Laundry treatment appliance comprising the following features: a treatment chamber, preferably a drum for receiving laundry, having an air inlet and an air outlet; a unit having - a heat pump having a compressor condenser as a heating device and an evaporator as a condensing device; - a fan (9, 10) for propelling process air through a circuit leading through the treatment chamber and the heating device; - a process air channel for connecting the unit to the air inlet and the air outlet of the treatment chamber; - an additional heating element located in the process air channel (8, 8a); - a control device for activating and deactivating the fan (10, 9), the compressor and the additional heating element for carrying out an automatic treatment process, further comprising - a steam generator having - a water tank for receiving or storing water; - a supply line for conducting the water from the water tank into the channel portion in which the additional heating element is arranged; - a dosing element which is connected upstream of the supply line for allowing the water to pass through or for blocking the flow of water through the line; - a distribution element for distributing the water emerging from the supply line, characterised in that the additional heating element is arranged in the channel in an at least predominantly vertical portion in front of the air inlet of the chamber, wherein the supply line projects into the air channel portion in which the additional heating element is located, wherein the distribution element is arranged above the additional heating element between the line end and the additional heating element in order to distribute the water flowing out of line end or to fan out the water flow so that it can evaporate on the activated additional heating element. a treatment chamber, preferably a drum for receiving laundry, having an air inlet and an air outlet; a unit having - a heat pump having a compressor condenser as a heating device and an evaporator as a condensing device; - a fan (9, 10) for propelling process air through a circuit leading through the treatment chamber and the heating device; - a process air channel for connecting the unit to the air inlet and the air outlet of the treatment chamber; - an additional heating element located in the process air channel (8, 8a); - a control device for activating and deactivating the fan (10, 9), the compressor and the additional heating element for carrying out an automatic treatment process, - a heat pump having a compressor condenser as a heating device and an evaporator as a condensing device; - a fan (9, 10) for propelling process air through a circuit leading through the treatment chamber and the heating device; - a process air channel for connecting the unit to the air inlet and the air outlet of the treatment chamber; - an additional heating element located in the process air channel (8, 8a); - a control device for activating and deactivating the fan (10, 9), the compressor and the additional heating element for carrying out an automatic treatment process, further comprising - a steam generator having - a water tank for receiving or storing water; - a supply line for conducting the water from the water tank into the channel portion in which the additional heating element is arranged; - a dosing element which is connected upstream of the supply line for allowing the water to pass through or for blocking the flow of water through the line; - a distribution element for distributing the water emerging from the supply line, - a steam generator having - a water tank for receiving or storing water; - a supply line for conducting the water from the water tank into the channel portion in which the additional heating element is arranged; - a dosing element which is connected upstream of the supply line for allowing the water to pass through or for blocking the flow of water through the line; - a distribution element for distributing the water emerging from the supply line, characterised in that the additional heating element is arranged in the channel in an at least predominantly vertical portion in front of the air inlet of the chamber, wherein the supply line projects into the air channel portion in which the additional heating element is located, wherein the distribution element is arranged above the additional heating element between the line end and the additional heating element in order to distribute the water flowing out of line end or to fan out the water flow so that it can evaporate on the activated additional heating element.