A gas furnace and sheet-metal air handler unit installed in an unfinished concrete basement.

Furnace vs Boiler in Lea County, New Mexico

When a furnace makes sense

If your home already has ductwork, a furnace is the straightforward choice. Most homes in this region are set up this way, so you are not paying to add ducts before the heat even starts. It runs on natural gas and heats the air that moves through those ducts, which also means the same ducts can carry cooled air in summer if you add central air later.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the machine built for that. It runs about 5% cheaper to operate here than a furnace, which is worth something with winter nights averaging 28°F. It only makes sense to switch to one if you are willing to take on radiators or in-floor pipes, since a boiler cannot use ductwork.

When a furnace makes sense

If your home already has ductwork, a furnace is the straightforward choice. Most homes in this region are set up this way, so you are not paying to add ducts before the heat even starts. It runs on natural gas and heats the air that moves through those ducts, which also means the same ducts can carry cooled air in summer if you add central air later.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the machine built for that. It runs about 5% cheaper to operate here than a furnace, which is worth something with winter nights averaging 28°F. It only makes sense to switch to one if you are willing to take on radiators or in-floor pipes, since a boiler cannot use ductwork.

An unfinished concrete basement containing a metal HVAC air handler, exposed wooden ceiling joists with sheet-metal ducts, a hanging bare bulb, copper pipes, and stacked cardboard boxes.

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 copper and black piping mounted against a concrete block wall in an unfinished 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 Lea 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 New Mexico prices
28°Faverage winter low
40%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.

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 28°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. Most homes in this region are set up this way, so you are not paying to add ducts before the heat even starts. It runs on natural gas and heats the air that moves through those ducts, which also means the same ducts can carry cooled air in summer if you add central air later.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the machine built for that. It runs about 5% cheaper to operate here than a furnace, which is worth something with winter nights averaging 28°F. It only makes sense to switch to one if you are willing to take on radiators or in-floor pipes, since a boiler cannot use ductwork.

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

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