Making use of ceiling fans can help keep the indoor air cooler and feel refreshing. Using a ceiling fan allows you to raise the programmable thermostat by 4 degrees with little to no noticeable difference in comfort. But when you have a ceiling fan on in the room you’re in, remember to turn it off when you leave. Ceiling fans do not actually lower the air temperature; they keep us feeling cool because of the wind chill effect. Leaving a ceiling fan on in the room when nobody is in that room wastes energy and does little to keep your home cooler.