Vehicle heating and/or air conditioning with improved air mixing

摘要

The motor vehicle heater or air conditioner has a cold air duct (12) and a hot air duct (14) receiving a heating radiator (18). A mixing chamber (28) communicates with the air outlets (24,26) and has a mixing flap (30). In the hot position, the flap closes the cold air duct by moving towards the hot air duct, promoting mixing of hot and cold air.