Open 24/7 for emergencies
AC replacement for a house or apartment in the Town of Quantico costs $5,942 to $14,450 installed, and its furnace stays.
Price range
$5,942-$14,450
8yrs @ 7.99%
$84/mo
15yrs @ 9.99%
$64/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 1,131 reviews
One of our HVAC technicians moving a new condenser up a driveway, the van behind him.
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 central air conditioner on its own, keeping the furnace you have. A single-stage unit on a small house sits near the bottom; a variable-speed one on a big house, near the top.
A central air conditioner alone, keeping your furnace, installed
$5,942 to $14,450
or $99/mo at 0% APR for 60 months
An air conditioner and furnace together, installed
$8,898 to $23,000
or $148/mo at 0% APR for 60 months
A heat pump in the AC’s place, installed
$8,499 to $21,650
or $142/mo at 0% APR for 60 months
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 before anything is ordered.
With Comfort+ membership at $199 a year, the diagnostic visit is included, and half of each repair bill is banked toward replacing that system, up to $1,500.
What’s different in Quantico
Two Quanticos share 22134. The Census counts 1,698 homes in the ZIP, 1,321 of them inside Marine Corps Base Quantico, family housing that Liberty Military Housing owns, manages and maintains. A failed air conditioner aboard the base goes to Liberty or the base Family Housing Office, and Prince William County says it doesn’t serve federal property. The Town of Quantico, about 376 homes the base surrounds on land, is where a new AC is ours to price.
Inside the Town, most homes sit in duplexes and small apartment buildings, and each unit usually has its own split system: a furnace or air handler in a closet, a condenser on a pad outside. By a small Census sample, gas heats close to six in ten of the Town’s owner homes, so when a condenser on a gas unit gives out, the new AC and coil go on the furnace already there, one unit at a time.
County address records put at least nine of the 13 homes on 5th Avenue before 1940, and central air reached houses like those decades later, its ducts run wherever they’d fit, often across the attic. A new condenser on a cramped duct path cools no better than the old one did. So the tech measures airflow at the registers before sizing anything, and a house that bakes upstairs may need a better return more than a bigger unit.
River summers pile up running time. The air station 1.6 miles away averages 29.5 days a year at 90 or above, July nights near 70.7 degrees, and a heat index that reached 118 on July 22, 2011. A condenser that rarely gets a cool night to rest racks up hours, and hours are what wear a compressor out. Set the new one where air moves freely around it and clear of limbs: the June 29, 2012 derecho gusted to 66 mph there.
When it’s time
On an older Town condenser that usually means the compressor is near the end, and out of warranty that repair tips the scale toward replacement, especially on R-22 equipment from before 2010. The $99 diagnostic visit confirms what failed before anybody prices a new AC.
It’s the pump at the heart of the outdoor unit and its costliest part. Out of warranty on an older unit, the repair can come close to half the price of a new AC, the point where Goodman says replacing may be the better money.
The Department of Energy plans on about 18 years for a central air conditioner in Virginia’s climate. Past fifteen, parts get harder to find and each repair buys less time.
Choosing who installs it
Questions to ask anybody who quotes you, us included.
In a Town apartment the furnace stands in a closet with the coil stacked on top. A coil matched to a new condenser can stand taller than the old one, so ask whether they measured the closet before quoting; if it won’t fit, the pair at $8,898 to $23,000 may be the honest answer.
Ask how they picked the size. Copying the old nameplate repeats whatever was guessed when the house was built.
The outdoor unit and the coil on the furnace are rated as a pair. Ask whether the quote replaces both, and what happens to the line set.
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 1,131 reviews. Read them on our reviews page.
Alex was very professional and the 2 technicians Oscar, and Derek was fast and efficient. They replace my A/C unit within the next day
Where we work
Next door to Quantico: Triangle, Dumfries, Woodbridge, Stafford and Lorton.
Questions
Usually the owner. Under Virginia’s landlord and tenant law, air conditioning a landlord provides is the landlord’s to keep working, and 260 of the Town’s 310 occupied homes are rented. Report the problem to your landlord; when an owner calls us, the written quote is addressed to the owner.
The County’s Building Development Division writes the Town’s trade permits, and a condensing unit traded for its own type on the same pad is ordinary repair on its list. The Town keeps its own zoning approvals, so raise any move of the condenser with both first.
$5,942 to $14,450 installed for a central air conditioner on its own, keeping the furnace you have; size and efficiency set where yours lands. An AC and furnace together run $8,898 to $23,000. The HVAC replacement cost estimator gives your house its own number.
It’s worth pricing. A heat pump cools exactly like an AC and also heats on mild days, so with your gas furnace it becomes dual fuel. A heat pump system runs $8,499 to $21,650 installed, and we’ll price it both ways.
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 AC 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 Quantico and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,131 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.