Heat pump replacement in Chantilly.
Heat pump replacement in Chantilly runs $8,499 to $21,650 installed. In 20151 more than 4 in 10 homeowners heat with electricity, mostly heat pumps.
- The installed range, published
- Sized to the house, not the old label
- Dedicated HVAC team
Get your heat pump priced
Chantilly splits on heat pumps: common in 20151, rare in South Riding.
The Census counts a heat pump as electric heat, and the two halves of Chantilly differ sharply on it. In 20151, more than 4 in 10 homeowners heat with electricity, nearly as many as heat with gas. Across the county line in South Riding it’s about 1 in 7, and in Greenbriar about a quarter.
Most 20151 houses date from the 1980s and 90s, and in the heat pump ones an air handler sits in a closet or the basement where a gas house would have a furnace, with electric strips inside it for the coldest mornings. A like-for-like replacement there is the outdoor unit and the air handler together, matched; a new outdoor unit hung on a twenty-year-old air handler rarely runs the way it was rated to.
South Riding is gas country, more than 8 in 10 homeowners, so the heat pump question there is usually dual fuel, and the rebate rules matter. Washington Gas’s dual fuel rebate is written for a heat pump that replaces a central air conditioner; swapping an existing heat pump doesn’t qualify. It’s also for Washington Gas customers only, and Fairfax County says portions of Chantilly are on Columbia Gas of Virginia instead. Our dual fuel guide has the current amounts.
The HVAC estimator prices a heat pump system when you choose heating and cooling with electric heat, and gives your house its own number inside $8,499 to $21,650. In South Riding the permit comes from Loudoun County, which counts replacing heating and cooling equipment as mechanical work; the Fairfax County rules for 20151 are below.
How the houses across Chantilly are heated.
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 |
|---|---|---|---|---|
| South Riding | 2006 | single-family houses, about 5 in 10 | gas, about 8 in 10 | Gas houses from the 2000s, where an aging air conditioner can give way to a heat pump. |
| Chantilly | 1987 | single-family houses, about 6 in 10 | gas, about 5 in 10 | 1980s and 90s gas houses, most on a second air conditioner, the part a heat pump would replace. |
Chantilly houses, 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.
20151, the Fairfax County side
20152, the South Riding side
- Median home built2006 Census
- Built before 1980hardly any Census
- Built since 2000about 8 in 10 Census
- Most homes aresingle-family houses, about 5 in 10 Census
- Heated withgas, about 8 in 10 Census
- Rentedabout 2 in 10 Census
- Most houses here burn gas, so a heat pump usually means dual fuel: it replaces the air conditioner and the furnace stays as backup.
- In a townhouse the outdoor unit sits on a small pad out back, the indoor half in a closet or attic.
What heat pump replacement costs in Chantilly.
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
- A gas furnace and air conditioner together, installed$8,898 to $23,000
- Diagnostic visit, when a repair may do$99
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.
When a heat pump in Chantilly is worth replacing.
Ice that stays on the outdoor coil
In a Chantilly winter a heat pump frosts up and clears itself every so often; that’s the defrost cycle doing its job. A coil that stays caked in ice for hours means it isn’t, and on an older unit that’s where repair or replace gets decided. The $99 diagnostic visit tells you which.
Aux heat is on all 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.
The AC quit, and you heat with gas
A heat pump can go where the air conditioner sat, heat on mild days and leave the cold nights to the furnace. That’s dual fuel.
The paperwork behind a new heat pump in Chantilly.
How to pick the best heat pump installer in Chantilly.
Questions to ask anybody who quotes you, us included.
Will the new outdoor unit sit high enough for winter?
Every defrost cycle drops meltwater under the outdoor unit. On a pad at ground level that water can freeze into a block that climbs into the coil. Ask whether the new unit goes on risers or a stand.
Did they size it, or copy the old label?
Copying the old nameplate repeats whatever guess was made when the house was built. The wrong size runs worse in both seasons.
Is the air handler in the price?
A heat pump system is the outdoor unit plus the air handler inside. Ask whether the quote covers both, matched, in writing.
Who sets up the backup heat?
Set wrong, the electric strips run on mild days. Ask who programs the thermostat and at what outdoor temperature the strips may come on.
What our customers say.
Arrived within an hour on a Sunday morning and provided great service.
Called SwiftPro around 5 am and their electronic system scheduled an appointment for us same day.
Excellent work by Tyler and Team. Right from pricing to performing professional installation of new Heat Pump.
5.0 stars across 884 Google reviews. Read them on our reviews page.
Heat pump replacement questions from Chantilly.
How can I tell if my Chantilly house has a heat pump?
Check the thermostat for an emergency or auxiliary heat setting. Then, on a cold day, stand by the outdoor unit while the heat is on: if its fan is spinning, it’s a heat pump.
Should a South Riding gas house switch to a heat pump?
Rarely all the way. With gas already in the house, the usual move is a heat pump in the air conditioner’s place and the furnace kept for the coldest nights. The time to decide is when the outdoor unit fails, not the furnace, because that’s the half a heat pump replaces.
How much does heat pump replacement cost in Chantilly?
$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.
Should I get a heat pump, or a furnace and air conditioner?
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.
More from SwiftPro in Chantilly.
More from SwiftPro in Chantilly
See the range first, then your number.
Call, or book online and pick a window. 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 is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Chantilly and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.