Before You Begin
Here are some general guidelines on what size fan is best for different
size rooms so the fan will operate most efficiently. This information is also available on the fan's packaging.
For a room of up to 64 square feet, choose a fan that's 32 inches in diameter.
For spaces of up to 100 square feet, choose one that is 36 inches. For up to 144
square feet, select a 42-inch unit. In a larger room of approximately 225 square feet, go with a 44-inch model and for rooms larger than 225 square feet, choose a fan that is 52 inches in diameter.
Forget your math? Here's how to calculate square footage.
Measure length and width and multiply them together. For example, a
bedroom that is 10 feet by 12 feet is 120 square feet, so a 42-inch
diameter fan is the right size.
A ceiling fan should be no lower than 7 feet from the floor to be in compliance with many building codes and for efficiency of the unit. The higher the better for peak performance. Any lower than 7 feet, and a whirling blade could be harmful.
When selecting a fan for a room with a low ceiling, the best choice is one with a low-ceiling mount that hugs the ceiling.