Open 24/7 for emergencies
A new furnace and air conditioner, installed together, runs $8,898 to $23,000 in Northern Virginia, by the size of the house and the efficiency you pick. A heat pump system runs $8,499 to $21,650, and the HVAC estimator narrows either one to your house before anyone comes out.
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.
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Rather talk now? (703) 997-9757
5.0 stars across 1,131 reviews
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
Our own installed prices, the same price book as the HVAC estimator. Where your house lands depends on its size, the efficiency you pick, and what the old system leaves behind.
Furnace and AC together
$8,898 to $23,000
or $148/mo at 0% APR for 60 months
A gas furnace and a central air conditioner replaced together, as one matched system.
Heat pump system
$8,499 to $21,650
or $142/mo at 0% APR for 60 months
A heat pump outside and an air handler inside: all electric, or paired with a gas furnace for dual fuel. Heat pump replacement
Air conditioner alone
$5,942 to $14,450
or $99/mo at 0% APR for 60 months
A new central AC, keeping the furnace you have. AC replacement
Gas furnace alone
$4,285 to $14,040
or $71/mo at 0% APR for 60 months
A new furnace, keeping the air conditioner you have. Furnace replacement
Ductless mini split, one zone
$7,000 to $10,000
or $117/mo at 0% APR for 60 months
Heat and air for a room the ducts never reached. Ductless mini splits
Diagnostic visit
$99
If it might be a repair: a technician finds the fault and prices the fix and the replacement side by side.
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
Want your own number before anyone comes out? The HVAC estimator prices your house in a few questions.
What moves the price. The size the house needs, worked out from the house and not the old label. The efficiency, and whether the system runs single-stage, two-stage or variable-speed. And what the job finds: a furnace going from a chimney flue to PVC venting, a new line set, work at the electrical panel, or ductwork that needs changes. The HVAC estimator gives your house its own range, and the visit puts your number in writing.
Holding someone else’s quote? Our free second opinion: a technician looks at the system you were quoted on and tells you what it actually needs.
Which system
Most Northern Virginia houses heat with gas or with a heat pump, and plenty of them could go either way. More of our installs are heat pumps than any other system, with gas furnace and AC a close second.
| System | How it heats | Fits best when | Installed |
|---|---|---|---|
| Furnace and AC | A gas flame in the furnace; the AC cools in summer | The house has gas and you like the hot air a furnace puts out | $8,898 to $23,000 |
| Heat pump | Pulls heat out of outdoor air, with electric backup strips for the coldest hours | The house is all electric, or you want one outdoor unit doing both jobs | $8,499 to $21,650 |
| Dual fuel | A heat pump for most of the winter; the gas furnace takes over when it gets cold enough | You have gas and want both: the heat pump on mild days, the furnace for the cold snaps | Priced at your house |
| Ductless mini split | A heat pump that serves one room or zone through a wall head | An addition, a finished basement or a room over the garage the ducts never reached | $7,000 to $10,000 a zone |
The long reads: our dual fuel guide works out where a heat pump beats gas on Northern Virginia rates, and the HVAC brands guide compares the equipment.
When it’s time
Five things that usually mean the money is better spent on new equipment. A technician tells you which apply to yours, and says so when a repair makes more sense.
The Department of Energy plans on about 18 years for a central air conditioner in Virginia’s climate and 21 for a furnace, and ENERGY STAR says to weigh a replacement once an AC or heat pump passes 10.
Past that, a big repair buys time on equipment near the end of its run.
R-22 refrigerant hasn’t been made since 2020, so what’s left is scarce and expensive.
On an R-22 system, a refrigerant leak usually ends the repair road.
One part a season adds up, and every repair on old equipment is money that doesn’t carry over to the next system.
With Comfort+, half of each repair bill is banked toward replacing that system, up to $1,500.
Hot upstairs, cold in the basement, a system that runs and runs. Sometimes that’s the ducts or the airflow, not the equipment.
A technician tells you which before anyone prices a new system.
When one half fails and the other is just as old, replacing both at once usually costs less than two separate jobs a few years apart.
A new outdoor unit also has to match the coil inside, so an AC replacement often means a new coil.
How a replacement goes
Often same-day, and we will tell you honestly when we can get there. We run 24/7 emergency service when the heat or the air quits, and a replacement starts the same way a repair does: somebody looks at the house.
Someone from our HVAC team comes out and measures: the house, the ductwork, the venting, the electrical panel, where the outdoor unit sits.
