Open 24/7 for emergencies
AC replacement in Amissville, 20106, runs $5,942 to $14,450 installed. Propane leads the heating in this ZIP, so the furnace usually 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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5.0 stars across 1,131 reviews
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 Amissville
Propane is the biggest heating fuel in ZIP 20106, about four owner homes in ten, and a propane furnace usually shares its ducts with a central air conditioner. In that house only the cooling side has to change. A new outdoor unit and its matching indoor coil go in, and the propane burner keeps its job. Electricity warms a bit over a third of owner homes, often through a heat pump, and a heat pump house takes a heat pump replacement instead, $8,499 to $21,650 for the system. Utility gas reaches about two homes in a hundred. About one in eight burns oil, and oil burners aren’t work we do.
Read the data plate on the condenser before you think about the house. The median owner home here dates to 1993, but the outdoor unit can be younger or older than the walls around it. A plate dated before 2010 points to R-22, out of production since 2020. A plate from 2010 on usually means the refrigerant that took over from it, and that one can still be serviced, so a leak on the younger unit is often a repair rather than the finish line. With about three in ten homes in the ZIP built since 2000, you could have either one. A new system arrives charged with one of the newer A2L refrigerants.
The ZIP crosses three county lines, and your county is who you’d ask about paperwork. The largest share of 20106’s homes sits in Culpeper County, about four in ten in Rappahannock County, where the village is, and a few in Fauquier County. Culpeper’s Building Department on North Main Street takes applications through its online portal or at the counter, and it wants a zoning permit before a building permit. Rappahannock’s Building Office on North Gay Street in Washington has its own trade permit form. Fauquier treats an electric unit traded for a similar one in the same spot as an ordinary repair, and a move to a new spot as permit work.
Cooling here means ordinary afternoons with a few brutal weeks mixed in. The Boston station, 10.3 miles south-southwest, averages 85.9 degrees on a July afternoon and about 22 days a year at 90 or above. Then it spikes: 100 degrees there on July 8 and 9, 2012, and heat indices past 110 across the Rappahannock zone in July 2011. An AC that limps through June gives out in a week like that. The condenser also sits out in the weather. Quarter-size hail fell northwest of Amissville in June 2023, and the June 2022 storm cluster dropped hundreds of trees in ten minutes. Keep the new one out from under big limbs.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20106 as a whole: about half its homes are in Culpeper County, about four in ten in Rappahannock County, where the village is, and a few in Fauquier County.
When it’s time
In a propane house the furnace’s blower pushes the air across the AC’s coil, so weak cooling can start on either side. Check the filter first, then stand by the condenser: a fan turning while the compressor stays silent points outdoors. With about 22 days a year at 90 or higher at the Boston station, a marginal system shows itself by July, and the $99 diagnostic tells you which side quit.
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
Fauquier County counts swapping an electric appliance for a similar one in the same spot as an ordinary repair that needs no permit. Moving an appliance to a new spot takes one. Source.
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.
Keeping the furnace means the new air conditioner borrows its blower. Ask the installer to compare the blower’s rating with the airflow the new AC is built for, and to say in writing what happens if the two don’t match. In ZIP 20106, where propane furnaces outnumber every other kind of heat, that check is what makes an AC-only swap hold up.
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.
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
Questions
That turns on which county your address sits in. Virginia’s building code lets a mechanical appliance be replaced without a permit only when it isn’t fueled by gas or oil, and an air conditioner burns neither. Fauquier County calls a like-for-like electric swap in the same spot an ordinary repair. Culpeper and Rappahannock run their own offices, so ask the one that covers your address before work starts.
Only if it’s near the end too. The new coil rides on the furnace, so an AC-only job on a worn-out furnace can be short-lived. In a ZIP whose median house dates to 1993, a furnace and AC that went in the same year are worth pricing as a pair, $8,898 to $23,000 for both. If the furnace is clearly the younger of the two, the AC alone is the sensible job.
$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 Amissville 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.