On an 8 foot ceiling we recommend the standard pole which is a 3 4 inch downrod that comes with the fan.
Ceiling fan height from roof.
This will keep the blades at least 7 feet off the ground.
For every two inches of ceiling clearance below this minimum airflow through the fan decreases by as much as 25 percent.
If your ceiling is at least 8 high you may want to consider a fan with a short downrod rather than a flush mounted fan.
For safety the bottom of the fan needs to be at least 7 feet above the floor.
Most ceilings are 8 feet high.
So whatever your ceiling height is in feet buy a downrod that will put the top base of the fan at 10 feet.
You will want your new ceiling fan to hang between 8 and 9 above the floor regardless of ceiling height.
Most ceiling fans come ready to install on an 8 ceiling.
Most ceiling fans come with a short downrod about 3 4 inches in length.
Standard ceiling fans include a downrod ranging in length from 2 inches to 10 inches which is suitable for standard size rooms with a ceiling height of eight to nine feet.
Most ceiling fans come with three inch downrods that suspend the fan blades.
The optimum mounting height for a ceiling fan is 8 to 9 feet above the floor with a minimum of 7 feet for safety.
This keeps the fan at least 7 above the floor and still provides for good air flow.
Most fan bodies including mounting hardware are 8 to 12 inches.
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.
For adequate air circulation the fan blades should hang 8 inches or more from the ceiling.
However some manufacturers will include a 6 inch downrod.