Furnace vs Boiler in Cowlitz County, Washington
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice, since it heats air and sends it through the ducts you've got. Across this region just over half of homes are already set up this way, which is worth knowing if you're weighing what else you'd need to change.
When a boiler makes sense
A boiler makes sense if your home runs on radiators or in-floor pipes rather than ducts, since that's how it delivers heat. It also costs about 5% less to run than a furnace at Washington gas prices, which is worth something when you're heating for 10 months a year and nights average 33°F. Just know that a boiler heats only, so ducted cooling would mean separate equipment.
When a furnace makes sense
If your home already has ductwork, a furnace is the straightforward choice, since it heats air and sends it through the ducts you've got. Across this region just over half of homes are already set up this way, which is worth knowing if you're weighing what else you'd need to change.
When a boiler makes sense
A boiler makes sense if your home runs on radiators or in-floor pipes rather than ducts, since that's how it delivers heat. It also costs about 5% less to run than a furnace at Washington gas prices, which is worth something when you're heating for 10 months a year and nights average 33°F. Just know that a boiler heats only, so ducted cooling would mean separate equipment.
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 Cowlitz 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 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 Pacific states that heat with one | 56.9% | 1.6% |
| 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, since it heats air and sends it through the ducts you've got. Across this region just over half of homes are already set up this way, which is worth knowing if you're weighing what else you'd need to change.
When a boiler makes sense
A boiler makes sense if your home runs on radiators or in-floor pipes rather than ducts, since that's how it delivers heat. It also costs about 5% less to run than a furnace at Washington gas prices, which is worth something when you're heating for 10 months a year and nights average 33°F. Just know that a boiler heats only, so ducted cooling would mean separate equipment.
A Cowlitz County contractor will price both against your own house, your ductwork and your panel.
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