Heating, ventilation and/or air conditioning installation for motor vehicle passenger compartment

A heating, ventilation and/or air conditioning installation for supplying temperature-controlled air to ¢ at least one front zone (1a) and ¢ at least one rear zone (1b) of a vehicle cabin, is characterized in that ¢ the installation comprises two separate air treatment modules (3a, 3b) arranged between o the front zone (1a) and o the rear zone (1b).