Heat pump cost in Washington

Energy bills compared

Expect to pay roughly $200 a year more with the heat pump; it makes most sense if your AC needs replacing too.

14.4¢/kWh (EIA, July 2026 YTD); gas $1.61/therm (EIA 2025, $17.62/Mcf at 1,096 Btu/ft³). Energy only; estimates.

Winter performance

Here heating dominates, so winter efficiency decides the outcome. Dec's degree days imply a monthly mean near 37°F (rough approximation); standard heat pumps lose capacity in deep cold and lean on electric backup, so our HSPF2 figures are optimistic here and a cold-climate model is the safer pick. The numbers behind that: 5,610 heating and 183 cooling degree days a year (NOAA nClimDiv).

Size for the winter load and confirm cooling isn't far oversized, or keep a furnace for the coldest days (dual fuel).

Upfront price

Tier to price first in Washington: 18–19 SEER2 / 9–10 HSPF2, roughly $11,000–$18,000+ installed (national estimate). Across all efficiency levels, a 2,000 sq ft home typically runs $10,000–$20,000+. No state-specific price data exists in our sources.

Source: HomeGuide, “How much does a heat pump cost?” (2026).

Washington by month

Washington heat pump FAQ

Heat pump price in Washington?

$10,000–$20,000+ installed for a 2,000 sq ft home, per HomeGuide's national figures.

When does a heat pump win in Washington?

About 12.7¢/kWh for a 7.5 HSPF2 heat pump against a 95% furnace at $1.61/therm; prices would need to fall about 1.7¢ from Washington's 14.4¢ average. A 9.5 HSPF2 unit would heat for $1,347 a year.

Does the 25C credit still apply?

No. Per the IRS, the Energy Efficient Home Improvement Credit (25C) covered improvements made through December 31, 2025, at 30% up to $2,000 a year for heat pumps, with a QMID requirement for 2025 property. IRS: Energy Efficient Home Improvement Credit.

Will a heat pump keep up in a Washington winter?

Standard units lose capacity in deep cold; with 5,610 heating degree days, choose a cold-climate model or keep gas backup.

Regional comparison