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A new furnace and AC in the Town of Quantico runs $8,898 to $23,000 installed, for 1930s houses and apartment-building closets.
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 Quantico
The air station’s 1991 to 2020 normals show 4,002 heating degree days and 1,512 cooling degree days a year, a January average low of 28 and a July average high of 88. Both halves of a system work real seasons here. A furnace and a condenser that went in the same year have worn on the same schedule, and when both are old, replacing them together makes it one project.
More than half the Town’s 370 homes sit in duplexes and small apartment buildings, where each unit usually has its own pair: a furnace or air handler in a closet, a condenser on a pad outside. An owner with several units of the same age is looking at several aging pairs. Ask for each unit as its own written line, with both halves' ages read from the tags, so the oldest goes first.
In a house from before 1940, the ductwork came decades after the walls. County address records date at least nine of the 13 homes on 5th Avenue to before 1940. A new pair set onto the old duct path performs like the old one, so the tech measures the airflow in the rooms first and says in writing if the ducts, not the equipment, are the trouble.
Where the new condenser goes matters on this stretch of the river. The air station recorded gusts of 58 mph in February 2015 and 59 mph in February 2017, and a tree came down on Fuller Road in an August 2021 thunderstorm. Set the pad clear of overhanging limbs, with room for air around it, and the next blow has less to throw at it.
When it’s time
If the tags on the furnace and the outdoor unit give the same year and one half fails, the other has worked the same seasons. A repair on one half is a fair moment to get the pair priced, so you choose the timing instead of the next failure choosing it.
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.
A compressor or heat exchanger on a system past 15 years deserves a replacement price beside it, and you’ll get both numbers.
Permits and sign-offs
In the Town of Quantico, Prince William County’s Building Development Division issues the building and trade permits, and the Town handles its own zoning approvals. 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.
Ask for one written line per unit, showing the age of both halves. A building with several pairs of the same age seldom needs them all at once, and separate lines let the owner pick the order. If a unit is only acting up, the diagnostic visit is $99 and tells you whether repair or replacement is the better path.
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.
I would highly recommend SwiftPro for an HVAC replacement. The sales process was straightforward and fair and the installation was done to my satisfaction in a timely and complete manner (and I’m pretty demanding). Great job!
Where we work
Next door to Quantico: Triangle, Dumfries, Woodbridge, Stafford and Lorton.
Questions
No. Liberty Military Housing owns, manages and maintains the family housing aboard the base, so a dead furnace or air conditioner goes to Liberty or the base Family Housing Office. Prince William County says it doesn’t serve federal property. Houses and apartments in the Town of Quantico are the ones we price.
We don’t work on oil burners, but moving off one is ours to price. On the heat pump side the figure is $8,499 to $21,650 installed; a furnace on gas or propane paired with a new air conditioner comes to $8,898 to $23,000. Nearly two in ten of the Town’s owner homes heat with oil, by a small Census sample, so ask for both prices side by side.
$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 Quantico 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.