What is Seer?

SEER is  the Seasonal Energy Efficiency Ratio.



Ok great but what does this exactly mean? Basically it's an efficiency rating similar to what cars use when using mpg to rate their fuel consumption. Except in this case, it's for power consumption.



To keep things simple, the higher the SEER rating of a unit, the more efficient it is.  So, the higher the SEER rating, the greater the btu/h cooling delivered for the watts of electricity consumed (better miles per gallon, so to speak)



These days, the minimum SEER rating is 13 on mini split systems. This regulation was put in place by the government to enforce efficient systems. SEER 13 systems are already quite efficient especially in northern states because typically they aren't turned on continuously. For southern states, it is recommended to purchase at least 15 SEER systems as homes will benefit from the additional energy savings.


You can find more detailed information on wikipedia about this subject matter.