how far should fan blades be from the ceiling
How long of a down rod should I choose? The down rod, commonly referred to as the pole or pipe of a ceiling fan, is very important for both proper circulation, and overall room aesthetics. In addition, the down rod has a direct effect on the amount of air you feel from your ceiling fan. Proper circulation helps ensure the maximum efficiency from your ceiling fan. Your fan blades need to have at least a 3 inch clearance on either side and an 8 inch clearance between the blades and the ceiling. For every 2 inches less than the recommended 8 inches there is a 25% loss in airflow.