Open 24/7 for emergencies
Heat pump replacement in The Plains runs $8,499 to $21,650 installed. About six in ten 20198 homeowners heat with electricity, usually 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 The Plains
Electric heat is the norm in 20198: the Census counts 349 of the ZIP’s 589 owner homes heating with electricity, which out here usually means a heat pump doing the heating all winter and the cooling all summer. It’s the hardest working machine on the property.
Fauquier County sizes heating to a 17 degree winter design night, and NOAA’s normals station near Warrenton, 12 miles south, averages a January low just under 25 with close to five nights a year at 10 or below. A heat pump’s output drops as the air gets colder, so below a certain temperature the heat strips in the air handler, or a propane furnace, make up the difference. Size the heat pump to the heating load and the backup to what’s left on the coldest night.
A station listed as The Plains logged wind chills of minus 6 on February 1, 2026 and minus 5 a week later. Wind chill describes skin, though; a heat pump only feels the air temperature. With about 98 nights a year at or below freezing, the outdoor coil frosts often and clears itself on a defrost cycle: the fan stops, steam rises, then it carries on. A unit sheathed in ice that never clears is the problem.
Set the new outdoor unit up high. NWS estimated 24 to 36 inches across northern Fauquier in the January 2016 blizzard, and a February ice storm left up to three tenths of an inch. A unit on a stand clears the drifts and drains its defrost water away instead of freezing it under the coil.
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 20198 as a whole, the Town included: its own homes are too few for steady Census figures.
When it’s time
Above freezing, a healthy heat pump should carry the house mostly on its own. If the backup strips run most of the time at 35 or 40 degrees, the heat pump may be low on refrigerant or worn out, and a $99 diagnostic visit finds out which.
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
Fauquier County counts swapping an electric appliance for a similar one in the same spot as an ordinary repair that needs no permit. Moving an appliance to a new spot takes one. Source.
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.
That’s the balance point. Ask for it in writing, along with how much backup heat covers the gap down to Fauquier’s 17 degree design night. A quote with only a tonnage on it skipped that step.
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.
Oscar and Ndung were great technicians for our HVAC install! Very knowledgeable and friendly. Would recommend them to others!
Where we work
Next door to The Plains: Broad Run, Haymarket, Rectortown, Marshall and Gainesville.
Questions
Fauquier County treats an electric appliance replaced with a similar one in the same spot as an ordinary repair. Move the outdoor unit and the County wants a permit. Inside the town limits the County still handles the trade side, and the Town’s Architectural Review Board covers changes to the outside of a house in its Historic District.
Nothing until the power is back or a generator runs it, and storms like the March 2018 nor’easter bring trees and wires down across Fauquier. Heat strips need a large generator; a propane furnace’s blower and controls draw far less. If there’s already a propane tank, ask us to price a heat pump paired with a propane furnace too.
$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 The Plains 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.