Method for manufacturing an electrical heating device

The method involves enclosing a medium through-flow circulation chamber in housing and protruding circulation chamber into which heating ribs is heat-conductive contacted to positive thermal coefficient heating element. A control unit is provided with one printed circuit board. The printed circuit board is accommodated in control housing and provided with power loss-producing control unit (98). A cooling element is pressed with the pressure force from the power loss-producing control unit in control housing. A control housing frame is made of aluminum extrusion.