Heat Pump vs Electric Resistance Heating Cost in Idaho

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In Idaho’s cold climate (effective HSPF 7.5), a heat pump cuts your heating bill by about 54.5% versus electric resistance baseboard — $924/year instead of $2032/year. Annual savings: $1108.

Heating type	kWh used / year	Cost / year
Heat pump (HSPF 7.5, COP 2.2)	7,279 kWh	$924
Electric resistance baseboard (COP 1.0)	16,000 kWh	$2032

Assumes 16,000 kWh of delivered heat per year — typical for an 1,800 sq ft home in a cold climate. Idaho’s electricity rate: 12.70¢/kWh.

20-year cost-of-ownership in Idaho

Over a typical 20-year heat-pump life, switching from resistance heat saves a Idaho homeowner about $22,152 on electricity. A typical cold-climate heat pump install runs $8,000-$15,000 — paying back in roughly 9.0 years against a $10,000 install.

How we calculated this

A heat pump’s seasonal heating coefficient of performance is HSPF ÷ 3.412. With HSPF 7.5, that’s a seasonal COP of 2.2 — meaning 2.2 units of heat delivered per 1 unit of electricity consumed. Resistance heating delivers 1-to-1.

For the same 16,000 kWh of heat per year, the heat pump needs 7,279 kWh of electricity; resistance needs 16,000 kWh. Multiplied by Idaho’s residential rate (12.70¢/kWh from the EIA), that’s the costs above.

Heating efficiency gear

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12,000 BTU ductless mini-split heat pump — single-room install
Ecobee / Nest smart thermostat — heat pump compatible
Heat pump water heater — 60–70% less than resistance
MERV 11 HVAC filters — protects the system, improves efficiency

FAQ

Does a heat pump work in Idaho’s winters?

Idaho winters get cold but heat pumps remain efficient down to 0°F or so with the right model. Look for HSPF 8+ rated units.

What about gas heating?

If you have access to natural gas, the comparison is different — at typical 2025 gas prices, heat pump and gas furnace heating costs are often within ±20% of each other in Idaho, with the exact ranking flipping based on local gas vs electricity prices. Heat pumps also do cooling (a single system, two seasons), while a gas furnace needs a separate AC.

What is the federal tax credit?

As of 2026, U.S. homeowners can claim a 30% federal tax credit (up to $2,000/year) for ENERGY STAR-rated heat pump installations, which materially shortens the payback period above.