Heat Pump Savings Calculator in Washington
Compare heat pump and furnace heating costs in Washington. Uses local climate data (5000 HDD), electricity rates, and fuel prices for accurate savings estimates.
What Washington Residents Should Know
Washington falls in IECC climate zone 4-5B with 5,000 heating degree days per year — above the national average. Modern cold-climate heat pumps achieve an average COP of 2.6 in Washington's conditions, making them competitive with gas furnaces for most of the heating season.
With natural gas at $1.15 per therm in Washington, a gas furnace may have lower operating costs in the coldest months. However, heat pumps provide both heating and cooling in one system, which can offset the difference when you factor in AC savings. In shoulder seasons (spring and fall), a heat pump is significantly more efficient, often making the overall annual cost competitive with gas.
While Washington does not currently offer state-level heat pump incentives, the federal 25C energy efficient home improvement tax credit covers up to $2,000 for qualifying heat pump systems. This credit, combined with long-term energy savings and the dual heating-cooling functionality, makes heat pumps an investment worth evaluating for most homeowners. Enter your home details above to see your projected savings.
Avg. Electricity Rate
$0.112/kWh
Avg. monthly bill: $108
Regular Gas Price
$3.80/gal
Natural gas: $1.15/therm
Heating Degree Days
5,000
Cooling: 350 CDD
Available Incentives in Washington
| Incentive | Type | Amount | Description |
|---|---|---|---|
| Energy Efficient Home Improvement Credit (Heat Pump - 25C) | tax credit | 30% | Tax credit for installing a qualifying heat pump, heat pump water heater, or biomass stove. Covers 30% of the cost up to $2,000 per year. Can be combined with other 25C credits up to $3,200 annual limit. |
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Use our free calculator pre-filled with Washington data to see your personalized results.
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