"Waterproof Cooling Fan" in the winter can help reduce energy consumption by up to 15%. In a heated room air temperature change layer; in the ceiling near the air than warm air close to the ground, because warm air rises. "Waterproof Cooling Fan" can help push the warm air trapped near the ceiling down into the room, so stratified layer of warm air. Therefore, the local circulation of warm air needed for the heating system is not overworked, to a warm room. To correct, layered heating the room, "Waterproof Cooling Fan" should be run in a clockwise direction. This pushes the air down on the ceiling and walls, gently re-circulate warm air, cold without creating a cooling effect.