A laundry dryer comprising - a drum wherein the laundry to be dried is placed, - an air duct through which processing air is circulated by means of a fan, - a compressor effecting cycle of refrigerant, - a heat exchange unit having an evaporator and a condenser, said evaporator providing the processing air in the air duct to be dehumidified, said condenser providing the dehumidified processing air to be heated, - a refrigerant line providing the refrigerant pressurized by the compressor to pass through the condenser and the evaporator to be redelivered to the compressor, - a water receptacle in fluid communication with the heat exchange unit such that condensate water is transferrable to said water receptacle, characterized in that the laundry dryer comprises further - a weight measurement device to which a bottom plate of the water receptacle is flexibly connected such that the weight of the condensate water over the entire surface of the bottom plate is measurable, - an electronic control unit in electrical communication with said weight measurement device configured to monitor dynamically the actual amount of water in the water receptacle as well as the rate of change of the same in unit time, the electronic control unit being further configured to process the total amount of the condensate water, the rate of change thereof per unit time and the temperature of humid air leaving the drum such that the obtained data is compared with a preloaded data set to verify level of dryness, wherein the electronic control unit is configured to compare the predetermined values of the rate of change with the actual ones to make a timely estimation that the drying cycle is to be terminated, wherein said temperature is used to verify the decision as to terminate the drying cycle. - a drum wherein the laundry to be dried is placed, - an air duct through which processing air is circulated by means of a fan, - a compressor effecting cycle of refrigerant, - a heat exchange unit having an evaporator and a condenser, said evaporator providing the processing air in the air duct to be dehumidified, said condenser providing the dehumidified processing air to be heated, - a refrigerant line providing the refrigerant pressurized by the compressor to pass through the condenser and the evaporator to be redelivered to the compressor, - a water receptacle in fluid communication with the heat exchange unit such that condensate water is transferrable to said water receptacle, characterized in that the laundry dryer comprises further - a weight measurement device to which a bottom plate of the water receptacle is flexibly connected such that the weight of the condensate water over the entire surface of the bottom plate is measurable, - an electronic control unit in electrical communication with said weight measurement device configured to monitor dynamically the actual amount of water in the water receptacle as well as the rate of change of the same in unit time, the electronic control unit being further configured to process the total amount of the condensate water, the rate of change thereof per unit time and the temperature of humid air leaving the drum such that the obtained data is compared with a preloaded data set to verify level of dryness, wherein the electronic control unit is configured to compare the predetermined values of the rate of change with the actual ones to make a timely estimation that the drying cycle is to be terminated, wherein said temperature is used to verify the decision as to terminate the drying cycle.