Seattle is the hardest city in our service area to quote from a phone call, and the reason is the housing. A 1912 Wallingford box with a gravity furnace, a 1958 Wedgwood rambler with original ducts, and a 2019 Columbia City townhome on a 2,000-square-foot lot are three completely different installations. Same city, same climate, same utility — wildly different scopes of work.
So here are the real 2026 numbers, organized the way the job actually varies: by how old the house is.
Seattle heat pump pricing at a glance
Seattle sits in our affluent market tier, which runs roughly 15 to 20 percent above standard Puget Sound pricing. These are installed costs including labor, materials and permits.
| Project | Seattle installed cost |
|---|---|
| ProjectDucted heat pump (full system) | Seattle installed cost$14,000 – $22,000 |
| ProjectDuctless mini-split system | Seattle installed cost$9,500 – $17,000 |
| ProjectHeat pump replacement on existing equipment | Seattle installed cost$12,000 – $19,000 |
| ProjectHeat pump repair | Seattle installed cost$175 – $1,800 |
Those are ranges, not menu prices. Where you land inside the range is decided almost entirely by the items below.
Why Seattle costs more than Kent or Auburn
The equipment is the same price in every zip code. What changes is everything around it:
- Lot width. A 1,500-square-foot south Seattle lot with a four-foot side yard means careful outdoor unit placement, sometimes wall brackets or a raised pad, and clearance planning so the unit can still breathe and still be serviced.
- Line set length. Older homes frequently put the only viable outdoor location a long way from the only viable indoor location. More copper, more labor.
- Access and staging. Street parking, no driveway, and material carried a half block is real time on the clock.
- Older housing stock. Pre-war homes need custom-fabricated sheet metal transitions, not off-the-shelf fittings.
- Noise and neighbors. Houses eight feet apart mean the outdoor unit location is a comfort decision, not just a mechanical one.
None of that is upcharge theater. It is why an honest Seattle quote looks different from a Federal Way quote for the same model number.
Pricing by home age
Pre-1940: Craftsman, box houses, Tudors
Ballard, Wallingford, Phinney Ridge, Beacon Hill, Mount Baker, Capitol Hill. These homes were built for radiators, gravity furnaces or, later, electric baseboard. Many have no usable ductwork at all, and the ducts that do exist were often added as an afterthought with octopus trunks in a 5-foot basement.
Most likely path: a ductless mini-split system. A two- to three-zone system in a 1,400 to 1,800 square foot Craftsman typically lands in the $10,000 to $14,000 range; four zones in a larger Tudor pushes toward $17,000. Our Washington mini-split cost breakdown walks through how zone count drives that number.
When ducted still makes sense: if the home already has a full-height basement with a reasonable duct trunk, or the attic is tall enough to run a compact air handler and short branches. Then you are back in the $14,000 to $20,000 ducted range.
One honest note: if you are heating with oil, the conversion is where Seattle rebate money has historically been strongest. Worth asking about before you decide anything.
1940 to 1965: mid-century ramblers and split-entries
Wedgwood, View Ridge, West Seattle, Rainier Beach, Lake City. This is the easiest heat pump house in Seattle. Forced-air ductwork already exists, the furnace sits in a garage or utility closet, and the duct layout was designed for the same airflow a heat pump wants.
Typical cost: $14,000 to $18,000 for a complete ducted system, or $12,000 to $16,000 if you are replacing an existing heat pump and the ducts check out.
The variables that move it: duct condition in an unconditioned crawl space, return air sizing (mid-century returns are frequently undersized for a modern variable-speed system), and whether the electrical panel has room for a 30 to 40 amp 240V circuit. Most do.
1965 to 1995: later infill and additions
Fewer of these in the city core, more in the north end and the far south. Generally straightforward — existing ducts, decent clearances, panels usually sized to accept the load. $14,000 to $19,000 ducted is the common landing zone.
