ENERGY GUIDE Estimated Airflow Yearly Energy Cost $5 2,149 Cubic Feet Per Minute = The higher the airflow, the more air circulation will be produced. Cost Range of Similar Models « Based on 12 cents per kwh and 6.4 hours use per day « Airflow Efficiency: 120 Cubic Feet Per Minute Per Watt * Your cost depends on rates and use * Energy Use: 18 Watts All estimates based on typical use, excluding lights.