SEER (Seasonal Energy Efficiency Ratio) is the measure of efficiency by which the cooling process of air conditioners, refrigerators and heat pumps is rated. The higher the SEER number, the greater the efficiency—and therefore the greater your energy savings.
Work Step by Step
The SEER rating of a unit is the cooling output during a typical cooling-season divided by the total electric energy input during the same period. The higher the unit's SEER rating the more energy efficient it is. In the U.S., the SEER is the ratio of cooling in British thermal unit (BTU) to the energy consumed in watt-hours.