Open 24/7 for emergencies
AC replacement in Centreville runs $5,942 to $14,450 installed, and with gas heat in close to three in four owner homes, the furnace stays.
Price range
$5,942-$14,450
8yrs @ 7.99%
$84/mo
15yrs @ 9.99%
$64/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
Get your price in writing
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One of our HVAC technicians moving a new condenser up a driveway, the van behind him.
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 our estimator runs on, for a central air conditioner on its own, keeping the furnace you have. A single-stage unit on a small house sits near the bottom; a variable-speed one on a big house, near the top.
A central air conditioner alone, keeping your furnace, installed
$5,942 to $14,450
or $99/mo at 0% APR for 60 months
An air conditioner and furnace together, installed
$8,898 to $23,000
or $148/mo at 0% APR for 60 months
A heat pump in the AC’s place, installed
$8,499 to $21,650
or $142/mo at 0% APR for 60 months
Diagnostic visit, if it may be worth fixing
$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
The HVAC replacement cost estimator narrows it to your house. Then a tech measures, and you get the installed price in writing before anything is ordered.
With Comfort+ membership at $199 a year, the diagnostic visit is included, and half of each repair bill is banked toward replacing that system, up to $1,500.
What’s different in Centreville
Centreville went up fast between 1980 and 1999, about seven in ten of its homes, with a median of 1990. A builder’s air conditioner from those years would be well past the roughly eighteen years federal energy planners use for a central AC here, so the condenser behind most houses is likely the second one, put in sometime in the 2000s or 2010s. That date matters. A unit installed before 2010 most likely holds R-22, a refrigerant out of production since 2020; one installed after runs on a refrigerant that can still be serviced, and may be worth fixing.
Close to half the homes are townhouses, and the typical one cools three floors from the bottom: furnace and coil on the lowest level, condenser on a small pad out back, often under or beside the deck. A new condenser can stand taller or wider than the old one and needs open air around it, so the spot under the deck gets measured before the price is final. The coil on the furnace changes with it, because a new A2L condenser and an old coil aren’t a rated match. Fairfax County files the job as mechanical permit work.
The rest of Centreville divides two ways. About three in ten homes are single-family houses, and the bigger ones often cool the bedroom floor with a second system in the attic. About one home in seven is in a condo or apartment building, where the condenser may sit on a roof, a balcony or a pad shared with the neighbors, and the condo documents say whether it’s yours to replace and what the association allows outside. A little over a quarter of homes are rented, and there the landlord makes the call.
Part of Centreville buys its electricity from NOVEC instead of Dominion, Fairfax County’s utility list says, and that reaches the air conditioner directly. NOVEC’s load management program puts a switch on an enrolled home’s central AC that cycles the compressor off ten minutes in every half hour when demand peaks. If there’s one of those boxes on the wall by your outdoor unit, tell us when you book, and ask NOVEC what it wants done with the switch when the old condenser comes out.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When it’s time
Cold air starts on the lowest level of a Centreville townhouse and has two flights of ductwork to climb before it reaches the bedrooms. When the AC is old and the top floor still runs warm, a bigger condenser rarely fixes it. Replacement is the time to check the blower setting, the returns and the upstairs runs, so the new unit’s air gets where you sleep.
An air conditioner put in before 2010 most likely holds R-22, which hasn’t been made since 2020. A leak on one of those usually ends the repair road.
It’s the pump at the heart of the outdoor unit and its costliest part. Out of warranty on an older unit, the repair can come close to half the price of a new AC, the point where Goodman says replacing may be the better money.
Permits, locally
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who installs it
Questions to ask anybody who quotes you, us included.
In the parts of Centreville on NOVEC power, an enrolled house has a load management switch near the condenser. An installer who spots it at the estimate plans the wiring and the call to NOVEC into the job; one who doesn’t finds it on install day. If you know yours is there, say so up front.
Ask how they picked the size. Copying the old nameplate repeats whatever was guessed when the house was built.
The outdoor unit and the coil on the furnace are rated as a pair. Ask whether the quote replaces both, and what happens to the line set.
A good company puts the repair price next to the replacement range and lets you choose. Already holding somebody’s big number? Take the free second opinion first.
Two of our crew going over a work order before the day's calls.
From our Google reviews
5.0 stars across 1,131 reviews. Read them on our reviews page.
Tyler from SwiftPro is very knowledgeable and professional on HVAC. Tech Edis and Rony are very professional and done good job to install AC
Questions
Quite possibly. About one Centreville home in five was built in 2000 or later, and plenty of those still run the condenser the builder set, the oldest of them past twenty summers now. New systems were still going in with R-22 until 2010, so read the refrigerant off its label. If it still cools, a repair can make sense; once it leaks or the compressor goes, get the repair price and the replacement range on one page.
No. In the bigger Centreville houses, the attic system for the bedrooms and the one for the lower floors are separate air conditioners, each with its own condenser and coil, and each can be replaced on its own schedule. If they went in the same year and one has failed, price both, since the second usually isn’t far behind.
$5,942 to $14,450 installed for a central air conditioner on its own, keeping the furnace you have; size and efficiency set where yours lands. An AC and furnace together run $8,898 to $23,000. The HVAC replacement cost estimator gives your house its own number.
It’s worth pricing. A heat pump cools exactly like an AC and also heats on mild days, so with your gas furnace it becomes dual fuel. A heat pump system runs $8,499 to $21,650 installed, and we’ll price it both ways.
Ready when you are
Call, or send the form at the top. A tech measures the house and puts the installed price in writing before anything is ordered, and if the old AC is worth fixing, 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 Centreville and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,131 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.