An automobile air conditioner which has a generally elongated casing having air intake and outlet grilles defined at opposite sides thereof, a generally elongated evaporator accommodated within the casing so as to extend generally parallel to the direction of elongation of the casing and positioned adjacent the air intake grille, at least one cross-flow fan accommodated within the casing so as to extend generally parallel to the direction of elongation of the casing and positioned between the evaporator and the air outlet grille, and a drive unit for driving the cross-flow fan in one direction for blowing air from the inlet grille to the air outlet grille. The evaporator is supported in position within the casing in a tilted fashion with its upper edge towards the cross-flow fan.