Heat pump vs Furnace in Maui County, Hawaii
When a heat pump makes sense
This is the right call for almost anyone in Maui County. Nights here average 59°F even in the coldest months, well within what a standard heat pump handles without trouble, and you get cooling from the same system the rest of the year. It costs about 15% less to run than natural gas heat at Hawaii prices, and with barely any real heating load here, you're mostly paying for the air conditioning anyway.
When a furnace makes sense
A furnace makes sense if you already have one in place and gas service run to the house. It only heats, so you'd still need something separate for cooling, and it costs more to run here than a heat pump does. Almost no one in the county heats with gas, which tells you how rarely a furnace is actually the better fit.
When a heat pump makes sense
This is the right call for almost anyone in Maui County. Nights here average 59°F even in the coldest months, well within what a standard heat pump handles without trouble, and you get cooling from the same system the rest of the year. It costs about 15% less to run than natural gas heat at Hawaii prices, and with barely any real heating load here, you're mostly paying for the air conditioning anyway.
When a furnace makes sense
A furnace makes sense if you already have one in place and gas service run to the house. It only heats, so you'd still need something separate for cooling, and it costs more to run here than a heat pump does. Almost no one in the county heats with gas, which tells you how rarely a furnace is actually the better fit.
Heat pump
- Runs on
- Electricity
- What it does
- Heats and cools
- Tax credit
- No federal tax credit since the end of 2025
Sources: U.S. Department of Energy · Internal Revenue Code
Furnace
- Runs on
- Natural gas
- What it does
- Heats only
- Tax credit
- No federal tax credit since the end of 2025
Sources: U.S. Department of Energy · Internal Revenue Code
Heat pump wins in Maui County.
Winter nights here only drop to about 59°F, so a heat pump keeps up easily, and it costs less to run than gas.
If your home already has a gas line and you want heating only, without needing the cooling side, a furnace still has a place.
Find a contractor| Compared on | Heat pump | Furnace |
|---|---|---|
| Cost to run here | About 15% less to run | Costs more to run |
| What it does | Heats and cools | Heats only |
| Homes in the Pacific states that heat with one | 4.8% | 56.9% |
| Handles a 59°F night | Standard models lose heating power in the cold; cold-climate models are built for it | Yes |
Sources: U.S. Energy Information Administration, U.S. Department of Energy, NOAA
When a heat pump makes sense
This is the right call for almost anyone in Maui County. Nights here average 59°F even in the coldest months, well within what a standard heat pump handles without trouble, and you get cooling from the same system the rest of the year. It costs about 15% less to run than natural gas heat at Hawaii prices, and with barely any real heating load here, you're mostly paying for the air conditioning anyway.
When a furnace makes sense
A furnace makes sense if you already have one in place and gas service run to the house. It only heats, so you'd still need something separate for cooling, and it costs more to run here than a heat pump does. Almost no one in the county heats with gas, which tells you how rarely a furnace is actually the better fit.
A Maui County contractor will price both against your own house, your ductwork and your panel.
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