Short Answer: No. Running ceiling fans all day in every room of your home will NOT keep your home cooler.
Ceiling fans will make you feel cooler when you stand in a room where one is running, but they don’t actually cool the air in your home. They only make you feel cooler because of the wind chill factor: by moving the air, it feels like a breeze is cooling your skin.
A ceiling fan that’s running in an unoccupied room is using electricity without doing any good. Turn off your ceiling fans when you leave a room and flip them on when you come back in.
Do install ceiling fans, especially in rooms where your family tends to congregate. A ceiling fan will allow you to raise the thermostat setting about 4 degrees with no reduction in comfort. If you tend to run on the hot side, having that nice moving air makes a world of difference in the middle of the summer.
###
Photo Credit