abbr. seasonal energy efficiency ratio

An energy rating metric for cooling systems (air conditioners). SEER reports the cooling capacity (in Btu/hr) per Watt of electricity used in the system (fans, compressor, controls) when tested under conditions of 80°F indoor temperature with 50% indoor RH and 82°F outdoor temperature.

Related resource: BSD-113: Ground Source Heat Pumps ("Geothermal") for Residential Heating and Cooling—Carbon Emissions and Efficiency