Seasonal energy efficiency ratio
Cooling output divided by electricity input, as a standard for HVAC systems
Cooling output divided by electricity input, as a standard for HVAC systems
The seasonal energy efficiency ratio (SEER) is a measurement used to rate the efficiency of air conditioners. The SEER rating of a device is the cooling output during a typical cooling-season divided by the total electric energy input during the same period. The higher a device's SEER rating, the more energy efficient it is. SEER is defined for the United States by the Air Conditioning, Heating, and Refrigeration Institute, a trade association, in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. This defines SEER as the ratio of cooling in British thermal units (BTUs) to the energy consumed in watt-hours. The device testing protocol was changed in 2023 to include more accurately the energy used when cooled air is pushed through ducts. The revised protocol produces smaller numbers identified in documentation as SEER2 measurements. European legislation defines SEER as the reference annual cooling demand divided by the annual...
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