Mini Split Seer is its seasonal energy efficiency ratio and the higher the better! A SEER rating is the ratio fo the cooling output of an air conditioner over the typical cooling season. Think of it kind of like you would miles per gallon (MPG) for your car. They can rage from a low SEER rating, around 13, to a high seer rating, around 21 SEER. As previously mentioned, the higher the SEER the better. We carry systems that go up to 23.5 SEER!! Imagine your energy savings!! Take a look at the systems we carry and find your next high SEER Mini Split here at the warehouse.