ENERGY GUIDE Estimated Airflow Yearly Energy Cost Cubic Feet Per Minute v + The higher the airflow, the more alr circulation will be produced. Cost Range of Similar Models (197-847) « Ba sad on 12 cants per kwh and 6.4 hours use per day + Airflow Efficiency: 146 Cubic Feet Per Minute Per Watt * Your cost depends on rates and use + Energy Use: 15 Watts All estimates based on typical use, excluding lights.