How Much Does It Cost To Install A Furnace? National Average Change Location Subtract the cost of operating your new furnace for a year versus operating your old .The average cost of a new furnace, not including central air, is $, to $. I understand how useless that wide range is, to many people lo.ng for an average cost..The lowest efficiency allowed by law for new gas furnaces is percent, and some news achieve percent, near total efficiency. The price of a furnace generally rises in step with its fuel efficiency. A furnace with a percent AFUE might cost $, more than a similar size unit with an percent AFUE..Replacing a gas furnace can cost $ $, for a self contained and vented wall unit that provides air directly to the surroundinge $ $, for a gas floor furnace heat rises from a grill flush with the floor $, $, for a mid efficiency gas furnace in a central heating system and $, $, or more for a .
The national average cost of furnace replacement is $,, with most homeowners spending between $, and $,. This data is based on actual project costs as reported by HomeAdvisor members. Whether you need to replace a dead furnace or install an entirely new heating system, you re lo.ng at a significant . If you re in the market for a new furnace,then consider these important things to get a better idea of how much your new furnace may cost..