Iowa HVAC Match
A gray forced-air furnace with metal ductwork stands in an unfinished basement with exposed wooden joists, concrete walls, and a single hanging light bulb.

Furnace vs Boiler in Warren County, Iowa

When a furnace makes sense

If your house already has ductwork, a furnace is the straightforward choice. That same duct system can carry air conditioning too, which a boiler can't do on its own. With winter nights here dropping to 17°F on average, you want a heating system that matches what your home is already set up for.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the natural fit, and it runs about 5% cheaper here on gas. That saving matters over the 8 months a year this county needs heat. It's worth considering if you're not planning to add central air, since a boiler won't handle that side of things.

When a furnace makes sense

If your house already has ductwork, a furnace is the straightforward choice. That same duct system can carry air conditioning too, which a boiler can't do on its own. With winter nights here dropping to 17°F on average, you want a heating system that matches what your home is already set up for.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the natural fit, and it runs about 5% cheaper here on gas. That saving matters over the 8 months a year this county needs heat. It's worth considering if you're not planning to add central air, since a boiler won't handle that side of things.

An unfinished concrete basement containing a gas furnace with sheet-metal ductwork, utility shelving, and exposed overhead joists.

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 Warren County.

In the Plains states, 77.6% 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 Iowa prices
17°Faverage winter low
54%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 Plains states that heat with one77.6%6.5%
Handles a 17°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 is the straightforward choice. That same duct system can carry air conditioning too, which a boiler can't do on its own. With winter nights here dropping to 17°F on average, you want a heating system that matches what your home is already set up for.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than ducts, a boiler is the natural fit, and it runs about 5% cheaper here on gas. That saving matters over the 8 months a year this county needs heat. It's worth considering if you're not planning to add central air, since a boiler won't handle that side of things.

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

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