energy-efficiency ratio [EER]

In by Jackie Dunn

A measure of the instantaneous energy efficiency of cooling equipment. EER is the steady-state rate of heat-energy removal (or cooling capacity) by the equipment in BTU/h divided by the steady-state rate of energy input to the equipment in watts. This ratio is expressed in BTU/h per watt (BTU/h/watt). EER is based on tests performed in accordance with AHRI 210/240 (AHRI 2003).

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