Estimated Yearly Energy Cost $12 Cost Range of Similar Models (19° 840 + Based on 12 cents per cowhand 64 hours use per day i ‘Your cost depends on rates and use + Energy Use 43 Walls All estimates based on {typical use: excluding lights Airflow 3,369 Cubic Fest Per Minute ! The higher the airflow, the move air the fan will move i Airflow Efficiency: 78 Cubic Feet Per Finale Per'Watt fic.