Device for motor-vehicle heating and/or air conditioning with improved blower

A device for heating and/or air conditioning a motor-vehicle passenger compartment, comprising an air-inlet chamber suitable for being fed with outside air or with recirculated air, a blower linked to the air-inlet chamber for producing a blown airflow, treatment and distribution means fed by the blower for producing a treated airflow and distributing it among various vents opening out into the passenger compartment, wherein the air-inlet chamber and the blower are adapted for being installed in a rear part of the vehicle, while the treatment and distribution means are adapted for being installed in a front part of the passenger compartment and wherein a connecting duct is provided for connecting the blower to the treatment and distribution means.