Heating and / or air conditioning

The invention relates to a heating and / or air conditioning system for a motor vehicle (1) with an air guide housing (5), at least one mixing flap (6) and a plurality of air ducts which branch off from the mixing space (7) and (to nozzles 8 ', 9 ') run, with the air flows in the same regulating valves, wherein at least one of the air ducts to the corresponding air flow regulating valve (in the region of the nozzle 8' ', 10', 11 are arranged, 9 ', 10', 11 ') or in is formed, the nozzle (8 ', 9', 10 ', 11') are integrated.