Abstract: A heating/air-conditioning installation for a motor vehicle has a thermal loop which includes a refrigerating compressor, a gas cooler, a pressure-reducing valve, an evaporator, and a heating element. The gas cooler and the heating element are grouped together into a single exchanger including a main module forming a main fluid-carrying heat exchanger.

Abstract: A heating/air-conditioning device suitable for housing in a vehicle instrument panel includes an evaporator, a heating radiator, an air-distribution means with first and second deflector means, and a blower. The blower sends an airflow through the evaporator and the heating radiator. The evaporator has a principal surface in a first principal plane and the heating radiator has a principal surface in a second principal plane. The evaporator is traversed by the airflow in a first direction substantially perpendicular to the first principal plane. The first deflector means then divert the airflow into a second direction substantially perpendicular to the second principal plane with part of the airflow passing through the heating radiator. The second deflector means then diverts the airflow into a direction substantially parallel to the second principal plane. The air-distribution means diffuses the airflow into a passenger compartment of the vehicle.