... as high as 4.5.Extensive application:it is suitable for hotel, hospital, factory, restaurant, school, sauna center, barbershop, ... heat room, laundry, industrial using water etc. Swimming pool wind-cooled air source heating and cooling integration unitModel XSD-3H-D ... DB temp: 35/24, inlet temp27 ;Heating working condition: Outdoor DB temp: 24/19, inlet temp27. swimming pool heat pump water heater