Furnace vs Boiler in Spartanburg County, South Carolina
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice. Winters here are mild, with nights averaging 33°F and only about 7 months of the year needing heat at all, so a furnace that can also move air for your air conditioner means one system doing most of the work year round.
When a boiler makes sense
A boiler fits a home already set up with radiators or in-floor pipes rather than ducts. It runs about 5% cheaper to operate than a furnace here, so if your house is built around that kind of heat, there's no reason to add ductwork just to switch. It won't heat and cool through the same system though, so you'd still need separate air conditioning.
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice. Winters here are mild, with nights averaging 33°F and only about 7 months of the year needing heat at all, so a furnace that can also move air for your air conditioner means one system doing most of the work year round.
When a boiler makes sense
A boiler fits a home already set up with radiators or in-floor pipes rather than ducts. It runs about 5% cheaper to operate than a furnace here, so if your house is built around that kind of heat, there's no reason to add ductwork just to switch. It won't heat and cool through the same system though, so you'd still need separate air conditioning.
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 Spartanburg County.
Just over half the homes in this region already run on furnaces, so the ductwork's usually already there waiting for it.
If your home already has radiators or in-floor pipes instead of ductwork, a boiler is still the better fit.
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 South Atlantic states that heat with one | 48% | 2% |
| Handles a 33°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. Winters here are mild, with nights averaging 33°F and only about 7 months of the year needing heat at all, so a furnace that can also move air for your air conditioner means one system doing most of the work year round.
When a boiler makes sense
A boiler fits a home already set up with radiators or in-floor pipes rather than ducts. It runs about 5% cheaper to operate than a furnace here, so if your house is built around that kind of heat, there's no reason to add ductwork just to switch. It won't heat and cool through the same system though, so you'd still need separate air conditioning.
A Spartanburg County contractor will price both against your own house, your ductwork and your panel.
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