You will need to measure the space where you plan to install your outdoor ceiling fan. To be sure that your ceiling fan will fit, you need to measure the width of the area where you plan to install it. Because outdoor ceiling fans hang down from the ceiling it is also important to take a measurement of how low the fan can comfortably hang from the ceiling without getting in the way. This step is especially important in a home who’s outdoor living space that has low ceilings. If your ceiling is low don't fret - they do make outdoor ceiling fans designed with a hugger kit for low ceilings that don't hang down as far as standard ceiling fans.
However, before you start shopping you need to know what size of fan can fit in your room. A standard size fan measures 52” in circumference. There are larger and smaller sizes available. Write down the approximate maximum size of fan that can comfortable fit in your room based on your measurements. This will help greatly to narrow down your choices when shopping for outdoor ceiling fans.
Fans come in a variety of shapes, colors and styles, what is most important is the type of fan you will need. Choices range from interior, damp and wet location fans. Damp and wet location fans can be used in the open air. A wet location fan can be directly rained on. Also be aware that electronic controllers will not work outdoors, because of the moisture in the air the electronics within the components will not hold up.