Heater

[0001]FIG. 1 is a top front perspective view of a heater showing our new design;

[0002]FIG. 2 is a bottom rear perspective view thereof;

[0003]FIG. 3 is a front view thereof;

[0004]FIG. 4 is a rear view thereof;

[0005]FIG. 5 is a left view thereof;

[0006]FIG. 6 is a right view thereof;

[0007]FIG. 7 is a top view thereof; and

[0008]FIG. 8 is a bottom view thereof.

[0009]FIG. 9 is a top front perspective view of a second embodiment of the claimed design;

[0010]FIG. 10 is a bottom rear perspective view thereof;

[0011]FIG. 11 is a front view thereof;

[0012]FIG. 12 is a rear view thereof;

[0013]FIG. 13 is a left view thereof;

[0014]FIG. 14 is a right view thereof;

[0015]FIG. 15 is a top view thereof; and,

[0016]FIG. 16 is a bottom view thereof.

[0017]The broken lines in the drawings show portions of the heater and form no part of the claimed design.