What is the average price to install a heat pump in Northern Virginia?

What the cost sites list for Fairfax and Virginia

None of these is our price. HomeAdvisor's Fairfax, VA heat pump page gives an average of $5,727, a typical range of $4,750 to $6,933, and a low to high spread of $2,000 to $9,500. There's no date on the page.

AskDoss's 2026 guide to HVAC installation cost in Virginia prices each kind of heat pump installed. Duct replacement, when a house needs it, isn't in these ranges and adds $2,000 to $5,000.

• Single-stage heat pump, $4,500 to $7,000
• Two-stage heat pump, $6,000 to $9,500
• Variable-speed heat pump, $8,000 to $13,000

Homeyou, for Lorton gives $4,900 up to $8,200 for a heat pump installation with the unit and labor. It's undated as well.

Why two Northern Virginia houses get different prices

Start with whether the house has ducts worth keeping. If it does, a ducted heat pump can replace both the AC and the furnace. Many of the 1940s brick colonials in Westover, Lyon Village and Cherrydale got their ducts late, usually a closet air handler with returns that are too small. A heat pump moves more air at a lower temperature than the furnace did, so opening up those returns becomes part of the job.

The 1950s ramblers in Pimmit Hills are one level with short duct runs, and they take a heat pump well. Mosby Woods and the other mid-century Fairfax neighborhoods have ducts sized for the equipment of their day, and modern equipment there usually brings return work with it.

Backup heat is the electrical question. Electric strips in the air handler pull the most power and can need panel capacity the house doesn't have. If you have gas, you can keep the furnace as the backup and skip that problem. That setup is called dual fuel.

The permit office depends on the address, and Northern Virginia has several. Arlington County Inspection Services covers all of Arlington. The City of Fairfax, the City of Falls Church and the City of Alexandria each permit separately from Fairfax County, and a lot of houses with a Falls Church or Alexandria address actually sit in the county. In Old Town Alexandria and Parker-Gray, an outdoor unit you can see from the street can need Board of Architectural Review approval.

How we put a heat pump price together

We work out what the house and its ducts can carry first. Brands and efficiency ratings come after that, which is why you won't get a price per ton or per brand from us over the phone. The installation estimate is free.

We confirm the electrical load at the panel before install day. If the panel can't take it, you see that on the estimate and not halfway through the job. The estimate reaches you by text 24 to 48 hours after the walkthrough, with a link to approve it.

We aren't enrolled in any rebate or assistance program, so the price we write doesn't count on one. If you bought the heat pump yourself, we can install it. Its maker covers the equipment on its own terms, and our installation labor carries a 60 to 90 day warranty, depending on the job. The heat pump installation page walks through the install.

Where these numbers come from

We couldn't find a published figure for Northern Virginia as a whole. The Fairfax and Lorton pages are the nearest local numbers, and a 2026 statewide guide gives the breakdown by equipment.

HomeAdvisor, heat pump installation costs in Fairfax, VA shows no date. We read it in October 2026 for the average, typical range and low to high range on a Fairfax install or replacement. AskDoss, "How Much Does HVAC Installation Cost in Virginia in 2026" (2026) prices single-stage, two-stage and variable-speed heat pumps statewide and prices duct replacement apart. Homeyou, heat pump costs in Lorton, VA is undated too. We read it in October 2026, and it gives an installed range covering the unit and labor.

A HomeBlue page for Fairfax priced heat pumps by tonnage. We don't publish prices by size, so we left it out. Everything about how we price comes from our own records.