Furnaces
Annual Fuel Utilization Efficiency (A.F.U.E. rating) is your guide for comparing gas furnace efficiencies. The higher the number, the more efficient the furnace. Beginning in 1992, the Federal Government required all gas furnaces to meet or exceed an A.F.U.E. rating of 78%. Although this was an improvement over previous furnaces ratings of 65% or less, today's furnaces offer even greater efficiencies. Replacing your older gas furnace with a high efficiency 90+% model can result in significant energy savings.
