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
ENERGY EFFICIENCY RATIO
Meaning of ENERGY EFFICIENCY RATIO in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012