Furnace vs Boiler in Bonneville County, Idaho
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It heats the same air you already cool in summer if you have central air, using the same ducts. With ten months of heating a year here and nights averaging 15°F, you want a system that most homes around you are already set up for.
When a boiler makes sense
If your home heats through radiators or in-floor pipes rather than ducts, a boiler fits what you already have. It runs about 5% cheaper than a furnace at Idaho prices, which adds up over a heating season that stretches ten months here. It makes the most sense when you are not also trying to add central air, since a boiler has no ductwork to share with it.
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It heats the same air you already cool in summer if you have central air, using the same ducts. With ten months of heating a year here and nights averaging 15°F, you want a system that most homes around you are already set up for.
When a boiler makes sense
If your home heats through radiators or in-floor pipes rather than ducts, a boiler fits what you already have. It runs about 5% cheaper than a furnace at Idaho prices, which adds up over a heating season that stretches ten months here. It makes the most sense when you are not also trying to add central air, since a boiler has no ductwork to share with it.
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
Boiler
- 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 Bonneville County.
In the Mountain West, 69.6% of homes heat with a furnace, so most already have the ductwork it needs.
If your home already has radiators or in-floor pipes instead of ductwork, a boiler still makes more sense than adding ducts for a furnace.
Find a contractor| Compared on | Furnace | Boiler |
|---|---|---|
| Cost to run here | Costs more to run | About 5% less to run |
| What it does | Heats only | Heats only |
| Homes in the Mountain West that heat with one | 69.6% | 4.3% |
| Handles a 15°F night | Yes | Yes |
Sources: U.S. Energy Information Administration, U.S. Department of Energy, NOAA
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It heats the same air you already cool in summer if you have central air, using the same ducts. With ten months of heating a year here and nights averaging 15°F, you want a system that most homes around you are already set up for.
When a boiler makes sense
If your home heats through radiators or in-floor pipes rather than ducts, a boiler fits what you already have. It runs about 5% cheaper than a furnace at Idaho prices, which adds up over a heating season that stretches ten months here. It makes the most sense when you are not also trying to add central air, since a boiler has no ductwork to share with it.
A Bonneville County contractor will price both against your own house, your ductwork and your panel.
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