Is a Heat Pump Worth It in Hawaii?
Last updated June 27, 2026 · based on Hawaii energy prices
In Hawaii, where residential electricity averages about 41¢/kWh and natural gas about $4.5/therm, switching from a gas furnace can save roughly $350/year on heating. Hawaii has a mild heating climate, which means a heat pump runs at a seasonal efficiency (COP) near 3.6 here.
Hawaii heating cost comparison (average 2,000 sq ft home)
| System | Estimated annual heating cost |
|---|---|
| Gas furnace (95% AFUE) | $1,184 |
| Heating oil | $952 |
| Heat pump | $834 |
If you currently heat with oil, the picture is much stronger: a heat pump could save around $118/year versus heating oil at Hawaii prices. Against electric baseboard heat, a heat pump cuts heating energy use by about two-thirds, so the savings are even larger.
What this means for Hawaii homeowners in 2026
The federal heat pump tax credit expired December 31, 2025, so a 2026 install in Hawaii carries the full upfront cost unless you qualify for a state or utility rebate. Because Hawaii's climate is mild, the strongest financial case is when you're replacing both an old furnace and an aging air conditioner at once — the heat pump does both jobs with one system. With meaningful running-cost savings on top of combined heating and cooling, the payback math in Hawaii is favorable for most homes.
Hawaii rebates
Check whether Hawaii has launched its HEEHRA home-electrification rebate program (worth up to $8,000 for income-qualified households) and confirm it still has funding before counting on it — availability changes month to month. Also check your local electric utility, which may offer its own heat pump rebate of a few hundred to a couple thousand dollars. See our 2026 rebate guide for details.
Frequently asked questions
Is a heat pump cheaper to run than a gas furnace in Hawaii?
Yes, on average. At Hawaii's typical energy prices, a heat pump costs about $834/year to heat an average 2,000 sq ft home versus about $1,184/year for a 95% efficient gas furnace — roughly $350/year in savings.
Do heat pumps work in Hawaii's climate?
Yes. Hawaii has a mild heating climate, and modern cold-climate heat pumps maintain a seasonal efficiency (COP) of about 3.6 here — meaning every unit of electricity delivers roughly 3.6× as much heat.
Is there still a heat pump tax credit in Hawaii in 2026?
The federal heat pump tax credit (Section 25C) expired December 31, 2025. In 2026, check whether Hawaii's HEEHRA rebate program (up to $8,000 for income-qualified households) is live and funded, and ask your electric utility about its own rebates.
Estimates based on Hawaii average energy prices and a simplified model; your results will vary. Energy prices and incentives change frequently. Not financial advice.