How Big Should A Ceiling Fan Be?

There are some basic rules of thumb for determining the right size ceiling fan for a given space, although lots of variables must also be considered. Rarely is a space wide open, without dividers, racking, furniture or other obstructions. However, the following guidelines are a good place to start:

For most industrial and commercial large-diameter ceiling fans:

  • The square footage of the space in which a fan is going should be 5-7 times the diameter of the fan. In other words, a 14-ft fan (measured from tip to tip at its widest point) would cover an area of at least 4,900 square feet. (That’s 5x14=70; 70x70=4,900.) The largest industrial ceiling fan made is 24 feet tip to tip; it would cover approximately 14,400 square feet. (24tx5=120x120=14,400.)
  • The fan tips must be 2 feet away from any ceiling obstructions or features, such as lights, trusses, beams or disco balls.
  • There should be enough distance between the ceiling and the fan that the fan doesn’t “suffocate” and has adequate space above it. This is generally 5-7 feet from the ceiling, depending on the fan’s diameter.
  • The fan should spin from 10 to 24 feet from the ground — often this recommendation is stated as the fan should spin its diameter above the floor.

Although these guidelines can provide a rough idea, larger commercial and industrial spaces have many variables. Please give us a call at 877-244-3267 or drop us a line to get a custom sizing recommendation from a Big Ass expert.

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