Motor vehicle with air conditioning

To avoid to be inserted into the channel system of a vehicle air conditioning rubber hoses which are intended to prevent the transmission of vibrations to the vehicle body, the pipe strings of an air conditioner are provided integrally of metal and having an outer diameter which, based on the compressor discharge side smaller than 11 mm and the suction side smaller than 13 mm. Furthermore, an attenuation curve is shown in the compressor connected with a heat exchanger pipe sections (6 ', 12') in addition to at least one caused by the installation geometry of the duct system of curvature (37-40) (35, 36) are provided. Also, a tubing string, in which a throttling of the flow of the operating means should be provided functionally, to be particularly thin tube made with a for throttling the flow particular, kapillarrohrartigen inner diameter and an outer diameter in the range of 2 to 4 mm.