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A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z   entire Web this site seasonal energy efficiency ratio (SEER) A measure of the seasonal or annual efficiency of a central air conditioner or air conditioning heat pump. SEER takes into account the variations in temperature that can occur within a season and is the average number of BTU (British thermal units) of cooling delivered for every watt-hour of electricity used by the heat pump over a cooling season. It is determined using specified federal test procedures. The higher the SEER, the more efficient the unit and the lower the operating cost.See also seasonal performance factor. Related category    • COOLING, REFRIGERATION, AND AIR CONDITIONING Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP