The invention relates to a device for controlling the temperature of a running thread, comprising a plurality of heating devices arranged successively along the grain. A first heating device comprises a heating chamber which is indirectly heated by at least one gas flame and extends between a thread inlet and a thread outlet. A second heating device arranged downstream from the first heating device is provided for further control of the temperature of the thread. In order to heat the thread through as far as possible at a pre-determined thread temperature, the second heating device has a heated thread contact surface on which the thread can be guided in such a way that it is in contact therewith.