EER (Energy Efficiency Rating)
more HVAC definitions
EER is an abbreviation for Energy Efficiency
Rating. The Air-Conditioning and Refrigeration Institute standardized
this rating, which reports central air conditioning efficiency at 80 degrees F
indoors and 95 degrees F outdoors. This rating measures steady-state efficiency --
that is, the efficiency of the air conditioner once it is up and running.
The SEER (Seasonal EER) rating is
available for residential central air conditioners, and is generally
considered a more reliable indicator of the overall energy efficiency of
the unit than the EER.
While the SEER has been criticized for not taking
into account the efficiency of the system while under partial load,
there is no widely available rating which accounts for this issue in
residential air conditioners. (However, the
IPLV measures partial load efficiency in non-residential units.)
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