52i‘¥ ENERGY INFORMATION at High Speed AIRFLOW 5197 Cubic Feet Per Minute ELECTRICITY 67 Watts {Excludes Lights] EFFICIENCY 78 Cubic Feet Per Minute Per Watt Motor Size: 153mm X 15mm 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.