As counterintuitive as it may seem, a ceiling fan is useful in the winter months as a way to lower your heating bill.
Run a ceiling fan on low, with the switch set for an upward flow of air, to nudge the hot air near the ceiling back down along the walls and into the rest of the room, where it will rise again. A low fan speed is advised; this will avoid drafts, but circulate the warm air rather than letting it be wasted on high.
In the summer, the fan should be set to blow air downward, and higher speeds may be used, to keep a room’s occupants feeling cool through the evaporation of moisture from the skin.
Ceiling fans use relatively little energy and will help you make the most of your heat in winter and also reduce or eliminate the need for air conditioning in summer—both excellent reasons to join the fan club!