How to Tell How Energy Efficient Your Heater Is
Heating your home can be costly. If you have a highly energy-efficient heater, it can save you a lot of money. There are a few ways to determine how energy-efficient your heater is. AFUE Rating Heater efficiency is rated by its annual fuel utilization efficiency (AFUE). This is a percentage that is determined by how efficiently it converts fuel into heat. For example, a heater with a 95% AFUE rating converts 95% of its fuel into heat. Heaters must have an AFUE of at least 78%. Highly efficient heaters have an AFUE between 90% and 97%.
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