Idaho HVAC Pros
A gray forced-air furnace with ductwork stands in an unfinished concrete basement surrounded by storage items and clutter.

Furnace vs Boiler in Canyon County, Idaho

When a furnace makes sense

If your home already has ductwork, a furnace is the straightforward choice. It ties into the ducts you have, and with eight months of heating a year and nights averaging 25°F, gas keeps the cost of running it down.

When a boiler makes sense

A boiler makes sense if your home heats through radiators or in-floor pipes rather than ducts. It runs about 5% cheaper than a furnace here, which matters over eight months of heating season. Without ductwork already in place, it stays the simpler path than adding a duct system for a furnace.

When a furnace makes sense

If your home already has ductwork, a furnace is the straightforward choice. It ties into the ducts you have, and with eight months of heating a year and nights averaging 25°F, gas keeps the cost of running it down.

When a boiler makes sense

A boiler makes sense if your home heats through radiators or in-floor pipes rather than ducts. It runs about 5% cheaper than a furnace here, which matters over eight months of heating season. Without ductwork already in place, it stays the simpler path than adding a duct system for a furnace.

An empty unfinished basement containing a forced-air furnace with overhead ductwork, exposed ceiling joists, and a single hanging light bulb.

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 blue steel boiler with copper pipes and a pressure gauge mounted in an unfinished basement with stone walls and wooden stairs.

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 Canyon 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 Idaho prices
25°Faverage winter low
59%of homes here heat with gas

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

Find a contractor
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 25°F nightYesYes

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. It ties into the ducts you have, and with eight months of heating a year and nights averaging 25°F, gas keeps the cost of running it down.

When a boiler makes sense

A boiler makes sense if your home heats through radiators or in-floor pipes rather than ducts. It runs about 5% cheaper than a furnace here, which matters over eight months of heating season. Without ductwork already in place, it stays the simpler path than adding a duct system for a furnace.

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

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