The 4 to 5 Ton 18 Seer MrCool Universal Central Heat Pump System is one of the most high performing, versatile, and simple heating and cooling products available from the industry today. This is a central heat pump that can cool better than most air conditioners, heat better than virtually any other heat pump, compete with traditional furnaces in cold weather, and reduce energy consumption thanks to its sophisticated internal controls. It even comes with new technology that makes HVAC installation faster and simpler than a traditional heat pump. Basically, the MrCool Universal has it all.