Each option on paper with its installed price and its monthly payment, side by side. If a repair makes more sense, you hear that first.
The crew covers the floors and the path in, takes the old equipment out and away, and puts the new system in.
The system runs while the crew checks it, the thermostat gets set up with you, and two years of our labor is included. Five or ten years is an option.
On install day
The part of a replacement people remember is the day the crew was in the house.
Two of our HVAC installers running new ductwork through an opened ceiling, plastic hung to keep the dust in the room they’re working in.
Paying for it
What customers said
5.0 stars across 1,131 reviews. These three are about replacing a system.
…I hired them for a water heater replacement and a full HVAC replacement on a home I recently purchased that had very old, outdated equipment. From the first conversation to the final install, everything was smooth, straightforward, and stress-free. … What stood out the most was that they never tried to sell me on anything I didn’t need. They took the time to understand my situation, explain my options clearly, and help me make decisions that actually made sense for my home.…
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…
…After getting several quotes for a new Trane dual-fuel HVAC system, we chose SwiftPro HVAC, and the entire experience was exceptional from start to finish. … He explained the benefits of a dual-fuel system clearly and patiently, without any high-pressure sales tactics.…
Shown as written on Google, cut to the part about the job. Read them all.
Who installs it
No subcontracted install crews: the estimate, the install and any call after it are SwiftPro.
The SwiftPro team in front of our wrapped vans at the Chantilly shop.
Where we work
Out of Chantilly and Ashburn, across six counties. Pick your town for its furnace and AC replacement page: the same prices, plus what’s different about the houses there.
Asked at the estimate
A gas furnace and central air conditioner replaced together run $8,898 to $23,000 installed, and a heat pump system $8,499 to $21,650. Where yours lands depends on the size of the house, the efficiency you pick, and what the job needs, like new venting or a new line set. The HVAC estimator narrows it to your house. From about $148 a month at 0% APR for 60 months, the whole price financed, on approved credit. How financing works
If they’re about the same age, usually yes. One visit, one install, a matched system, and it costs less than two separate replacements a few years apart. If one half is young, replacing only the old half can make sense, and we’ll price it both ways.
Both work here. A heat pump heats and cools with one outdoor unit on electricity, with backup strips for the coldest hours. A gas furnace puts out hotter air and pairs with an AC for summer. Dual fuel gives you the heat pump for most of the winter and the furnace for the cold snaps. Our dual fuel guide runs the numbers on Northern Virginia gas and electric rates.
The Department of Energy plans on about 18 years for a central air conditioner in Virginia’s climate, 15 for an air-source heat pump and 21 for a furnace. Trane, Carrier and Lennox put most furnaces at 15 to 20 years. Yearly maintenance stretches it; clogged filters and a system sized wrong shorten it.
Washington Gas pays $500 back on a new furnace rated 95.1 to 96.9 percent AFUE and $700 at 97 percent and up, for its Virginia customers, and we’re in its contractor network for furnaces. The federal tax credit ended for anything installed after 2025.
Virginia is in the Department of Energy’s Southeast region, where a new split air conditioner has to be at least 14.3 SEER2, or 13.8 SEER2 for the biggest residential sizes. A new heat pump needs 14.3 SEER2 and 7.5 HSPF2.
Yes, on approved credit. The monthly figures on this page are the plans the estimator uses, and you can see yours on the financing page or at the estimate.
Ready when you are
Call, or send the form at the top and the office calls or texts you back to set a time. The price is in writing before anything is ordered, and if a repair makes more sense, 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
Prices are SwiftPro’s own installed prices in Northern Virginia, from the same price book as the HVAC estimator; yours is written down before anything is ordered. Rebate terms are the utilities’ and change; they’re as read in October 2026. Lifespans as the Department of Energy, ENERGY STAR and the manufacturers publish them, read in October 2026. Trane, Rheem and Carrier are trademarks of their owners.
Real jobs in Northern Virginia homes, filmed by our own crew. Tap one to watch.
0:20HVAC Installation Time Lapse: Fast Clip, Careful Furnace Swap
0:25The AC Replacement Process, From Recovery to Startup
0:40Air Handler Replacement After Dark: Three Techs, a Tight Fit
0:38Duct Transition: How a Wider New Furnace Meets the Old Ductwork
0:33Trane AC Installation, From Open Van Doors to Gauges On
0:17AC Startup Procedure: Weighing In Refrigerant on a New Trane System