How a Ceiling Fan Cools:
Ceiling fans operate on the same principle. By providing a breeze, ceiling fans make you feel cooler, while not actually lowering the room temperatures.
What this means is that, instead of setting the thermostat at 22c degrees in the summer, a homeowner can turn on the ceiling fan, set the thermostat at 25c or even 27c degrees, and still feel just as cool. That can result in tremendous energy savings as much as 40% off summer cooling bills.
Even running on high speed, a ceiling fan typically uses less energy than a 100-watt light bulb. Of course, many people prefer to go without air conditioning altogether for much of the time. For them, the natural breeze provided by a ceiling fan is an ideal and even more economical option.