Estimated Yearly Energy Cost $ 14 $3 1653 10.4 159 4,206 6726 84.71 79 Cubic Feet Per Minute $34 Cost Range of Similar Models (19"—84") ·Based on 12 cents per kWh and 6.4 hours use per day ·Your cost depends on rates and use ·Energy Use: 51 Watts All estimates based on typical use, excluding lights Airflow ·The higher the airflow, the more air the fan will move ·Airflow Efficiency: 82 Cubic Feet Per Minute Per Watt ftc.