The crossword solution for the term MORE OFT is EER, which stands for 'Energy Efficiency Ratio'. Energy Efficiency Ratio is a measure of the energy efficiency of a particular appliance, such as an air conditioner or refrigerator. It is calculated by dividing the amount of energy used by the appliance over a certain period of time by the amount of energy it produces during that same period. The higher the ratio, the more efficient the appliance is.