Ceiling Fans and Energy Efficiency
Ceiling fans don't actually lower the temperature of a room like an air conditioner. But by spinning the air, they do make the room feel cooler.
Best of all, ceiling fans use only about as much energy as a 100-watt light bulb. Studies show that by setting ceiling fans to spin in a counter-clockwise pattern, you can save as much as 40% off summer cooling bills -- without sweltering. Simply set the thermostat a few degrees higher and flip on the fan.
In the winter, ceiling fans move warm air back to the center of the room, pushing it down from the ceiling.
It can be 10-15 degrees hotter with tall ceilings than on the floor.
Studies also reveal that ceiling fans can help homeowners save as much as 10% on their heating bills. Switch the direction of the blades to spin clockwise and turn on the fan.