Furnace vs Boiler in Douglas County, Colorado
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It ties into what's there, and it gives you central air down the road through those same ducts, which a boiler cannot do. It also runs on the gas line most homes here already have.
When a boiler makes sense
A boiler makes sense if your home has radiators or in-floor pipes instead of ductwork, since that is how it delivers heat. It runs about 5% cheaper here at current gas prices, which adds up over a winter where nights average 17°F and you are heating nine months of the year. Without ducts already in place, it is the machine that fits your house as built.
When a furnace makes sense
If your house already has ductwork, a furnace is the straightforward choice. It ties into what's there, and it gives you central air down the road through those same ducts, which a boiler cannot do. It also runs on the gas line most homes here already have.
When a boiler makes sense
A boiler makes sense if your home has radiators or in-floor pipes instead of ductwork, since that is how it delivers heat. It runs about 5% cheaper here at current gas prices, which adds up over a winter where nights average 17°F and you are heating nine months of the year. Without ducts already in place, it is the machine that fits your house as built.
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 Douglas County.
In the Mountain West, 69.6% of homes heat with a furnace, so most already have the ductwork it needs.
If your home already has radiators or in-floor pipes instead of ductwork, a boiler is still worth choosing.
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 Mountain West that heat with one | 69.6% | 4.3% |
| Handles a 17°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 ties into what's there, and it gives you central air down the road through those same ducts, which a boiler cannot do. It also runs on the gas line most homes here already have.
When a boiler makes sense
A boiler makes sense if your home has radiators or in-floor pipes instead of ductwork, since that is how it delivers heat. It runs about 5% cheaper here at current gas prices, which adds up over a winter where nights average 17°F and you are heating nine months of the year. Without ducts already in place, it is the machine that fits your house as built.
A Douglas County contractor will price both against your own house, your ductwork and your panel.
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