For safety the bottom of the fan needs to be at least 7 feet above the floor.
What size ceiling fan is right for my room.
For adequate air circulation the fan blades should hang 8 inches or more from the ceiling.
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.
Energy star makes the following recommendations for ceiling fan diameter.
To get the most out of a ceiling fan you must first select the right 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.
If you have a larger room of over 200 square feet then a fan of 44 inches and above can serve your room well.
Ceiling fan mounting type in addition to ceiling fan sizes the mounting type you choose is extremely important.
Conversely spaces in the home with limited ceiling to floor height think bedrooms offices breakfast nooks etc require a low profile or flushmount ceiling fan.
This includes large bathrooms large bedrooms medium sized living rooms and kitchens.
Standard rooms vary from 10 x 10 to 16 x 16 100 to 256 sq ft and include large bedrooms living rooms and large kitchens.
Length of longest wall is 12 to 15 feet your fan width or blade span should be 40 to 48 inches length of longest wall is more than 15 feet your fan width or blade span should be 52 inches or more.
You will want to check your fan to ensure that its cfm rating is anywhere between 1 600 and 4 500.
A small 10 x 10 room could accommodate a 48 to 72 fan.
For these we recommend 50 to 58 ceiling fans.
Because most ceiling fans on the market are in this size category you have your greatest range of style options with this fan size.
For example if your room s square footage is 75 or less than a ceiling fan of 36 inches in diameter and less will be suitable for the room.
Rooms up to 75 sq ft 29 in 36 in rooms 76 sq ft 144 sq ft 36 in 42 in.
Powerful fans are significant in cooling rooms of this size.