If you’re trying to limit your A/C usage and relying on a fan at night, or if you…don’t have A/C, use this trick to make sure you’re making your room as cold as possible. Point your fan so that the air is blowing out the window. This will help suck any hot air out of your home and pull cooler air in from outside. Facing the fan in works, too, but it’s not quite as effective.

Get more tips for staying cool as the summer winds down.