The ornamental design for a airpurifierhousing, as shown and described.
FIG. 1 is a front left perspective view of an air purifier housing showing my design.
FIG. 2 is a front right perspective view thereof.
FIG. 3 is a front view thereof.
FIG. 4 is a top view thereof.
FIG. 5 is a right side view thereof.
FIG. 6 is a left side view thereof; and,
FIG. 7 is a rear perspective view thereof.
The broken lines shown herein are for illustrative purposes only and form no part of the claimed design. The rear and bottom of the air purifier housing are not being claimed as part of the design.