Boiler vs. Furnace: What’s the Difference?
Both boilers and furnaces burn fuel to help heat your home, but they do so quite differently. Furnaces - also called forced air furnaces - directly heat the air, which is then pushed throughout your home. Boilers heat water, which is sent as steam through a radiator system.
Comparing Boilers and Furnaces
|Power source||Gas, oil, propane||Gas or oil|
|Energy efficiency||AFUE up to 98.5 percent||AFUE rate up to 95 percent|
|Distribution||Ducts distribute air to vents||Water or steam is delivered to radiators|
|Domestic Hot Water (DHW) Heating||Not available||Available with select models|