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An unfinished basement containing a gray HVAC furnace with ductwork, exposed wooden joists, a concrete floor, and miscellaneous clutter in one corner.

Furnace vs Boiler in Gallatin County, Montana

When a furnace makes sense

If your house already has ductwork, a furnace ties into what's there without any extra work. Winters here drop to 13°F on average and homes need heat about 10 months of the year, so the system needs to hold up to a long, cold season, and a furnace running on natural gas is built for that.

When a boiler makes sense

If your home is set up with radiators or in-floor pipes instead of ducts, a boiler fits without adding ductwork. It also runs about 5% cheaper than a furnace at Montana prices, and with 10 months of heating a year here, that difference is worth something.

When a furnace makes sense

If your house already has ductwork, a furnace ties into what's there without any extra work. Winters here drop to 13°F on average and homes need heat about 10 months of the year, so the system needs to hold up to a long, cold season, and a furnace running on natural gas is built for that.

When a boiler makes sense

If your home is set up with radiators or in-floor pipes instead of ducts, a boiler fits without adding ductwork. It also runs about 5% cheaper than a furnace at Montana prices, and with 10 months of heating a year here, that difference is worth something.

An unfinished basement containing a gas furnace with ductwork in the foreground and miscellaneous stored items along the far concrete wall.

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

A gray boiler with a pressure gauge and copper pipes stands in an unfinished basement with stone walls and exposed ceiling joists.

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 Gallatin County.

In the Mountain West, 69.6% of homes heat with a furnace, so most already have the ductwork it needs.

About 5% lessto heat with a boiler than with a furnace, at Montana prices
13°Faverage winter low
55%of homes here heat with gas

If your home already has radiators or in-floor pipes instead of ductwork, a boiler is still the better choice.

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Compared onFurnaceBoiler
Cost to run hereCosts more to runAbout 5% less to run
What it doesHeats onlyHeats only
Homes in the Mountain West that heat with one69.6%4.3%
Handles a 13°F nightYesYes

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 ties into what's there without any extra work. Winters here drop to 13°F on average and homes need heat about 10 months of the year, so the system needs to hold up to a long, cold season, and a furnace running on natural gas is built for that.

When a boiler makes sense

If your home is set up with radiators or in-floor pipes instead of ducts, a boiler fits without adding ductwork. It also runs about 5% cheaper than a furnace at Montana prices, and with 10 months of heating a year here, that difference is worth something.

A Gallatin County contractor will price both against your own house, your ductwork and your panel.

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