the first.
In 20190, from Lake Anne to Reston Town Center and the Wiehle station, about seven in ten owners heat with gas, and the cooling is often an air conditioner paired with a gas furnace. More than half its homes are in condo and apartment buildings, and about two in ten were built in the 2000s. A system from before 2010 may hold R-22, out of production since 2020, which makes even a small leak worth pricing against a new system.
ZIP 20194, around North Point, went up almost all at once: more than eight in ten homes in the 1980s and 90s, about two thirds of them heated with gas. By now most have replaced the first outdoor unit at least once, and past 15 years is when capacitors, contactors and fan motors start to fail.
Whatever the ZIP, the outdoor unit answers to Reston Association too. In clusters and condos, RA’s guidelines put units against the house wall as a rule. Fixing the one you have keeps all of that settled. A replacement brings a Fairfax County permit, and an RA application if the new unit is taller or louder, or moves somewhere RA’s placement rules don’t allow.
Neighborhood by neighborhood
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 |
|---|---|---|---|---|
| Reston | 1981 | condo and apartment buildings, about 4 in 10 | gas, about 5 in 10 | 1980s and 90s houses, most on their second or third system. |
| Great Falls Crossing | 1993 | single-family houses, about 9 in 10 | gas, about 8 in 10 | 1980s and 90s houses, most on their second or third system. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
What you’d notice
RA can ask for a fence or shrubs to hide an outdoor unit, and its own guideline says the screen shouldn’t block service access. Built or planted too tight, it does worse: the unit breathes its own hot exhaust, the refrigerant pressure climbs, and the safety switch shuts it down on the hottest days. Trim the shrubs back, and call if it keeps quitting.
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.
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.
Choosing who fixes it
Questions worth asking anybody who comes out, us included.
RA wants no application when a new outdoor unit goes where the old one was approved, is four feet tall or less and is rated no louder. Anyone quoting in Reston should read the new unit’s size and decibel rating against the old one’s before you sign.
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 Reston: Herndon, Great Falls, Oakton, Vienna and Sterling.
Questions
In a cluster or condo home, probably not: RA’s guidelines for those homes say window units are generally not approved. The usual failures are small parts, a run capacitor among them at $240 to $370, so fixing the system you have is the better answer.
In 20191 the odds favor a heat pump, with about six in ten owners there on electric heat. The label on the outdoor unit settles it, and an Em Heat or Aux setting on the thermostat points the same way. If it is one, a summer repair should test its reversing valve and defrost board too.
Often the same day, and the office gives you the real window on the phone, before anything is booked. Reston is about eight miles up the road from our Chantilly shop, and the parts behind most no-cooling calls, capacitors and contactors among them, ride on the truck.
Yes. An AC tune-up in Reston cleans the fan, the coil and the drain line and leaves you a written report. In a cluster or condo, where a clogged shared drain can shut the system off, that drain line is the part worth checking every spring.
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 Reston 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.