Open 24/7 for emergencies
AC repair in the Town of Quantico starts with a $99 diagnostic visit, and the fix is priced from our book, in writing, before any work begins.
Get your price in writing
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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 Quantico
The nearest long-term weather record is the Marine Corps air station’s, 1.6 miles south-southwest of the Town on the same shoreline. Its 1991 to 2020 normals put a July afternoon at 88 degrees and roughly 30 afternoons a year at 90 or more. The figure that matters more to an air conditioner is the July night, which averages close to 71. With no cool night to rest in, the outdoor unit keeps running into the evening for weeks, and the parts that wear with running time, the capacitor, the contactor and the fan motor, wear faster.
Prince William County’s address records date at least nine of the 13 homes on 5th Avenue to before 1940, and two houses on 3rd Avenue to 1918. Nobody built for central air then. When it came, decades later, the ducts went wherever a carpenter could fit them, often across the attic over the top floor, with one return doing the work of several. A Town house that cools the downstairs and bakes the bedrooms usually has an air path problem, so we measure the airflow before anybody talks refrigerant.
Most Town homes are rented: 281 of the 323 occupied ones at the 2020 Census. Potomac Avenue alone has 45 apartment addresses in the County’s records, and in buildings like those the cooling usually belongs to the owner. If you rent, tell your landlord first; if the owner books us, the price goes to them in writing. Base housing is separate. Liberty Military Housing owns and maintains the family homes aboard Marine Corps Base Quantico, so a dead air conditioner there goes to Liberty or the base Family Housing Office, not to us.
Storms hit this stretch of the river hard. NOAA’s Storm Events database logs a 66 mph gust at the air station in the June 29, 2012 derecho, on an afternoon when heat indexes there already ran 110 to 114, and a tornado the station’s weather observer saw over wooded base land near Brown Field on April 27, 2011. In August 2021 a thunderstorm dropped a tree on Fuller Road, the Town’s way out to Route 1. Once a storm passes, walk out to the condenser before you switch the cooling on again: limbs in the fan, a crushed grille, the disconnect box hanging loose. If anything looks wrong, leave its breaker off and call us.
What you’d notice
On a muggy river night that’s often the thermostat’s fan switch. Set to On, the blower keeps running after the cooling stops and blows the water off the indoor coil back into the house. Set it to Auto. If it’s already on Auto, the system may be too big for the house, cooling it so fast it shuts off before the air is dry.
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.
Every vehicle bound for the Town passes the Fuller Road gate, and everyone inside shows credentials. A company that hasn’t planned for that can lose a morning there while your house heats up. Mention the Town when you book, and we’ll settle how the van gets through before the day of the visit.
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.
Excellent experience from beginning to end. Prompt response when our AC went out on a 93-degree day. The technician explained the issues and did not try to upsell me on anything I didn’t need. Highly recommend.
Where we work
Next door to Quantico: Triangle, Dumfries, Woodbridge, Stafford and Lorton.
Questions
No. Prince William County issues the trade permits inside the Town, and its permit guide lists fixing an air conditioner with replacement parts as work that needs none. Trading a condensing unit or a heat pump for the same type in the same spot counts as ordinary repair too. A different kind of system, or a new spot for it, is permit work.
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 Quantico 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.