ENERGY GUIDE Estimated Airflow Yearly Energy Cost 2697 s 1 1 Cubic Feet Per Minute Vv The higher the airflow, the i more air the fan will move 3 34 i Airflow Efficiency; 89 Cubic Cost Range of Similar Models (19" 84") Feet Per Minute Per Watt © Based on 14 cents per kWh and 6.