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 Weld County, Colorado

When a furnace makes sense

If your home already has ductwork, a furnace is the straightforward choice. It ties into what's there, and with 69.6% of homes in this region already set up for one, you're likely in that position. Eight months of heating a year and nights down near 16°F call for equipment built to keep up, and a furnace does that through the ducts you already have.

When a boiler makes sense

If your home heats through radiators or in-floor pipes instead of ducts, a boiler is the one that fits what's already there. It runs about 5% cheaper to operate than a furnace at Colorado gas prices, which adds up over eight months of heating a year. It won't help you add cooling later since it heats only, so it makes the most sense in a home that was never going to carry ductwork anyway.

When a furnace makes sense

If your home already has ductwork, a furnace is the straightforward choice. It ties into what's there, and with 69.6% of homes in this region already set up for one, you're likely in that position. Eight months of heating a year and nights down near 16°F call for equipment built to keep up, and a furnace does that through the ducts you already have.

When a boiler makes sense

If your home heats through radiators or in-floor pipes instead of ducts, a boiler is the one that fits what's already there. It runs about 5% cheaper to operate than a furnace at Colorado gas prices, which adds up over eight months of heating a year. It won't help you add cooling later since it heats only, so it makes the most sense in a home that was never going to carry ductwork anyway.

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 metal boiler with a pressure gauge and piping installed in an unfinished stone-walled basement.

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 Weld 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 Colorado prices
16°Faverage winter low
73%of homes here heat with gas

If your home already heats through radiators or in-floor pipes 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 16°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 what's there, and with 69.6% of homes in this region already set up for one, you're likely in that position. Eight months of heating a year and nights down near 16°F call for equipment built to keep up, and a furnace does that through the ducts you already have.

When a boiler makes sense

If your home heats through radiators or in-floor pipes instead of ducts, a boiler is the one that fits what's already there. It runs about 5% cheaper to operate than a furnace at Colorado gas prices, which adds up over eight months of heating a year. It won't help you add cooling later since it heats only, so it makes the most sense in a home that was never going to carry ductwork anyway.

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

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