Furnace vs Boiler in Whatcom County, Washington
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It runs on gas and heats through the ducts you already have, and it keeps up through winter nights that average 27°F here. You also get central air handling built into the same ducts, using a system you already know how to live with.
When a boiler makes sense
If your home is set up with radiators or in-floor pipes instead of ducts, a boiler is the machine built for that. It runs about 5% cheaper than a furnace at Washington gas prices, which adds up when you're heating close to 12 months a year here. It won't move air through a duct system, so it makes sense where that piping is already in place.
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It runs on gas and heats through the ducts you already have, and it keeps up through winter nights that average 27°F here. You also get central air handling built into the same ducts, using a system you already know how to live with.
When a boiler makes sense
If your home is set up with radiators or in-floor pipes instead of ducts, a boiler is the machine built for that. It runs about 5% cheaper than a furnace at Washington gas prices, which adds up when you're heating close to 12 months a year here. It won't move air through a duct system, so it makes sense where that piping is 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 Whatcom County.
In the Pacific states, 56.9% of homes heat with a furnace, so just over half already have the ductwork it needs.
If your home already runs on radiators or in-floor pipes and has 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 the Pacific states that heat with one | 56.9% | 1.6% |
| Handles a 27°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 runs on gas and heats through the ducts you already have, and it keeps up through winter nights that average 27°F here. You also get central air handling built into the same ducts, using a system you already know how to live with.
When a boiler makes sense
If your home is set up with radiators or in-floor pipes instead of ducts, a boiler is the machine built for that. It runs about 5% cheaper than a furnace at Washington gas prices, which adds up when you're heating close to 12 months a year here. It won't move air through a duct system, so it makes sense where that piping is already in place.
A Whatcom County contractor will price both against your own house, your ductwork and your panel.
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