A Furnace Airs it Out

A furnace is a warm air system.

The word “furnace” has become a generic term for heating systems. In reality, a furnace is the heating unit in a warm air system (sometimes called a forced air system). After air is heated in the furnace, a blower forces it into a duct system, and it is released through vents or registers on floors, walls or ceilings.

Making your home more comfortable

Besides heat, the ductwork that connects with your furnace can provide other kinds of conditioned air. For example, you can:

  • stay cool with a central air system.
  • eliminate dry air by adding a whole-house humidifier.
  • filter out dust, pollen and other particles, which can cause allergic reactions, by adding an air cleaner.