The Atmosphere Mini Air Treatment System is designed for individual rooms up to 200 square feet in area. Place the unit near an electrical outlet and away from heating and cooling vents and high traffic areas. To avoid blocking airflow, keep the space above the unit clear and do not place anything in front of or on the unit. Place the cord away from foot traffic, to avoid a trip hazard. Do not cover or hide the cord underneath carpeting, rugs or mats. The Atmosphere Mini Air Treatment System provides more effective performance in rooms where the doors and windows are kept closed.