Watch for additions. A bonus room, converted garage or dormer added after the fact is often fed by one undersized branch that never worked right. Sometimes the fix is a duct modification; sometimes it is a single mini-split head on the problem room alongside the ducted system.
1996 to today: townhomes, DADUs and infill
Columbia City, Othello, Greenwood, Delridge. Tall, narrow, tight envelopes, small loads. The good news is the heat loss is low, so the equipment is small. The challenge is physical space — no side yard, a roof deck, or an outdoor unit that has to live on a bracket or a small concrete pad in a shared alley.
Typical cost: $9,500 to $14,000 for a one- to three-zone ductless system; $14,000 to $18,000 if there is existing compact ductwork to work with. A detached ADU or DADU is usually its own single-zone system with its own circuit.
What actually moves the price inside the range
- The load calculation. Every Varsity estimate includes a Manual J run against Seattle's 24°F winter design temperature. Square footage alone does not size a system, and an oversized unit short-cycles, dehumidifies poorly and wears out early.
- Ductwork condition. Leaky, crushed or undersized ducts in a damp Seattle crawl space are the most common hidden cost. Sealing and modification is often a few hundred to a couple thousand; full replacement is a separate project.
- Zone count. On ductless, each additional head adds equipment and labor. Three heads do not cost 50 percent more than two by accident.
- Equipment tier. Good, Better and Best are presented on every proposal. Variable-speed inverter equipment costs more up front and runs quieter and more efficiently — in a house with neighbors 10 feet away, that is not a small consideration.
- Electrical scope. Most 100-amp and larger panels handle a heat pump fine. Old fuse boxes or a full panel need an electrician, which we coordinate rather than perform.
- Salt air. Alki, Magnolia and the Golden Gardens side of Ballard are exposed. Corrosion-resistant coil coatings are worth the small upcharge there.
Rebates: Seattle is Seattle City Light territory
Unlike split cities such as Renton or Burien, Seattle addresses are clean — the power bill says Seattle City Light. City Light runs its own heat pump incentives, including the Clean Heat program, which has paid $2,000 toward an oil-to-heat-pump conversion with additional funds available to income-qualified households.
Two caveats we state before every quote, not after:
- Programs change. We confirm your current eligibility and the current dollar amount before it goes on paper, then file the paperwork as part of the job.
- The federal 25C tax credit ended December 31, 2025. No 2026 installation qualifies for it. Anyone implying otherwise is behind on their homework.
The full statewide picture, including how rebates follow the meter rather than the county line, is in our Washington heat pump rebate guide.
Repair, or start over?
If you already have a heat pump and it is under about 12 years old, a repair that costs less than half of replacement is usually the right call. Typical Seattle repairs run $175 to $1,800. Where that flips is compressor failure, a leaking coil, or a third repair in two seasons — at that point you are funding a system with no remaining warranty instead of buying one with a 10-year parts and labor warranty.
We will tell you which one you are looking at. Saying "fix it" when fixing it is right is how this company gets referrals.
Permits, inspections and the boring part
Seattle requires a mechanical permit for heat pump installations, and a heat pump changeout that adds an electrical disconnect typically needs an electrical permit too. We pull them, schedule the inspection, and register the manufacturer warranty at install. Unpermitted work can complicate an insurance claim and shows up on Washington's seller disclosure form at resale, so this is not a corner worth cutting.
Get a real Seattle number
Ranges are useful for budgeting. They are not a quote. The only way to know what your house costs is a load calculation, a look at your ducts and panel, and a walk around the lot to find where the outdoor unit actually goes.
Book a free in-home estimate or call (253) 785-4622, Monday through Friday, 8 to 6. More on how we approach city-specific installs is on our Seattle heat pump page.
We are owner-operated out of Federal Way, licensed in Washington as VARSIHC766RJ, and every installation carries a 10-year parts and labor warranty. Not the cheapest bid — the one done right by people who answer the phone after the check clears.