Furnace vs Boiler in Rock County, Wisconsin
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice. That same ductwork can carry cooling later if you ever add central air, which a boiler can't do. At 16°F on a winter night your furnace just needs to cycle enough natural gas through the burner to keep the air coming out warm.
When a boiler makes sense
If your home already heats through radiators or in-floor pipes, a boiler is the natural fit rather than a reason to install ductwork from scratch. Boiler heat runs about 5% cheaper here than a furnace, which adds up over the roughly 8 months a year your heat is working. The tradeoff is that a boiler only heats. It won't carry cooling the way a furnace's ducts can.
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice. That same ductwork can carry cooling later if you ever add central air, which a boiler can't do. At 16°F on a winter night your furnace just needs to cycle enough natural gas through the burner to keep the air coming out warm.
When a boiler makes sense
If your home already heats through radiators or in-floor pipes, a boiler is the natural fit rather than a reason to install ductwork from scratch. Boiler heat runs about 5% cheaper here than a furnace, which adds up over the roughly 8 months a year your heat is working. The tradeoff is that a boiler only heats. It won't carry cooling the way a furnace's ducts can.
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 Rock County.
In the Great Lakes states, 78.8% 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 is still the better choice.
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 Great Lakes states that heat with one | 78.8% | 7.7% |
| Handles a 16°F night | Yes | Yes |
Sources: U.S. Energy Information Administration, U.S. Department of Energy, NOAA
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice. That same ductwork can carry cooling later if you ever add central air, which a boiler can't do. At 16°F on a winter night your furnace just needs to cycle enough natural gas through the burner to keep the air coming out warm.
When a boiler makes sense
If your home already heats through radiators or in-floor pipes, a boiler is the natural fit rather than a reason to install ductwork from scratch. Boiler heat runs about 5% cheaper here than a furnace, which adds up over the roughly 8 months a year your heat is working. The tradeoff is that a boiler only heats. It won't carry cooling the way a furnace's ducts can.
A Rock County contractor will price both against your own house, your ductwork and your panel.
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