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Springfield’s typical owner home dates from 1968, and replacing its furnace and AC as a pair runs $8,898 to $23,000 installed.
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 Springfield
The typical owner home across Springfield went up in 1968, and close to six in ten of all homes here predate 1980. Furnaces and air conditioners each last something like fifteen to twenty years, which puts a 1968 house on its second or third set. When the last set went in on the same day, both halves have logged identical winters and summers since, and when one quits, the other is rarely more than a summer or a winter behind.
Date yours before deciding. Pull the furnace’s front panel and its rating plate shows a manufacture date, or a serial number that hides one; the sticker on the outdoor unit works the same way. If both are from the mid 2000s or earlier, every repair on either one buys less time than the last.
Kings Park, North Springfield and Ravensworth are close to nine in ten gas and mostly single-family houses, and plenty of them got central air years after they were built, on ductwork drawn for heat. The one easy time to improve that ductwork is when the furnace comes out: with the cabinet gone, the return and the filter rack can be rebuilt bigger, which plenty of these houses could use. Ask for it priced as its own line.
West Springfield, two thirds gas with close to four in ten homes townhouses, is the same job in a tighter room: furnace and coil in a basement utility room, the outdoor unit in a row out back. Newington Forest is the exception. About three in four owners there heat with electricity, so most houses there have an air handler with electric strips where a furnace would stand, and replacing that means a heat pump system, a different line on the price list.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and what that usually means for a replacement.
| Place | Median home built | Most homes are | Heated with | What the system usually is |
|---|---|---|---|---|
| Springfield | 1968 | single-family houses, about 6 in 10 | gas, about 6 in 10 | Second or third systems, often on the original ductwork. |
| West Springfield | 1972 | single-family houses, about 5 in 10 | gas, about 7 in 10 | Second or third systems, often on the original ductwork. |
| Newington | 1981 | townhouses, about 6 in 10 | electricity, about 6 in 10 | Mostly electric heat, so usually a heat pump swap instead. |
| Newington Forest | 1984 | townhouses, about 5 in 10 | electricity, about 7 in 10 | Mostly electric heat, so usually a heat pump swap instead. |
| North Springfield | 1957 | single-family houses, about 9 in 10 | gas, about 9 in 10 | Second or third systems, often on the original ductwork. |
| Kings Park | 1966 | single-family houses, about 8 in 10 | gas, about 9 in 10 | Second or third systems, often on the original ductwork. |
| Ravensworth | 1964 | single-family houses, nearly all | gas, nearly all | Second or third systems, often on the original ductwork. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When it’s time
Plenty of 1960s Springfield basements were finished long after the house was built, and the furnace ended up in a closet framed around it, with the main duct boxed into a soffit. Whatever replaces the pair must clear that closet’s door with room left to service it, and the finished rooms count when it’s sized.
An older house is usually on its third system, still on ductwork laid out for the first. We check the ducts and venting before sizing the new one.
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
Fairfax County lists replacing a heating or cooling system as mechanical permit work. Source.
Fairfax County requires a permit to replace any gas appliance, even like for like: a gas water heater, furnace or boiler. Replacing a fuel-burning appliance also needs a chimney vent certification. Source.
Fairfax County asks for an A2L refrigeration system certification with the permit for any heat pump or air conditioner that runs on the newer A2L refrigerants. 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.
In a Kings Park or North Springfield house that got its cooling later, the return is often the bottleneck. Ask whether the quote includes measuring static pressure and enlarging the return, or only setting new equipment where the old sat.
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.
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.
Where we work
Next door to Springfield: Burke, Annandale, Fairfax Station, Lorton and Alexandria.
Questions
Price it now and decide calmly. Our HVAC replacement estimator puts a range on your house first, and if something breaks before you’re ready, the $99 diagnostic visit prices the fix and a replacement side by side.
Not by default. Since those houses were built, many have had new windows, more attic insulation or a finished basement, each changing what the house needs. A load calculation sets the size, and bigger equipment on ducts drawn for heat mostly gets louder.
$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 Springfield 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.