
What Is an AFUE Rating?
The annual fuel utilization efficiency rating, more commonly called AFUE, is one of the most basic metrics for a heating system’s performance. AFUE rating is a solid number for telling how efficiently a furnace will run and what its total cost of ownership is likely to be. Alongside factors like ductwork, proper sizing, and professional installation, AFUE is a strong indicator of real-world performance. Quick Takeaway AFUE stands for Annual Fuel Utilization Efficiency It measures







