Estimated Kitting Yearly Energy Cost 3 5 aa Cubic Feat Per Minute higher the airflow Be 5 34 Ato Efficiency: 87 Cubic Cost Range of Similar Models (1897-837 Feel Par Minute Per Watt + Based on 17 vent ner Sand B40 hours use per day = Your cost depends on rates and Use + Engross Use 41 all All estimable based on typical use: exuding lights ficgovienargy this fan is installed on a down rod.