Increase the comfort of your domestic hot water heating with this innovative Stiebel domestic hot water heat pump. This WWK-I domestic hot water heat pump offers an excellent introduction to renewable energies and is ideal for detached or semi-detached houses. Independent of the existing heating system, it mainly utilises free environmental heat, such as the waste heat from the heating system in the installation room. Using the environmentally friendly refrigerant propane, the appliance is particularly energy-efficient and can be operated with self-generated electricity from a photovoltaic system if required.