Bivalent heat pump
Using a special control system, an existing heating boiler can be operated in an energy-saving mode in addition to the heat pump. The boiler is then only switched into the circuit when the outside temperature is very low. The point at which this occurs depends largely on the heat demand and the heat insulation of the building and on the performance of the heat pump.
As a cost-saving auxiliary heating system, the air heat pump alone provides the heat for heating and domestic water in the summer 6 months and in the mild transition periods. In the winter the existing boiler installation provides heat for the house either additionally or exclusively.