An empty unfinished basement containing a forced-air furnace with overhead ductwork, exposed ceiling joists, and a single hanging light bulb.

Furnace vs Boiler in Mercer County, New Jersey

When a furnace makes sense

If your house already has ductwork, a furnace is the straightforward choice. It ties into the ducts you have, and just over half the homes in this region are already set up that way. It heats only, through the vents, so cooling later would use the same ducts.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than vents, a boiler is the natural fit, since it runs on that kind of system. It costs about 5% less to run than a furnace at New Jersey gas prices, which adds up over a winter that runs about seven months here with nights near 26°F. It heats only, so it won't handle cooling.

When a furnace makes sense

If your house already has ductwork, a furnace is the straightforward choice. It ties into the ducts you have, and just over half the homes in this region are already set up that way. It heats only, through the vents, so cooling later would use the same ducts.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than vents, a boiler is the natural fit, since it runs on that kind of system. It costs about 5% less to run than a furnace at New Jersey gas prices, which adds up over a winter that runs about seven months here with nights near 26°F. It heats only, so it won't handle cooling.

An unfinished basement interior featuring a large metal furnace unit, exposed ceiling joists, concrete walls, and scattered boxes and cables on the floor.

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 blue boiler with copper pipework and a pressure gauge mounted in an unfinished basement with stone foundation walls.

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 Mercer County.

In the Mid-Atlantic, 51.4% 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 New Jersey prices
26°Faverage winter low
71%of homes here heat with gas

If your home already runs on radiators or in-floor pipes, a boiler still makes more sense than tearing out that system for ductwork.

Find a contractor
Compared onFurnaceBoiler
Cost to run hereCosts more to runAbout 5% less to run
What it doesHeats onlyHeats only
Homes in the Mid-Atlantic that heat with one51.4%27.9%
Handles a 26°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. It ties into the ducts you have, and just over half the homes in this region are already set up that way. It heats only, through the vents, so cooling later would use the same ducts.

When a boiler makes sense

If your home heats through radiators or in-floor pipes rather than vents, a boiler is the natural fit, since it runs on that kind of system. It costs about 5% less to run than a furnace at New Jersey gas prices, which adds up over a winter that runs about seven months here with nights near 26°F. It heats only, so it won't handle cooling.

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

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