An ornamentaldesign for a hot water tank housing, as shown and described.
FIG. 1 is a front perspective view of a hot water tank housing according to our new design;
FIG. 2 is a rear perspective view of the hot water tank housing of FIG. 1;
FIG. 3 is a front elevation view of the hot water tank housing of FIG. 1;
FIG. 4 is a rear elevation view of the hot water tank housing of FIG. 1;
FIG. 5 is a right side elevation view of the hot water tank housing of FIG. 1;
FIG. 6 is a left side elevation view of the hot water tank housing of FIG. 1;
FIG. 7 is a top plan view of the hot water tank housing of FIG. 1; and,
FIG. 8 is a bottom plan view of the hot water tank housing of FIG. 1.
In the drawings, the evenly spaced broken lines shown in the Figures depict portions of the hot water tank housing that form no part of the claimed design. The dash-dot-dash broken lines define the boundary of the claimed design and form no part of the claimed design.