Heat pump vs Furnace in Bannock County, Idaho
When a heat pump makes sense
If you want one system that heats and cools, a cold-climate heat pump can do both. Get the cold-climate version, not a standard one, since a standard heat pump loses heating power once temperatures drop toward those 18°F winter nights. Even with the right model, plan on backup heat kicking in on the coldest mornings.
When a furnace makes sense
For most homes here, the furnace is the simpler call. Winter nights average 18°F from December through February, and gas heat costs at least 30% less to run than a heat pump at Idaho prices. With heat needed about 10 months of the year, that difference adds up. You will still need a separate air conditioner for summer, since the furnace only heats.
When a heat pump makes sense
If you want one system that heats and cools, a cold-climate heat pump can do both. Get the cold-climate version, not a standard one, since a standard heat pump loses heating power once temperatures drop toward those 18°F winter nights. Even with the right model, plan on backup heat kicking in on the coldest mornings.
When a furnace makes sense
For most homes here, the furnace is the simpler call. Winter nights average 18°F from December through February, and gas heat costs at least 30% less to run than a heat pump at Idaho prices. With heat needed about 10 months of the year, that difference adds up. You will still need a separate air conditioner for summer, since the furnace only heats.
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
Furnace wins in Bannock County.
Winter nights here average 18°F, and gas heat costs at least 30% less than a heat pump at Idaho prices, so the furnace wins.
If your home doesn't have a gas line, a cold-climate heat pump will still heat it through nights at 18°F and cool it come summer.
Find a contractor| Compared on | Heat pump | Furnace |
|---|---|---|
| Cost to run here | Costs more to run | At least 30% less to run |
| What it does | Heats and cools | Heats only |
| Homes in the Mountain West that heat with one | 9.1% | 69.6% |
| Handles a 18°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
If you want one system that heats and cools, a cold-climate heat pump can do both. Get the cold-climate version, not a standard one, since a standard heat pump loses heating power once temperatures drop toward those 18°F winter nights. Even with the right model, plan on backup heat kicking in on the coldest mornings.
When a furnace makes sense
For most homes here, the furnace is the simpler call. Winter nights average 18°F from December through February, and gas heat costs at least 30% less to run than a heat pump at Idaho prices. With heat needed about 10 months of the year, that difference adds up. You will still need a separate air conditioner for summer, since the furnace only heats.
A Bannock County contractor will price both against your own house, your ductwork and your panel.
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