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

Furnace vs Boiler in Sacramento County, California

When a furnace makes sense

If your house already has ducts, a furnace is the straightforward choice. It heats the air and pushes it through that ductwork, and with winter nights only dropping to about 40°F, a gas furnace here isn't working against any hard freeze. Just over half the homes in this region already have ducts in place, so there's a good chance yours is ready for one.

When a boiler makes sense

A boiler makes sense if your home already has radiators or in-floor pipes instead of ducts. It heats water and sends that heat through those pipes, so there's no ductwork to add or work around. It also runs about 5% cheaper here than a furnace, and with six months of heating season, that adds up over a winter.

When a furnace makes sense

If your house already has ducts, a furnace is the straightforward choice. It heats the air and pushes it through that ductwork, and with winter nights only dropping to about 40°F, a gas furnace here isn't working against any hard freeze. Just over half the homes in this region already have ducts in place, so there's a good chance yours is ready for one.

When a boiler makes sense

A boiler makes sense if your home already has radiators or in-floor pipes instead of ducts. It heats water and sends that heat through those pipes, so there's no ductwork to add or work around. It also runs about 5% cheaper here than a furnace, and with six months of heating season, that adds up over a winter.

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 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 Sacramento County.

In the Pacific states, 56.9% of homes heat with a furnace, so just over half already have the ductwork it needs.

About 5% lessto heat with a boiler than with a furnace, at California prices
40°Faverage winter low
57%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 Pacific states that heat with one56.9%1.6%
Handles a 40°F nightYesYes

Sources: U.S. Energy Information Administration, U.S. Department of Energy, NOAA

When a furnace makes sense

If your house already has ducts, a furnace is the straightforward choice. It heats the air and pushes it through that ductwork, and with winter nights only dropping to about 40°F, a gas furnace here isn't working against any hard freeze. Just over half the homes in this region already have ducts in place, so there's a good chance yours is ready for one.

When a boiler makes sense

A boiler makes sense if your home already has radiators or in-floor pipes instead of ducts. It heats water and sends that heat through those pipes, so there's no ductwork to add or work around. It also runs about 5% cheaper here than a furnace, and with six months of heating season, that adds up over a winter.

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

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