Household appliance with a heat pump comprising a first heat exchanger arranged within an air duct of the household appliance and a second heat exchanger, wherein the heat pump comprises means for reversing a flow direction of a refrigerant through the heat pump, wherein the household appliance comprises means for supplying water to the second heat exchanger which is configured to transfer heat from the refrigerant to the water in a first operation mode of the heat pump, in which the second heat exchanger is operated as a condenser and to transfer heat from the water to the refrigerant in a second operation mode of the heat pump, in which the second heat exchanger is operated as an evaporator, characterized by - a further air duct connected to a washing chamber of the household appliance, and means (26, 27) for supplying at least a portion of the water coming from the second heat exchanger into the further air duct, - the air duct having a first inlet for outside air, and blower means being provided for conveying the outside air towards the first heat exchanger in the first operation mode; - the air duct having a first outlet for discharging air into the surroundings of the household appliance in the first operation mode; - the air duct having a second inlet for air coming from a washing chamber of the household appliance, wherein the blower means is provided for conveying the air towards the first heat exchanger in the second operation mode; - the air duct having a second outlet for recirculating air coming from the washing chamber of the household appliance back into the washing chamber in the second operation mode; - a valve element for opening the first outlet and closing the second outlet in the first operation mode and for closing the first outlet and opening the second outlet in the second operation mode and - a valve element for opening the first inlet and closing the air duct against the further air duct in the first operation mode and for closing the first inlet and opening the air duct against the further air duct in the second operation mode. - a further air duct connected to a washing chamber of the household appliance, and means (26, 27) for supplying at least a portion of the water coming from the second heat exchanger into the further air duct, - the air duct having a first inlet for outside air, and blower means being provided for conveying the outside air towards the first heat exchanger in the first operation mode; - the air duct having a first outlet for discharging air into the surroundings of the household appliance in the first operation mode; - the air duct having a second inlet for air coming from a washing chamber of the household appliance, wherein the blower means is provided for conveying the air towards the first heat exchanger in the second operation mode; - the air duct having a second outlet for recirculating air coming from the washing chamber of the household appliance back into the washing chamber in the second operation mode; - a valve element for opening the first outlet and closing the second outlet in the first operation mode and for closing the first outlet and opening the second outlet in the second operation mode and - a valve element for opening the first inlet and closing the air duct against the further air duct in the first operation mode and for closing the first inlet and opening the air duct against the further air duct in the second operation mode.