Sep 26, 2017 - 04:07 PM
I'm 6' 3" and instinctively duck whenever I see a ceiling fan whirling in any room unless suspended way up high attached to a vaulted or cathedral ceiling.
When I was a kid I just couldn't resist and touched one that wasn't moving too fast. Fortunately it didn't hurt (unlike the time when I was really young I thought stapling my thumb was a good idea) and I didn't damage the fan.
The minimum height to the bottom of any ceiling fan is 7 feet.
Ideally the bottom of the fan is at a minimum 8 feet above the floor, but that's not possible in a lot of homes with 8 foot ceilings.
Ceiling fans with lights will typically drop lower and so you'll either need a flush mount or a shorter rod, depending on the height of your ceiling.
Of course you can hang it lower if you want and probably wouldn't get into trouble unless someone gets injured in your home which is never cool.
Another dimension you may not have considered is that it should be a minimum of 18 inches from any wall.
Typically ceiling fans are suspended from the center of the room. This looks best but also distributes moving air evenly throughout the room.