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Furnace and AC replacement in Nokesville runs $8,898 to $23,000 installed. The typical owner home in 20181 dates from 1989, and many pairs are on round two.
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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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 Nokesville
Across 20181 half the owner homes are older than 1989 and half are newer, but the middle is thin. The 1990s added only 266 homes. The 1970s and 1980s together added 1,238, and the 2000s alone added 904. So Nokesville’s furnace and air conditioner pairs arrive in two bunches, and they come due in bunches too.
In a 1970s or 1980s house the builder’s pair is long gone, and the one there now often went in during the late 1990s or the 2000s. Before deciding, find the date on each: on the furnace it’s usually on the plate behind the burner door, outside it’s on the plate on the cabinet, sometimes buried in the serial number. When the years line up, both halves are wearing out together. An outdoor unit ten years younger than the furnace usually makes a furnace alone, $4,285 to $14,040, the better buy.
The 2000s houses are where the builder’s own pair may still be running, now seventeen to twenty-six years old, and an outdoor unit that old most likely holds R-22. The 401 homes finished since 2010 are a different story: their systems are younger and mostly run on R-410A, which is still serviced, so a breakdown there is usually a repair before it’s a replacement.
Size is the other Nokesville question. Of the 3,440 homes in 20181, 2,071 count nine or more rooms, and in a house that big the load is often split between a system in the basement and another in the attic. Where the house has gained rooms since the last pair went in, the new one gets sized to today’s floor plan.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20181 as a whole: every Nokesville address, the village included.
The Census Bureau’s Nokesville place: the village and the land right around it.
When it’s time
When the cooling runs all afternoon in August, the furnace runs most of a January night, and both are past fifteen, the trouble is rarely one part. Price the pair, with the $99 diagnostic visit if one repair might still do.
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.
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
Prince William County lists any work that alters a home’s heating and air conditioning as permit work, but swapping an electric furnace, heat pump or air conditioning condensing unit for the same type of unit in the same spot is an ordinary repair that needs no permit. 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.
In an older village house the furnace blower, the outdoor unit and the well pump may share a panel that was sized decades ago. Ask whether the quote looked at the breakers and the wire the new pair needs, so a panel question doesn’t turn up on install day.
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.
Oscar and Ndung were great technicians for our HVAC install! Very knowledgeable and friendly. Would recommend them to others!
Questions
Only when the job changes something. The County’s replacement guidelines skip plan review when the new equipment uses the same fuel, has the same capacity and goes in the same location, with the ductwork left where it is. A propane or gas furnace takes a permit either way.
It’s worth pricing. A heat pump in the air conditioner’s spot cools the same way and heats through the milder part of winter, and the propane furnace takes over in the hard cold, so the tank feeds fewer hours of heat. The HVAC replacement estimator prices both for your house.
$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 Nokesville 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.