Understanding EER: What Is A Good EER Rating For AC? EER rating provides you with a ratio of useful cooling output (in BTU/h) to electricity input (measured in W). A better EER rating means a home air conditioner unit will provide tons of cooling effect for each Watt of energy you provide.
EER rating provides you with a ratio of useful cooling output (in BTU/h) to electricity input (measured in W). A better EER rating means a home air conditioner unit will provide tons of cooling effect for each Watt of energy you provide.