FIG. 1 is a front perspective view of an air conditioner, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is another front perspective view the air conditioner in FIG. 1;
FIG. 9 is another front view of the air conditioner in FIG. 1;
FIG. 10 is another rear view of the air conditioner in FIG. 1;
FIG. 11 is another left-side view of the air conditioner it FIG. 1;
FIG. 12 is another right-side view of the air conditioner in FIG. 1;
FIG. 13 is another top view of the air conditioner in FIG. 1; and,
FIG. 14 is another bottom view of the air conditioner in FIG. 1.
The even-dash broken lines illustrating portions of the air conditioner form no part of the claimed design.