by Mark Hansberger on July 15, 2014July 15, 2014 SEER, EER and COP: Understand These Terms Before You A/C Shop The terms SEER, EER and COP are used to define the efficiency of an air conditioning system. They are important indicators of how much energy an A/C uses, and are a good way to gauge […]Read More Filed Under: Energy Efficiency Tagged With: A/C– air conditioning compressor– air conditioning system– Arizona– Coefficient of Performance– COP– EER– energy efficiency ratio– hvac systems– Seasonal Efficiency Ratio– SEER– Yuma