A method for automatic hydraulic compensation of consumers in a heating and/or cooling installation for the purpose of preventing an under or oversupply of the consumers with a room temperature control superimposing the hydraulic compensation at the consumers or for the consumers, the heating and/or cooling installation being passed by a heat carrier medium, preferably water, and in which at least one hot and/or cold generator is provided, in the heating and/or cooling installation being connected, via a piping system, a plurality of consumers for heating and/or cooling rooms, in which the consumers are disposed, in the respective rooms room temperature measurement values being recorded, further at least one electrical or electronic computing unit being provided and at least one circulating pump being mounted in the piping system as well as a plurality of control fittings in the piping system for controlling the liquid flow through the respective individual consumers being mounted, further the control fittings being passed by the heat carrier medium, further the through-flow cross section being modified by means of an electrical or electronic transmission and reception unit and an associated actuator, by means of the transmission device of the transmission and reception unit information or data about the current through-flow cross section being sent to the computing unit, processed therein and converted into predetermined target values that are sent to the reception device of the transmission and reception unit, by means of which the through-flow cross section is adjusted, the predetermined target values of the individual control fittings being set depending on at least the heating or cooling behavior of the individual rooms and/or further characteristics in such a manner that all consumers obtain the volume flow according to their needs, the heating or cooling installation being automatically hydraulically compensated, furthermore a room temperature control superimposing the predetermined target values being effected depending on the temperature difference between the actual value of the room temperature and the target value of the room temperature of the individual rooms by changing the through-flow cross section of a through-flow control unit of the control fittings, characterized by that the pressure difference between pressure regions before and behind the through-flow control unit of the control fittings is held constant, the heating or cooling behavior of the individual rooms is detected by means of the room temperature measurement values recorded in the rooms and a simultaneously made time measurement of the computing unit and compared to a temperature/time profile stored for every room and that the liquid flow through the individual consumers is modified by changing the through-flow cross section of the through-flow control unit of the control fittings, until the detected actual value of the room temperature of the individual rooms matches the target value of the room temperature stored in the time profile and the predetermined target values of the room temperature of the individual rooms are achieved as fast as possible and simultaneously.