... water heater heat pump heating: 4.5kW, 8kW, 13.5kW cooling: 3.5kW, 7.2kW, 12kW CE,CCC,ISO9001,ISO14001 Air source and water ... from the heat pump could be fully utilized. 1 Heat Pump CycleLike refrigeration machines, most heat pumps ... COP(heating) is greater than COP(cooling) by 1. It is because heat energy delivered by a ... can be up to around 5.1 Air to WaterAir-to –water heat pumps are those which extract ...