Furnace vs Boiler in Hamilton County, Tennessee
When a furnace makes sense
If your home already has ductwork in place, a furnace makes sense to keep using it. Winter nights here average 32°F and you need heat about seven months of the year, which a furnace is built to handle. It also gives you a path to central air through those same ducts, if you ever want it.
When a boiler makes sense
A boiler is worth a look if your home already has radiators or in-floor piping instead of ducts, since it uses that system to heat without any ductwork added. It runs about 5% cheaper than a furnace here at current gas prices, which adds up over seven months of heating. Keep in mind a boiler only heats, so central air would mean a separate system.
When a furnace makes sense
If your home already has ductwork in place, a furnace makes sense to keep using it. Winter nights here average 32°F and you need heat about seven months of the year, which a furnace is built to handle. It also gives you a path to central air through those same ducts, if you ever want it.
When a boiler makes sense
A boiler is worth a look if your home already has radiators or in-floor piping instead of ducts, since it uses that system to heat without any ductwork added. It runs about 5% cheaper than a furnace here at current gas prices, which adds up over seven months of heating. Keep in mind a boiler only heats, so central air would mean a separate system.
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 Hamilton County.
Most homes here were built around 1982, and homes that age already have ductwork in place, which makes a furnace the easier install.
If your home already has radiators or in-floor piping 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 |
| Handles a 32°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 in place, a furnace makes sense to keep using it. Winter nights here average 32°F and you need heat about seven months of the year, which a furnace is built to handle. It also gives you a path to central air through those same ducts, if you ever want it.
When a boiler makes sense
A boiler is worth a look if your home already has radiators or in-floor piping instead of ducts, since it uses that system to heat without any ductwork added. It runs about 5% cheaper than a furnace here at current gas prices, which adds up over seven months of heating. Keep in mind a boiler only heats, so central air would mean a separate system.
A Hamilton County contractor will price both against your own house, your ductwork and your panel.
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