HEATING DEVICE WITH PROTECTION MEANS FOR A MOTOR VEHICLE COMPRISING A HEATING ELEMENT AND A HOUSING, AND AIR-CONDITIONING FACILITY COMPRISING SAID SAME DEVICE

Heating device (2) comprising at least one heating element (3) and a housing (4). The device according to the invention is characterized in that the housing further comprises a protection means (10) made in the form of an envelope composed of at least one half-shell (6) partially surrounding at least said housing. The invention also relates to a heating, ventilation and/or air conditioning installation for a motor vehicle comprising such a heating device.