ENERGY GUIDE Estimated Airflow Yearly Energy Cost 3,300 $ 1 1 Cubic Feet Per Minute y +The higher the airflow the more air the fan will move «Airflow Efficiency:86 Cubic Feet Per Minute Per Watt uy 1 $34 Cost Range of Similar Models (19" 84") + Based on 12 cents per kWh and 6.