An unfinished basement featuring a forced-air furnace, exposed wooden ceiling joists, bare concrete walls, and miscellaneous items including cardboard boxes and coiled cables on the floor.

Furnace vs Boiler in Minnehaha County, South Dakota

When a furnace makes sense

If your house already has ductwork, a furnace is the straightforward choice. Most homes in this region are set up this way, and a furnace uses that ductwork to move heat through the house and can also move cooled air in summer if you add central air later. With winter nights here averaging 10°F, you want a system that can push heat through every room fast, and a furnace does that well.

When a boiler makes sense

If your home already heats through radiators or in-floor pipes, a boiler is worth keeping rather than replacing with a furnace. It runs about 5% cheaper to operate here, which adds up over the 9 months a year this county needs heat. It only makes sense as a new install if your house has no ductwork to run a furnace through.

When a furnace makes sense

If your house already has ductwork, a furnace is the straightforward choice. Most homes in this region are set up this way, and a furnace uses that ductwork to move heat through the house and can also move cooled air in summer if you add central air later. With winter nights here averaging 10°F, you want a system that can push heat through every room fast, and a furnace does that well.

When a boiler makes sense

If your home already heats through radiators or in-floor pipes, a boiler is worth keeping rather than replacing with a furnace. It runs about 5% cheaper to operate here, which adds up over the 9 months a year this county needs heat. It only makes sense as a new install if your house has no ductwork to run a furnace through.

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

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 unit with copper pipes and a pressure gauge installed 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 Minnehaha 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 South Dakota prices
10°Faverage winter low
64%of homes here heat with gas

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

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 10°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. Most homes in this region are set up this way, and a furnace uses that ductwork to move heat through the house and can also move cooled air in summer if you add central air later. With winter nights here averaging 10°F, you want a system that can push heat through every room fast, and a furnace does that well.

When a boiler makes sense

If your home already heats through radiators or in-floor pipes, a boiler is worth keeping rather than replacing with a furnace. It runs about 5% cheaper to operate here, which adds up over the 9 months a year this county needs heat. It only makes sense as a new install if your house has no ductwork to run a furnace through.

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

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