A furnace is a key part of a home heating system, commonly used in many American homes. It works by creating warm air using natural gas, electricity, or oil, then pushing that air through your ductwork to heat every room in your house.

Furnaces are especially important in colder climates, providing fast and reliable heat during the winter months. If you rely on central heating, chances are your system includes a furnace that helps keep your home comfortable and warm.