Heating device controlling method, heating device with controlling means designed for carrying out this method, and method for determining one value

Method for controlling a motor vehicle heating unit, based on the actual temperature value (I), has the following steps: (a) measurement of the temperature value (mi) (b) comparison of the measurement value with the current determined actual value (c) if the difference between measurement and actual value exceeds a threshold, adjustment of a counter value (A, B) (d) when the counter value reaches a predetermined reference value, alteration of the actual value by an alteration amount (d) (e) command of the heater according to the alteration amount (f) repetition of steps a - e. The invention also relates to a corresponding motor vehicle heating device and a method for determination of an actual temperature value from a multiplicity of sequential measurement values.