Furnace and AC replacement in Centreville.
Replacing both the furnace and the AC in Centreville runs $8,898 to $23,000 installed. In houses from 1980 to 1999, the second pair often ages as one.
- Your price range up front
- Sized to the house, not the old label
- Dedicated HVAC team
Get your new system priced
Built 1980 to 1999, now on a second furnace and AC that age as a pair.
Centreville’s owner homes are mostly from 1980 to 1999, 69 percent of them, and the median is 1990. A builder’s furnace and air conditioner from those years usually wore out in the 2000s or early 2010s, and often the two were replaced on one visit. A pair put in together back then is roughly fifteen to twenty years old now, nearing the end of its run on one schedule. That’s the case for pricing both at once.
About one Centreville home in five went up in 2000 or later. Plenty of those still run the furnace and condenser the builder set, the oldest now past twenty years. A condenser made before 2010 most likely holds R-22, and once one of those leaks, the repair and the replacement belong on the same piece of paper.
In a townhouse, close to half of what’s here, the furnace and coil sit on the lowest level and the condenser on a small pad out back, sometimes under the deck. A new outdoor unit can be taller or wider than the one it replaces and needs open air around it, so the spot under the deck gets measured before the price is final, not on install day. An association may have rules for it, too.
Part of Centreville buys its power from NOVEC rather than Dominion, Fairfax County’s utility list says. NOVEC’s load management program puts a switch on an enrolled home’s central air conditioner that cycles the compressor ten minutes of every half hour at peak demand. If there’s one of those boxes by your outdoor unit, mention it when you book, and ask NOVEC at 703-335-0500 what it wants done with it when the old unit comes out.
Centreville houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Centreville
- Median home built1990 Census
- Built before 1980about 1 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aretownhouses, about 5 in 10 Census
- Heated withgas, about 7 in 10 Census
- Rentedabout 3 in 10 Census
- Townhouse furnaces sit in closets and attics, so the path in matters as much as the size.
- Most homes here heat with gas, so the usual pair is a gas furnace inside and an air conditioner outside, with the coil sitting on the furnace.
What a new furnace and AC costs in Centreville.
$8,898 to $23,000 installed for a furnace and air conditioner replaced together, 2 to 5 ton, from the same price book as our estimator. Where you land depends on the size of the house, the efficiency you pick, and what the ductwork and venting need.
- Furnace and AC together, installed$8,898 to $23,000
- Furnace alone, keeping your AC$4,285 to $14,040
- Heat pump system instead$8,499 to $21,650
The HVAC replacement estimator gives your house its own number. Then we measure, and the price is in writing before anything is ordered.
Two years of labor come with every install. Monthly plans are on our financing page.
When replacing both makes sense in Centreville.
The top floor never kept up, and the pair is old anyway
In a three-level townhouse the system sits on the lowest level and the bedrooms are two floors up. Replacing both halves is the moment to fix that, with the blower, the returns and the upstairs runs checked, instead of buying the same size again.
The AC died and the furnace is the same age
A new outdoor unit needs a matching coil, and on a gas system the coil sits on the furnace. If the furnace is as old, do both and open that closet once.
The outdoor unit runs on R-22
The label on its side names the refrigerant. R-22 hasn’t been made or imported in the US since 2020, so a leak gets expensive. Replace it on your schedule, not in July.
Who signs off on a new system in Centreville.
Fairfax County
Fairfax County lists replacing a heating or cooling system as mechanical permit work. Source.
Fairfax County requires a permit to replace any gas appliance, even like for like: a gas water heater, furnace or boiler. Replacing a fuel-burning appliance also needs a chimney vent certification. Source.
Fairfax County asks for an A2L refrigeration system certification with the permit for any heat pump or air conditioner that runs on the newer A2L refrigerants. Source.
How to pick who replaces your furnace and AC in Centreville.
Ask every company that quotes the job, us included.
Did they size it for the finished lower level?
If the lowest level of the house was finished after it was built, the old system was sized for a smaller house. Ask whether the quote is based on all three floors as they are today, not on the number printed on the old label.
Do they size it to the house, or copy the old label?
The old size is a guess somebody made years ago. Ask whether they measure the house and check the ductwork first. Too big short cycles; too small runs all afternoon in August.
Is the whole job in the written price?
Furnace, outdoor unit, matching coil, refrigerant lines, thermostat, permit and hauling the old one away. If it isn’t on the paper, ask.
Already holding another company’s quote?
Our free second opinion looks at the system you were quoted on and tells you what it actually needs, with our price if you want it.
What our customers say.
Alex was very professional and the 2 technicians Oscar, and Derek was fast and efficient. They replace my A/C unit within the next day
5.0 stars across 884 Google reviews. Read them on our reviews page.
Furnace and AC replacement questions from Centreville.
My Centreville house heats with electricity. Is this the right page?
Probably not. A quarter of Centreville homeowners heat electric, and in those houses the indoor half is an air handler with heat strips, not a furnace. The matching job is a heat pump system, priced in the table above.
Our AC died mid-July and the furnace went in with it. Where do we start?
Find out what failed. The $99 diagnostic visit names the problem and prices the repair, and you get the replacement range beside it to decide. If you’d rather start from your own number, the HVAC replacement estimator gives you one.
How much does a new furnace and AC cost in Centreville?
$8,898 to $23,000 installed for the pair, by size and efficiency. A furnace alone, keeping your AC, is $4,285 to $14,040. The HVAC replacement estimator gives your house its own number.
Do I have to replace both at the same time?
No. If the AC is young and only the furnace failed, replace the furnace. If they’re the same age, do both: a new outdoor unit needs a matched coil, and one built for the old refrigerant isn’t rated for the new one.
More from SwiftPro in Centreville.
More from SwiftPro in Centreville
Start with your number, then a written quote.
Call, book online, or take the HVAC replacement estimator first. We measure before we quote, and if a repair makes more sense than a new system, you’ll hear that first.
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 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.