Open 24/7 for emergencies
Putting a new furnace and AC into a Calverton house runs $8,898 to $23,000 installed. Winter does the harder work here.
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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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
$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 Calverton
Calverton’s own ZIP, 20138, is post office boxes only, so the Census figures come from 20119, the Catlett ZIP that holds 105 of the Calverton place’s 120 housing units. It counts 1,040 owner homes, listed as detached houses, with a median build year of 1990. A house from 1990 has been through thirty-six summers, more than two air conditioner lifetimes. The quarter built since 2000 are the newest, and the earliest of those are twenty-six now, old enough that the builder’s furnace and outdoor unit are at the end of a normal run.
The fuel picks the system. Electric heat, the main fuel in about half of the 1,040 owner homes in 20119, points to a heat pump system, which runs $8,499 to $21,650. Nearly three in ten burn propane, which makes a furnace with a matching air conditioner the usual pairing; a furnace alone, keeping the AC, is $4,285 to $14,040. The Census finds none on utility gas. About one in eight lists wood or another fuel, and a house that leans on a stove still needs a furnace or heat pump for the hours the stove goes unfed.
Size the heat first. The Warrenton 3 SE weather station, six miles west-northwest of the village, averages about 4,700 heating degree days a year against about 1,000 for cooling, and logs 98 nights at or below freezing. Fauquier County’s building criteria use 17 degrees as the winter design temperature, and that station has gone well under it: 3 degrees in January 2014, 2 degrees in February 2015. Wind chills across the Piedmont ran zero to ten below in late January 2026. A heat pump quote should name what carries the house on those nights, the electric strips or a propane furnace behind it.
Then there’s the ground. The County’s village plan says an extensive floodplain runs through the middle of Calverton, and NOAA’s storm records show Bastable Mill Road closed or blocked by water four times from 2014 to 2024, at Turkey Run and near Brookfield Drive. With that history, where the new outdoor unit lands is part of the job: a raised pad, clear of a low corner and of where the roof water drops. In August 2024 a thunderstorm with winds near 64 mph blew down numerous trees near Calverton, so clearance from the limbs matters too.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Calverton’s own ZIP, 20138, is post office boxes only, so the Census Bureau maps no area for it. These are ZIP 20119 as a whole, the Catlett ZIP area that holds nearly nine in ten of the Calverton Census place’s homes.
When it’s time
Read the data plates on the furnace and on the outdoor unit. If both date from the early 2000s, they are past twenty years now, and fixing one leaves its twin waiting. Replacing only the outdoor half opens the same closet and the same line set twice, a winter apart. A tech can tell you in one visit whether the failed part is a repair or the end of the line.
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.
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.
Permits and sign-offs
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.
Fauquier County wants a permit for any fuel-fired appliance, so a gas or propane furnace replacement is permit work even in the same spot. Trade permits need no plans, and usually no zoning approval. Source.
Outside the town limits, Fauquier County issues the permit. It wants one for any fuel-fired water heater, propane included, and for any heater being moved; an electric one swapped for a similar unit in the same spot counts as an ordinary repair. Trade permits go out over the counter the day the application comes in. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who installs it
Ask every company that quotes the job, us included.
With a floodplain through the middle of the village, a condenser set low in the yard is the one standing in water after a wet week. Ask for the pad and its height in writing. In a propane house, ask too whether the gas line from the tank gets a leak test, since the tank in the yard feeds the new furnace.
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.
Furnace, outdoor unit, matching coil, refrigerant lines, thermostat, permit and hauling the old one away. If it isn’t on the paper, ask.
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
5.0 stars across 1,132 reviews. Read them on our reviews page.
SwiftPro came today to install our new HVAC system and they were fantastic. They were super courteous and well organized and kept the whole place clean and tidy the entire time. The price was reasonable and the whole experience was amazing. Highly recommend them!
Questions
We don’t work on oil burners, so we won’t swap one for another. We will price the move off oil, to a heat pump system or a propane furnace with a matching air conditioner. The Census puts about one owner home in sixteen on oil in 20119 and none on utility gas, so propane and electric are where a switch lands. The heating page shows what we install.
Fauquier County issues the permits here. For a propane furnace it wants a trade permit even when the new one goes in the old one’s spot; an electric appliance swapped for a similar one in the same spot counts as an ordinary repair, and moving anything takes a permit. Trade permits need no plans and usually no zoning approval. They come from Community Development at 16 Courthouse Square in Warrenton. If you’re not sure the system is done, the diagnostic visit is $99.
$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.
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
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 Calverton 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.