Select the Right Fan
If you are mounting a ceiling fan in a space with very high ceilings, select a model with a pole extender. If you are installing the fan on a low ceiling, select a flush mount model.
Choose the fan blade length according to the size of the space you wish to cool. The larger the room, the longer the blade size. Blade lengths are measured from the tip of one blade to the tip of the blade on the other side.
If you purchase an outdoor ceiling fan equipped with a light, make sure the light is also rated for outdoor use.