ENERGY GUIDE Estimated Airflow Yearly Energy Cost Cubic Feet Per Minute Vv + The higher the airflow, the more alr circulation will be produced. Cost Range of Similar Models « Based an 12 cents per kwh and 6.4 hours use per day « Airflow Efficiency: 133 Cubic Feet Per Minute Per Watt * Your cost depends on rates and use + Energy Use: 21 Watts All estimates based on typical use,excluding lights.