&Oil ENERGY INFORMATION at High Speed AIRFLOW ELECTRICITY EFFICIENCY 7814.5 29.5 264.9 Cubic Feet Per Minute Watts Cubic Feet Per Minute {Excludes Lights] Per Watt Motor Size: 120mm X 25mm Compare: ceiling fans have airflow efficiencies ranging from approximately 51-176 cubic feet per minute per watt at high speed. Money Saving Tip: Turn off fan when leaving room.