The ornamental design for a body for a portableheater, as shown and described.
FIG. 1 is a right side front perspective view of a body for a portable heater showing my new design;
FIG. 2 is a right side rear perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a rear elevation view thereof; and,
FIG. 7 is a top plan view thereof.
The broken line showing of front grill, rear grill, controls and base in FIGS. 1–7 is for illustrative purposes only and forms no part of the claimed design.