Annual Fuel Utilization Efficiency (AFUE)
3 definitions

Annual Fuel Utilization Efficiency (AFUE)

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.

Annual Fuel Utilization Efficiency (AFUE)

Combustion heating equipment efficiency is expressed in terms of AFUE. New equipment typically ranges from about 78% to 96% AFUE. Higher AFUE ratings indicate more efficient equipment.

Annual Fuel Utilization Efficiency (AFUE)

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.

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About this term

Annual Fuel Utilization Efficiency (AFUE) has been defined 3 different ways in documents like Glossary of Terms, Building Energy Codes Program Glossary, Glossary of Energy Terms.

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