The present invention relates to a method for controlling a thermoregulated ventilation circuit (100) equipped with a control unit (40) and comprising an active humidifier (10).The active humidifier (10) further comprises, in turn, a cartridge (20) equipped with a humidification chamber (21) adapted to contain water to be heated for the humidification of the air through a heating element (30), and the thermoregulated circuit (100) further comprising at least one intake tube (120) for conveying the air exiting said cartridge and provided with heating means (123) for heating the air exiting said cartridge (20). The method according to the present invention is characterised in that said control unit (40) receives in input the patient's temperature data (Tp) detected by a patient's temperature probe (132) and regulates the operation of said heating element (30) of said cartridge (20) and the operation of said heating means (123) of the air exiting said cartridge (20) as a function of said patient's temperature (Tp).