Open 24/7 for emergencies
Replacing a propane or gas furnace in Nokesville runs $4,285 to $14,040 installed, keeping your outdoor unit. In 20181, propane furnaces outnumber gas ones.
Price range
$4,285-$14,040
8yrs @ 7.99%
$61/mo
15yrs @ 9.99%
$46/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
Two of our heating technicians beside a gas furnace, the cooling coil on top of it and the water heater to the right.
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 gas furnace on its own, 2 to 5 tons, keeping the air conditioner you have. A single-stage furnace in a small house sits near the bottom; a modulating one in a big house, near the top.
A gas furnace alone, keeping your air conditioner, installed
$4,285 to $14,040
or $71/mo at 0% APR for 60 months
A furnace and air conditioner together, installed
$8,898 to $23,000
or $148/mo at 0% APR for 60 months
Repair 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, at no charge, before anything is ordered.
Natural gas or propane, in a house, a townhouse or a condo, we replace them all. Oil furnaces we don’t.
What’s different in Nokesville
Roughly a third of the owner homes in 20181 burn propane or natural gas for heat, and propane is ahead, 597 homes to 459 in the Census count. In the village around Aden Road the gap is wider, about three propane homes for every natural gas one. So a Nokesville furnace swap is more often a propane job than a gas one, and the replacement gets its propane setup and a leak check before its first fire.
Keeping the outdoor half only pays when it has years left in it. Out here it’s frequently a heat pump rather than a straight air conditioner, doing most of the heating while the propane furnace waits for the hard freezes. Leave it in place and the new furnace takes on two duties: hold up the indoor coil the heat pump pushes refrigerant through, and take over the heating at the outdoor temperature the thermostat is set to hand it off. That handoff gets reprogrammed for the new furnace.
Over a third of the ZIP’s homes date from the 1970s and 1980s, which makes the furnace in one of them most likely its second or third. The 904 built from 2000 through 2009 are where original builder furnaces hang on, now 17 to 26 winters old, and a propane furnace that only lights on cold nights has still aged a full winter every year.
Village houses run older, with a 1970 median for owner homes. In a house that age the furnace may sit in a cellar corner, a crawlspace or a closet off the kitchen, venting through a metal flue up through the roof. A high-efficiency replacement exhausts through plastic pipe, most often through a side wall, and produces water that has to reach a floor drain or a condensate pump. Where that pipe exits and where that water goes belong in the written quote.
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
First the igniter, then the inducer motor, then a control board: on a builder furnace near twenty, each fix is fair and the total keeps climbing. Set the next one’s price beside $4,285 to $14,040 and choose. The diagnostic visit is $99.
A high-efficiency furnace vents out the side in plastic pipe, which can leave the water heater alone in a chimney sized for two. Ask about that before you pick a furnace, not on install day.
A house from the 2000s often runs the furnace it was built with. Around twenty years, inducer motors and control boards start to go, one after another.
Choosing who installs it
Questions to ask anybody who quotes you, us included.
In Nokesville it may be either, and it changes how the new furnace gets wired and set up. A quote that never asks leaves it to install day.
Ask how they picked the size. Copying the old nameplate repeats whatever was guessed when the house was built.
A new furnace has to work with the coil and the outdoor unit already there. Ask whether they looked at both before quoting a furnace on its own.
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 1,132 reviews. Read them on our reviews page.
Rich did a great job. We hit it off very well. He was on time, and we promptly gathered the necessary measurements. He explained all the details. He prepared the estimate while at the house. This work is for a HVAC full replacement.
Questions
Yes, without exception. The County’s own permit page says replacing a gas furnace always needs one, and propane is a fuel gas; matching the old model and spot doesn’t change that. Nokesville has no town government, so Prince William’s inspector is the only sign-off.
Usually, as long as the heat pump has life left and its coil sits properly on the new cabinet. When the two are the same age, get the pair priced too; the HVAC replacement cost estimator works out a number for your particular house.
$4,285 to $14,040 installed for a gas furnace on its own, keeping the air conditioner you have; size and efficiency set where yours lands. A furnace and air conditioner together run $8,898 to $23,000. The HVAC replacement cost estimator gives your house its own number.
Fix the small parts on almost any furnace. Past fifteen years, with a repair over a third of the price of a new one, replacing usually wins. Not sure which you’re looking at? The diagnostic visit is $99, and the tech prices the repair before starting it.
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 furnace 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 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.