A conditioning system for a vehicle passenger seat, comprising: at least one conditioning unit comprising a Venturi device configured to generate air flow relative to a seat element and a heating element configured to heat the Venturi device; a temperature sensor configured to sense a temperature in relation to the at least one conditioning unit; and a controller communicatively coupled to the temperature sensor and operably coupled to the at least one conditioning unit; wherein the controller is operable for operating the at least one conditioning unit in a first operating condition in which the Venturi device is activated and the heating element is inactive, and a second operating condition in which both the Venturi device and the heating element are activated; characterized in that: the Venturi device comprises a main body having a compressed air inlet configured to be coupled in fluid communication to a compressed air source, an ambient air inlet for fluid communication with ambient air of an air column provided in a cushion assembly rigid support (26, 28) of the vehicle passenger seat, and an air outlet for directing the generated air flow from the Venturi device towards a cushion assembly (22, 24); and the heating element is implemented as a sheet positioned in direct physical contact against an outer surface of the main body. at least one conditioning unit comprising a Venturi device configured to generate air flow relative to a seat element and a heating element configured to heat the Venturi device; a temperature sensor configured to sense a temperature in relation to the at least one conditioning unit; and a controller communicatively coupled to the temperature sensor and operably coupled to the at least one conditioning unit; wherein the controller is operable for operating the at least one conditioning unit in a first operating condition in which the Venturi device is activated and the heating element is inactive, and a second operating condition in which both the Venturi device and the heating element are activated; characterized in that: the Venturi device comprises a main body having a compressed air inlet configured to be coupled in fluid communication to a compressed air source, an ambient air inlet for fluid communication with ambient air of an air column provided in a cushion assembly rigid support (26, 28) of the vehicle passenger seat, and an air outlet for directing the generated air flow from the Venturi device towards a cushion assembly (22, 24); and the heating element is implemented as a sheet positioned in direct physical contact against an outer surface of the main body. the Venturi device comprises a main body having a compressed air inlet configured to be coupled in fluid communication to a compressed air source, an ambient air inlet for fluid communication with ambient air of an air column provided in a cushion assembly rigid support (26, 28) of the vehicle passenger seat, and an air outlet for directing the generated air flow from the Venturi device towards a cushion assembly (22, 24); and the heating element is implemented as a sheet positioned in direct physical contact against an outer surface of the main body.