The ornamental design for a ceilingfanhousing, as shown and described.
FIG. 1 is a bottom perspective view of a ceiling fan housing showing my new design;
FIG. 2 is a front elevational view thereof, the rear elevational view, the left side elevational view, and the right side elevational view being substantially the same thereof;
FIG. 3 is a top plan view thereof on a reduced scale; and,
FIG. 4 is a bottom plan view thereof on a reduced scale.