Commercial dishwasher with a washing chamber in which at least one first dispensing device (100, 100') is arranged for dispensing a treatment liquid for cleaning items to be washed, wherein the washing chamber is delimited by one or more interior walls (61, 62, 63, 64), wherein the dishwasher is designed such that it is operable in at least two operating modes, wherein the dishwasher comprises a control device which is designed such that it is able to switch the dishwasher into an operating mode selected by a user or into an operating mode predetermined according to a washing program and to control the operation of the dishwasher, wherein the operating modes comprise at least one treatment mode for items to be washed and at least one vapor reduction mode, wherein the dishwasher comprises at least one second dispensing device for dispensing a vapor reduction liquid, which dispensing device is arranged in the washing chamber such that it may dispense the vapor reduction liquid directly and/or indirectly on at least one portion of at least one of the interior walls (60, 61, 62, 63) of the washing chamber when the dishwasher is in a vapor reduction mode, characterized in that the dishwasher comprises a vapor reduction liquid temperature sensor which is able to determine the temperature of the vapor reduction liquid, and/or comprises a washing chamber temperature sensor which is able to determine the temperature within the washing chamber, and/or comprises a humidity sensor which is arranged in the washing chamber and is able to determine the humidity within the washing chamber, wherein the control device is designed such that it sets the period of time, during which a vapor reduction liquid is dispensed within the vapor reduction mode, and/or a volume of the vapor reduction liquid which is dispensed during the vapor reduction mode, depending on the temperature of the vapor reduction liquid determined by the vapor reduction liquid temperature sensor and/or depending on the temperature within the washing chamber determined by the washing chamber temperature sensor and/or depending on a value within the washing chamber determined by the humidity sensor. the dishwasher is designed such that it is operable in at least two operating modes, wherein the dishwasher comprises a control device which is designed such that it is able to switch the dishwasher into an operating mode selected by a user or into an operating mode predetermined according to a washing program and to control the operation of the dishwasher, wherein the operating modes comprise at least one treatment mode for items to be washed and at least one vapor reduction mode, wherein the dishwasher comprises at least one second dispensing device for dispensing a vapor reduction liquid, which dispensing device is arranged in the washing chamber such that it may dispense the vapor reduction liquid directly and/or indirectly on at least one portion of at least one of the interior walls (60, 61, 62, 63) of the washing chamber when the dishwasher is in a vapor reduction mode, characterized in that the dishwasher comprises a vapor reduction liquid temperature sensor which is able to determine the temperature of the vapor reduction liquid, and/or comprises a washing chamber temperature sensor which is able to determine the temperature within the washing chamber, and/or comprises a humidity sensor which is arranged in the washing chamber and is able to determine the humidity within the washing chamber, wherein the control device is designed such that it sets the period of time, during which a vapor reduction liquid is dispensed within the vapor reduction mode, and/or a volume of the vapor reduction liquid which is dispensed during the vapor reduction mode, depending on the temperature of the vapor reduction liquid determined by the vapor reduction liquid temperature sensor and/or depending on the temperature within the washing chamber determined by the washing chamber temperature sensor and/or depending on a value within the washing chamber determined by the humidity sensor.