What does AFUE stand for?

AFUE stands for Annual Fuel Utilization Efficiency. This term is an important measure in the context of heating appliances, particularly boilers and furnaces. AFUE is used to indicate the efficiency of these systems in converting fuel to heat over the course of a year. Specifically, it represents the percentage of fuel converted to usable heat, with higher percentages indicating more efficient systems.

Understanding AFUE is crucial for evaluating the performance of heating systems, promoting energy-efficient options, and reducing energy consumption in residential and commercial buildings. This metric is vital for compliance with energy standards and for achieving points in green rating systems like LEED, where energy efficiency is a key performance indicator.