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Equipment
Furnace
A heating system that warms air and distributes it through ductwork.
Furnaces burn fuel (oil, propane, or natural gas) to heat air, then a blower pushes that air through your ducts and out the registers. They recover quickly from a setback and pair naturally with central AC, since the same ducts carry both.
Related terms
Boiler
A heating system that heats water and circulates it through radiators, baseboards, or radiant tubing.
ReadHeat Pump
An electric system that moves heat instead of generating it — providing both heating and cooling from one unit.
ReadAFUE (Annual Fuel Utilization Efficiency)
The percentage of a heating system's fuel energy that becomes useful heat over a typical year.
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