Many New Jersey homeowners aren't sure whether they have a boiler or a furnace — and the two work very differently. Knowing which you have helps you maintain it and troubleshoot problems.
Furnaces heat air
A furnace heats air and distributes it through ductwork and vents (forced-air heating). If you have vents blowing warm air and a filter to change, you have a furnace. They share ductwork with central AC.
Boilers heat water
A boiler heats water and circulates it through radiators, baseboard heaters, or radiant floor loops. If you have radiators or baseboard units and no air vents for heat, you have a boiler.
Pros and cons
Furnaces are typically cheaper to install and share ducts with AC, but forced air can feel drier and distribute dust. Boilers deliver even, comfortable radiant heat and run quietly, but cost more to install and don't share infrastructure with cooling.
Maintenance differences
Furnaces need regular filter changes and annual inspections of the burner and heat exchanger. Boilers need pressure checks, bleeding of radiators, and inspection for leaks. Both benefit from a yearly professional tune-up before heating season.
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