Furnace vs Boiler in Lehigh County, Pennsylvania
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. The same ducts move cooled air in summer, so you are not paying for a second system later. With eight months of heating and nights averaging 22°F, you want equipment matched to the house you have, and here that usually means a furnace.
When a boiler makes sense
If your home is set up with radiators or in-floor pipes instead of ducts, a boiler is the right fit rather than something to work around. It runs about 5% cheaper to operate than a furnace at Pennsylvania gas prices, which adds up over eight months of heating. Choose it when your house was built for that kind of heat, not as an upgrade to a home with ducts already in place.
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. The same ducts move cooled air in summer, so you are not paying for a second system later. With eight months of heating and nights averaging 22°F, you want equipment matched to the house you have, and here that usually means a furnace.
When a boiler makes sense
If your home is set up with radiators or in-floor pipes instead of ducts, a boiler is the right fit rather than something to work around. It runs about 5% cheaper to operate than a furnace at Pennsylvania gas prices, which adds up over eight months of heating. Choose it when your house was built for that kind of heat, not as an upgrade to a home with ducts already in 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 Lehigh County.
In the Mid-Atlantic, 51.4% 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 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 Mid-Atlantic that heat with one | 51.4% | 27.9% |
| Handles a 22°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. The same ducts move cooled air in summer, so you are not paying for a second system later. With eight months of heating and nights averaging 22°F, you want equipment matched to the house you have, and here that usually means a furnace.
When a boiler makes sense
If your home is set up with radiators or in-floor pipes instead of ducts, a boiler is the right fit rather than something to work around. It runs about 5% cheaper to operate than a furnace at Pennsylvania gas prices, which adds up over eight months of heating. Choose it when your house was built for that kind of heat, not as an upgrade to a home with ducts already in place.
A Lehigh County contractor will price both against your own house, your ductwork and your panel.
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