Furnace vs Boiler in Gwinnett County, Georgia
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice. Winter nights here only average 34°F and you're running heat about six months of the year, so you don't need a system built for deeper cold than that. Gas furnaces are the common setup in homes like this across the region, which is one reason so many houses here already have the ductwork for one.
When a boiler makes sense
A boiler makes sense if your home already has radiators or in-floor pipes instead of ductwork. It runs about 5% cheaper than a furnace on gas here, which is worth something over a six-month heating season. It's a less common setup in this region, so it tends to fit homes already built for it rather than ones you'd retrofit.
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice. Winter nights here only average 34°F and you're running heat about six months of the year, so you don't need a system built for deeper cold than that. Gas furnaces are the common setup in homes like this across the region, which is one reason so many houses here already have the ductwork for one.
When a boiler makes sense
A boiler makes sense if your home already has radiators or in-floor pipes instead of ductwork. It runs about 5% cheaper than a furnace on gas here, which is worth something over a six-month heating season. It's a less common setup in this region, so it tends to fit homes already built for it rather than ones you'd retrofit.
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 Gwinnett County.
Just over half the homes in this region already heat with a furnace, and Gwinnett's ductwork is built around that.
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 South Atlantic states that heat with one | 48% | 2% |
| Handles a 34°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. Winter nights here only average 34°F and you're running heat about six months of the year, so you don't need a system built for deeper cold than that. Gas furnaces are the common setup in homes like this across the region, which is one reason so many houses here already have the ductwork for one.
When a boiler makes sense
A boiler makes sense if your home already has radiators or in-floor pipes instead of ductwork. It runs about 5% cheaper than a furnace on gas here, which is worth something over a six-month heating season. It's a less common setup in this region, so it tends to fit homes already built for it rather than ones you'd retrofit.
A Gwinnett County contractor will price both against your own house, your ductwork and your panel.
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