A storm took out an outdoor unit that was already old
A dented fan guard is cosmetic. A crushed coil or a torn line set isn’t, and on a system near twenty that’s the moment to price the pair, not the part.
Fredericksburg, Virginia
Furnace and AC replacement in Fredericksburg.
Furnace and AC replacement in Fredericksburg runs $8,898 to $23,000 installed, by size and efficiency, for Falmouth’s older gas houses or 22406’s 2000s builds.
$148/mo60mo @ 0% APR
Price range
$8,898-$23,000
8yrs @ 7.99%
$126/mo
15yrs @ 9.99%
$96/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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- Your price range up front
- Sized to the house, not the old label
- Dedicated HVAC team
5.0 stars across 1,132 reviews
One of our technicians with a new Trane outdoor unit he just installed beside a Northern Virginia house.
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
What a new furnace and AC costs in Fredericksburg.
$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
or $148/mo at 0% APR for 60 months
Furnace alone, keeping your AC
$4,285 to $14,040
or $71/mo at 0% APR for 60 months
Heat pump system instead
$8,499 to $21,650
or $142/mo at 0% APR for 60 months
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 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.
What’s different in Fredericksburg
Forty days of 90-plus and a hundred freezing nights: a Fredericksburg system works both ways.
A system on the Stafford side of Fredericksburg earns its keep in both seasons. NOAA’s 30-year normals for its Fredericksburg station, by the Rappahannock five miles south of the two ZIPs' center, count about 41 days a year at 90 or hotter and July afternoons averaging 88.5, then roughly a hundred nights at or below freezing. In a house built all at once, the two halves have been aging side by side.
That describes most of 22406. Close to two in three of its owner homes went up after 2000, the typical one in 2004, so out Warrenton Road plenty of pairs are the builder’s and nearing twenty. Stafford’s permit FAQ treats the two halves differently: an air conditioner swapped for the same type and size in the same spot is exempt, a gas-fired appliance never is. Once a gas furnace is part of the job, it’s County permit work.
In 22405 the pair often isn’t a furnace at all. About half its owner homes heat with electricity, which in these houses usually means a heat pump and an air handler, and that swap is priced as a heat pump system, $8,499 to $21,650 installed. Falmouth leans the other way: better than half its owner homes burn gas, the typical one dates from 1983, and the ductwork gets measured before anything is sized.
Western Stafford’s summer storms hit hard. The June 2012 derecho put a measured 70 mph gust through Route 17 and Poplar Road, and in August 2024 a tornado came down a mile northwest of Glendie, snapping and uprooting big trees through subdivisions. After a storm like that, look at the outdoor unit before you turn the cooling back on: a limb across the fan guard, a coil pushed in, a refrigerant line pulled loose. Shut it off at the disconnect and call us after the storm to look it over.
By the numbers
Fredericksburg houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Fredericksburg
ZIPs 22405 and 22406 as a whole: Fredericksburg mail on the Stafford County side, not the City of Fredericksburg.
- Built before 1980about 3 in 10 Census
- Built since 2000about 5 in 10 Census
- Most homes aresingle-family houses, about 8 in 10 Census
- Heated withelectricity, about 5 in 10 Census
- Rentedabout 2 in 10 Census
- Electric heat here usually means a heat pump with backup strips, which is priced as a heat pump system, not a furnace and AC.
- Many houses here still run the builder’s furnace and AC, and the two tend to wear out together.
When it’s time
When replacing both makes sense in Fredericksburg.
Your heat may not be a furnace
Where a lot of homes heat with electricity, the indoor half is often an air handler, and the like-for-like swap is a heat pump system, $8,499 to $21,650 installed.
Both halves went in with the house
Plenty of houses built since 2000 still run the builder’s furnace and AC. They wear out on about the same schedule, so when one goes, price the pair.
Permits and sign-offs
Who signs off on a new system in Fredericksburg.
Stafford County
Virginia’s building code lets a home’s mechanical appliance be replaced without a permit only when it isn’t fueled by gas or oil, so in Stafford County a gas or propane furnace swap is permit work. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who installs it
How to pick who replaces your furnace and AC in Fredericksburg.
Ask every company that quotes the job, us included.
Did they ask whether it’s a condo building?
Stafford County permits condominiums and other multi-family buildings under its commercial rules, not the house rules. In 22406, where about 1,670 homes sit in buildings of five units or more, anyone quoting should know which set applies.
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.
Two of our crew going over a work order before the day's calls.
The system we put in first
Built to take a beating. Put in by our crew.
Heat lamps, snow and rain on one outdoor unit: that’s Trane’s own film. We’re a Trane Comfort Specialist, on Trane’s own dealer locator, and when you pick a Trane, our crew puts it in.
Films: Trane’s own.
From our Google reviews
What our customers say.
5.0 stars across 1,132 reviews. Read them on our reviews page.
Excellent price and service. Had our AC/heating system replaced. Gave us a great price and top quality install. Can’t say enough good things about them.
Questions
Furnace and AC replacement questions from Fredericksburg.
Does my HOA’s approval count as the permit in Stafford County?
No. The County’s permit FAQ says an HOA’s sign-off never stands in for a building permit. The association may decide where a new outdoor unit can sit, and the gas furnace half of the job still needs Stafford County’s permit.
We heat with propane out in 22406. Is that still a furnace and AC job?
Yes. A propane furnace with an air conditioner is priced like a natural gas pair, inside $8,898 to $23,000, and the furnace is set up for propane before it’s lit. A heat pump backed by a propane furnace is worth pricing beside it.
How much does a new furnace and AC cost in Fredericksburg?
$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.
Ready when you are
Start with your number, then a written quote.
Call, send the form at the top, 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
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 Fredericksburg 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.