Furnace vs Boiler in Sullivan County, New Hampshire
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It heats the air and pushes it through the ducts you already have, so there is nothing new to install to get warm air into every room. With winter nights averaging 13°F here and heat needed about nine months a year, a furnace has to work hard, but it will do that job through the ducts already in place.
When a boiler makes sense
If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the machine built for that. It also costs about 5% less to run than a furnace at New Hampshire prices, which adds up over nine months of heating a year. It makes the most sense in a house that was never set up for ductwork in the first place.
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It heats the air and pushes it through the ducts you already have, so there is nothing new to install to get warm air into every room. With winter nights averaging 13°F here and heat needed about nine months a year, a furnace has to work hard, but it will do that job through the ducts already in place.
When a boiler makes sense
If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the machine built for that. It also costs about 5% less to run than a furnace at New Hampshire prices, which adds up over nine months of heating a year. It makes the most sense in a house that was never set up for ductwork in the first place.
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 Sullivan County.
In New England, 54.8% of homes heat with a furnace, so just over half already have the ductwork it needs.
If your home already has radiators or in-floor pipes and no 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 New England that heat with one | 54.8% | 26.2% |
| Handles a 13°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 air and pushes it through the ducts you already have, so there is nothing new to install to get warm air into every room. With winter nights averaging 13°F here and heat needed about nine months a year, a furnace has to work hard, but it will do that job through the ducts already in place.
When a boiler makes sense
If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the machine built for that. It also costs about 5% less to run than a furnace at New Hampshire prices, which adds up over nine months of heating a year. It makes the most sense in a house that was never set up for ductwork in the first place.
A Sullivan County contractor will price both against your own house, your ductwork and your panel.
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