Heater for Electric Fireplace

FIG. 1 is a perspective view of a heater for electric fireplace showing my present 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; and, FIG. 8 is a rear and top schematic view in a use state thereof. The broken line shown in the drawings are for the purpose of illustrating portions of the heater for electric fireplace and form no part of the claimed design.