Control method for a heating power in the thermodynamic loop of an air conditioning device

The method involves measuring a pressure (Pd) at an outlet of a compressor, and measuring a temperature (Tev) of air flow, infront or behind an evaporator (12). The temperature of air flow, infront or behind the evaporator is estimated. The temperature of air flow at an outlet of an air circulation duct (20) is estimated from the measured pressure and the temperature. The temperature of air flow heated by auxiliary conditioner (11) and/or heat exchange radiator is adjusted based on set point of the temperature of air conditioned air flow at the outlet of the duct.