A gravity furnace works similarly to a large stove. The gravity furnace has a chamber that burns fuel to generate heat that is then transferred through your air ducts to heat your home. Since heat rises, gravity furnaces are usually installed in basements to get the best air flow. Gravity furnaces are less common now since they are not as efficient as newer heating systems. Additionally, gravity furnaces are also harder to repair since they aren’t as common as standard furnaces. To find out more about heating systems, call us today.