What AFUE Means for Your Heating System
What AFUE Means for Your Heating System AFUE, which stands for Annual Fuel Utilization Efficiency, is a measurement used to determine the efficiency of combustion appliances like water heaters, boilers, and furnaces. You should pay attention to AFUE ratings, which tell how much fuel the furnace will use to heat the home. What Is AFUE? The rating is derived via a simple formula: dividing the energy required to run the furnace (in BTUs or British Thermal Units) with the heating energy the system releases (also in BTUs). This registers as a percentage: the higher the percentage, the more of the…
