AFUE stands for Annual Fuel Utilization Efficiency. Simply put, the higher the AFUE, the more efficiently your furnace will convert fuel into heat,

Want a few more details? A furnace’s AFUE rating is listed as a percentage of how much fuel it can convert into usable heat, with a scale ranging from around 30-100. The Bryant furnaces we carry are rated at 95% or higher AFUE. It is important to note that the type of fuel you use, however (natural gas, oil, electric, geothermal, etc.) will have a greater impact on your heating costs.