... provide the hot water. 3)Type: Side discharge swimming pool heat pump and Top discharge swimming pool heat pump. 4)Capacity ... .5kw, 4.2kw, 7kw, 9kw, 12kw, 15kw & 20kw for side discharge swimming pool heat pump. 4.2KW, 5.3KW, 8KW, 12KW ... for top discharge swimming pool heat pump. 5)Gas: R407C mainly. 6) ... or heat the swimming pools. Swimming Pool Heat Pump Unit Horizental