You may have heard the term “SEER Rating” used during discussions about Air Conditioning systems. “SEER” is an acronym that stands for “Seasonal Energy Efficiency Ratio”. What does this mean? In short, it is a measure of the efficiency at which the system uses electricity.
A better way to think of a SEER rating is “MPG”, or miles per gallon, of the AC system. A system that is properly sized for your home will cool it just fine, but some systems will do it for less electricity than others. This means a lower electric bill for you.
As a rule, a system with a higher SEER rating may cost more up front, but will save you more over the life of the system. The minimum system SEER rating that can be manufactured is 13 SEER.