HEATING AND/OR AIR CONDITIONING METHOD FOR A VEHICLE

The present invention relates to a method for heating and/or air conditioning a passenger compartment of a motor vehicle using a reversible refrigeration circuit in which a refrigerant fluid comprising 2,3,3,3-tetrafluoropropene circulates. This method is particularly suitable when the outside temperature is below -15° C. It is also suitable for hybrid motor vehicles that are designed to operate alternately on internal combustion engine and electric motor.