The answer to 'difference between furnace and boiler' is that a furnace and a boiler are two distinct types of home heating systems. A furnace heats air and distributes it through ductwork, while a boiler heats water and distributes the hot water or steam through pipes. Furnaces are more common in homes, while boilers are often found in older homes or buildings with radiator-based heating systems.
Furnaces are generally less expensive to install and maintain than boilers, and they are more efficient at heating larger spaces. Boilers, on the other hand, can provide more even and comfortable heating, and they are often more energy-efficient. Boilers also have the advantage of being able to provide hot water for household use, while furnaces typically do not.