Open 24/7 for emergencies
Heat pump replacement in Oakton runs $8,499 to $21,650 installed. About four in ten Oakton homeowners use electric heat, which here usually means a heat pump.
Price range
$8,499-$21,650
8yrs @ 7.99%
$120/mo
15yrs @ 9.99%
$91/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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One of our HVAC technicians with an electric heat strip kit, the backup heat inside a heat pump’s air handler.
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 as our heating page and the HVAC estimator, for a heat pump and air handler, 2 to 5 ton.
A heat pump system, outdoor unit and air handler, installed
$8,499 to $21,650
or $142/mo at 0% APR for 60 months
A gas furnace and air conditioner together, installed
$8,898 to $23,000
or $148/mo at 0% APR for 60 months
Diagnostic visit, when a repair may do
$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
Might it be a repair? The diagnostic visit is $99, and the tech prices the repair and the replacement side by side. Financing is available, subject to approval.
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 Oakton
Electric heat covers about 42 percent of the owner homes in ZIP 22124, and gas just under half. A heat pump shows up in the Census as electric heat, so call it roughly 2,500 Oakton owner homes on electricity. In a house here that’s usually one outdoor unit cooling through the summer and heating through the winter, backed by electric strips inside the air handler.
Electric heat isn’t spread evenly. The Oakton Census place, which takes in the condos, apartments and townhouses along Chain Bridge Road and Blake Lane, sits at about 42 percent electric. Out in Difficult Run, the big-lot area at the west end of Vale Road and Fox Mill Road where almost all the homes are detached houses, the electric share drops to about a third, with gas well ahead.
The gas half of Oakton has its own way into a heat pump. When the AC paired with a gas furnace gives out, a heat pump can sit on that same pad, cool the same way, and heat through the mild days, leaving January’s coldest nights to the burner. About four in a hundred Oakton owner homes burn propane, and a heat pump works alongside a propane furnace in just the same way. Our dual fuel guide covers the handoff.
Where the heat pump is the house’s only heat, size it for a cold Fairfax County night rather than off the old unit’s cooling label. A big two-story house on the lots north of Jermantown Road may have two, one per floor; they rarely fail together, and each gets its own price.
Neighborhood by neighborhood
Census figures for the owner-occupied homes in each place, and what that usually means for a heat pump.
| Place | Median home built | Most homes are | Heated with | What a heat pump job usually looks like |
|---|---|---|---|---|
| Oakton | 1981 | single-family houses, about 4 in 10 | gas, about 6 in 10 | 1980s and 90s gas houses, most on a second air conditioner, the part a heat pump would replace. |
| Difficult Run | 1982 | single-family houses, nearly all | gas, about 6 in 10 | 1980s and 90s gas houses, most on a second air conditioner, the part a heat pump would replace. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise. A heat pump counts as electric heat.
ZIP 22124 as a whole: every Oakton address. The Oakton Census place in the table also takes in streets with Vienna and Fairfax mail.
When it’s time
In some of the condo buildings along Chain Bridge Road the outdoor half of a heat pump may sit on the roof. Replacing it means getting a new unit up and the old one down, sometimes with a crane, on the association’s schedule. That lift belongs in the written price, not in a surprise on install day.
When the heat pump can’t keep up, the electric strips take over, and they cost far more to run. Aux heat on for hours is the sign.
It heats all winter and cools all summer, so it piles up hours an air conditioner never sees. Past 15 years, price the replacement beside any big repair.
Permits, locally
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who installs it
Questions to ask anybody who quotes you, us included.
When the heat pump is all the heat there is, the answer should be a winter number, not just the summer one. Ask how cold it can get outside before the heat pump stops carrying the house alone.
Copying the old nameplate repeats whatever guess was made when the house was built. The wrong size runs worse in both seasons.
A heat pump system is the outdoor unit plus the air handler inside. Ask whether the quote covers both, matched, in writing.
Set wrong, the electric strips run on mild days. Ask who programs the thermostat and at what outdoor temperature the strips may come on.
Two of our crew going over a work order before the day's calls.
From our Google reviews
5.0 stars across 1,132 reviews. Read them on our reviews page.
Very professional HVAC installation, knowledgeable technicians, clean work,respectful of property, punctual, conscientious.
Where we work
Next door to Oakton: Fairfax, Vienna, Reston, Dunn Loring and Herndon.
Questions
Only when the heat pump goes in where a central air conditioner was, next to a gas furnace. Washington Gas rules out heat pump for heat pump replacements, so an all-electric Oakton townhouse swapping its old heat pump won’t qualify, while a gas house trading its AC for one may. The furnace also has to clear the program’s efficiency bar.
Sized for heating, yes. It makes less heat as the weather drops, and the strips cover the gap on the coldest nights. Our heat pump winter guide explains what to expect, and a $99 diagnostic visit sorts out whether yours is worn out or just set up wrong.
$8,499 to $21,650 installed for a heat pump system, the outdoor unit and the air handler, 2 to 5 ton. A small single-stage system lands near the bottom, a big variable-speed one near the top. The HVAC estimator narrows it to your house.
A heat pump system runs $8,499 to $21,650 installed; a gas furnace and air conditioner together, $8,898 to $23,000. No gas line usually means a heat pump. With gas, you can keep the furnace and add one; our heat pump vs gas furnace guide runs the numbers.
Ready when you are
Call, or send the form at the top. The price is in writing before the old unit comes out, 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
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Oakton 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.