29"-36" Fan for 75 sqft

36"-42" Fan for 76-144 sqft

44"- 54" Fan for 145-225 sqft

50" - 72" Fan for 225-400 sqft

54" - 72" Fan for 400+ sqft

84" + Fan good for 400+ sqft

Large fans are nice for moving large quantity of air at low speed.

My Personal Favorite Fan is the Windmill and the Java.

Ceiling Height Vs. Downrod

9ft = 6in - Standard

10ft = 12in

11ft = 18in

12ft = 24in

13ft = 36in

14ft = 48in

15ft = 60in

16ft = 72in

17ft = 84in

18ft = 96in

19ft = 108in

20ft = 120in

Up every 12in every ft. Biggest Downrod is 6ft. But you can use a Coupler and attach another downrod.