How Much Does Replacing A Furnace Cost
New Furnace Cost Structures Energy Efficiency (AFUE) A key indicator of a furnace’s efficiency is Annual Fuel Utilization Efficiency (AFUE). AFUE is expressed in terms of a percentage. Higher percentages mean a more energy-efficient furnace. The U.S. federal government mandates that new furnaces should meet or exceed 80-percent AFUE. The AFUE percentage will drive the cost of the furnace up or down. Expect furnaces in the high, 97.3-percent AFUE ratings to cost between 50- and 60-percent more than those in the 80-percent AFUE level....