Introducing the 4th Generation MrCool 3-zone ductless heat pump condenser which is one of the most capable heat pumps on the market. When this 3-zone condenser is matched with select MrCool air handlers, it can produce a highly effective 22 SEER efficiency rating. It can also provide heating performance all the way down to -13 degree fahrenheit. With its gold fin condenser coating, it is sure to withstand the seasons.