What does AFUE stand for?

AFUE stands for Annual Fuel Utilization Efficiency. This term is crucial in the context of heating systems, particularly in evaluating the efficiency of residential furnaces and boilers. AFUE measures the percentage of fuel converted into usable heat over the course of a year.

Understanding AFUE helps homeowners and energy auditors assess the performance of heating equipment. A higher AFUE percentage indicates a more efficient appliance, meaning less fuel is wasted and more heat is generated for the same amount of energy input. This metric is particularly important for consumers looking to reduce energy costs and environmental impact, as it can assist in making informed choices when buying or upgrading heating systems.

The other provided options do not accurately describe the standardized industry term for measuring heating efficiency, thereby reinforcing why Annual Fuel Utilization Efficiency is the correct choice.