(Combo) high temperature heat pump Split System heat water to 65 degrees. -7degree ~48degree Refrigerant: R290 The Hot Water / Split heat pump System (Combo) has been designed to allow the wasted hot energy from a standard air conditioning system to be used to heat water to a maximum of 65 degrees. In this mode it produces the hot water FREE from all energy costs. The HWS/Split Combo uses R290 ...