The Ceiling Fan Buying Guide
First you'll need to determine what blade width you'll need based on the square footage of your room. Here's how to measure the blade span of ceiling fans. BLADE SPAN: this is the diameter created by the ceiling fan's blades when it's rotating With an odd number of blades, measure the distance from the center of the fan to the blade tip. Then multiply that number by 2. With an even number of blades, you will have to measure the distance from one blade tip to it's opposing blade tip. RECOMMENDED BLADE SPAN room length x room width = square feet Hanging your ceiling fan at the appropriate height ensures that friends and family members won’t hit their heads on low hanging ceiling fans. It also guarantees that they'll be able to feel the airflow the fan produces since fans cool people, not rooms. There should be a 7-foot minimum distance between your ceiling fan’s blades and the floor. If you have low ceilings, or if you ha