Abstract: An automotive air conditioning apparatus is provided which, in raising the temperature inside a vehicle cabin from a low level to a preset higher level in a maximum cooling mode or in lowering the cabin temperature from a high level to a preset lower level in a maximum heating mode, suitably controls in an initial stage of the procedure the revolution speed of a blower but does not drive an air mix door at all to keep it at an existing opening degree. When the revolution speed of the blower reaches a predetermined lowest speed, the air mix door begins to be driven to vary its opening degree progressively and suitably while, at the same time, a first reference temperature level for deactivating a compressor associated with a cooler is shifted to a second reference temperature level.