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Dictionary

en'ergy effi"ciency ra"tio

a measure of the efficiency of a heating or cooling system, as a heat pump or air conditioner, equal to the ratio of the output in B.T.U./hour to the input in watts: A high-efficiency home window air conditioner has an energy efficiency ratio of 7.5 or more. Abbr.: EER

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

energy band

energy level

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