Measuring Ceiling Fan Blade Size

Ceiling fan size guide.

Measuring ceiling fan blade size.

A room with up to 75 square feet can. Larger ceiling fans tend to be have a larger drop from the ceiling so you need to take their drop into consideration when picking what size ceiling fan you want to install. If the unit has an odd number of ceiling fan blades such as a five blade fan measure from the tip of a blade to the center of the fan to determine the radius. Ceiling fans are measured by the full size of their blade span also called blade sweep which is the diameter of the circle that you see when the fan blades are in motion.

Multiply this number by 2 and you have your blade span or fan size. Or in other words fan blade span reaches from the tip of one fan blade to the tip of the blade directly across. Most but not all ceiling fans sold today are in 52 inch or 42 inch sizes. Once you know how large your ceiling fan s size is you will need to measure the size of your room.

If your fan has an odd number of blades then measure from the tip of one blade to the center of the fan and double that number for your measurement. Compare the fan blade sweep or diameter to the room s square footage to determine the right ceiling fan for your room. The american lighting association recommends the following guidelines for room and ceiling fan size. Most replacement 52 blades are around 20 5 inches in length.

This is the diameter of the fan area and the size of the fan blade. Ceiling fan size guide. The sizes and associated blade spans are shown below in the table. X research source the american lighting association recommends that you should put a ceiling fan at least 7 feet 2 1 m above the floor.

Reason why is that when the blades and fan are installed the 52 are the final width of the fixture. If the ceiling fan has an even number of blades 2 4 measure the distance from the tip of one blade to the tip of the blade on the opposite. Then double that amount to determine the diameter. If the ceiling fan has an odd number of blades 3 5 measure the distance from the center of the fan to the tip of any of the blades.

This goes for the blade and arms. Ceiling fan blades range from 29 inches to 54 inches. Determine what the distance is from the tip of the first blade to the tip of the second blade. It will measure 32 inch or smaller 34 36 38 42 44 46 48 52 54 56 58 60 or even 70 inches across.

While the table is a general guide for ceiling fan sizing based on your room s dimensions other factors for determining the best ceiling fan size for your room include the room type and layout.