Open 24/7 for emergencies
A new furnace and air conditioner for a Bristow house costs $8,898 to $23,000 installed. Most 20136 homes date from 2000 to 2009, so builder pairs near twenty.
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
Send this and the office calls or texts you back to set a time.
We’ll call or text this number about your request. By sending it you agree to our terms and privacy policy.
Rather talk now? (703) 997-9757
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 Bristow
Count the homes in 20136 by the decade they were finished and one bar towers over the rest: 5,558 of 9,619 from 2000 through 2009, against 2,023 from the 1990s and 348 from everything before 1990. In Linton Hall, the subdivisions' Census place, the median owner home dates to 2004. Builders in those years set the furnace and the condenser during the same build, so a Bristow house still on its originals has two machines with identical mileage.
Two in three Linton Hall owner homes are detached, and a two-story single-family house of that vintage frequently carries a second system for the bedroom floor, its furnace or air handler up in the attic. Every system is quoted as its own line. If both are originals, get both measured on one visit, then decide which one goes this year and which waits.
On paper, the furnace is the half Prince William County cares about: gas furnace replacements always need a permit, while an outdoor unit traded for the same type on the same pad is exempt. So set the new condenser where the old one sat whenever the measurements allow. A new location pulls the county back in, and in Victory Lakes, 1,296 homes with 609 of them townhouses, the Covenants Committee reviews exterior changes before they happen.
The 1990s houses, a fifth of the ZIP, have likely replaced their first pair already, so their question is whether ducts drawn for 1995 equipment suit what goes in now. In houses of either age, a basement that got finished or a sunroom that got added is square footage the original sizing never saw, which is why we measure instead of trusting the size printed on equipment from 2004.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When it’s time
Pull the furnace’s front panel and read the condenser plate outside. Matching years mean both halves have worked every Bristow season together, and the first one to fail is fair warning about the second. Pricing them before then lets you choose the week.
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.
A new outdoor unit needs a matching coil, and on a gas system the coil sits on the furnace. If the furnace is as old, do both and open that closet once.
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.
Bigger Linton Hall houses often split the job: main floors on one system, bedrooms on another. Separate lines on the quote let you replace the worn one now and schedule the other.
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!
Where we work
Next door to Bristow: Nokesville, Manassas, Gainesville, Catharpin and Centreville.
Questions
The furnace, if it burns gas: the county lists every gas furnace replacement as permit work. An outdoor unit alone, same type on the same spot, is exempt, so for the pair, the furnace sets the paperwork.
Size comes from measuring the house, not from what sat on the pad before, and it can come out the same or smaller. A larger footprint or a new spot changes the outside of the house, which your association, Victory Lakes included, may want to review first.
$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 Bristow 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.