In terms of sizing your ceiling fan for your bedroom there are two common size options for bedrooms.
Ceiling fan room size recommendation.
Recommended fan width based on the length of the longest wall in your room.
To get the most out of a ceiling fan you must first select the right size.
The optimum mounting height for a ceiling fan is 8 to 9 feet above the floor with a minimum of 7 feet for safety.
For rooms with tall ceilings you need to choose a fan that uses a downrod to suspend it far from the ceiling.
Medium diameter fan sizes are ideal of living rooms bedrooms and kitchens.
Length of longest wall is less than 12 feet your fan width or blade span should be 36 inches or less.
If you have a regular sized bedroom of 144 to 225 square feet then a medium ceiling fan with a blade span of 44 to 50 inches will be a great fit.
A small 10 x 10 room could accommodate a 48 to 72 fan.
Leave at least 2 or 3 feet of space between the end of the fan blade to the closest wall to determine the largest size fan you can put in a room 3 feet for ceilings 9 feet or less 2 feet for higher ceilings.
Because most ceiling fans on the market are in this size category you have your greatest range of style options with this fan size.
Most ceiling fans are between 42 and 48 inches in size and that they work well for spaces from 75 to 175 square feet.
Rooms up to 75 sq ft 29 in 36 in rooms 76 sq ft 144 sq ft 36 in 42 in.
Energy star makes the following recommendations for ceiling fan diameter.
400 square feet or less work best with medium ceiling fans that range from 48 inches to 54 inches.
For guest bedrooms and bathrooms small ceiling fans work well whereas larger spaces like a great room will benefit the most from large ceiling fans.
This includes large bathrooms large bedrooms medium sized living rooms and kitchens.