Topical Terminology > Afue (Annual Fuel Utilization Efficiency)
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Afue (Annual Fuel Utilization Efficiency)
For Afue (Annual Fuel Utilization Efficiency) we have a term and definition in Energy.
Afue (Annual Fuel Utilization Efficiency) (Energy) 
A measure of heating efficiency, in consistent units, determined by applying the federal test method for furnaces. This value is intended to represent the ratio of heat transferred to the conditioned space by the fuel energy supplied over one year. [See California Code of Regulations, Title 20, Section 1602(d)(1)]
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