Where should I place my AirFree Air Sterilizer?

Place your Airfree unit on a flat surface not exceeding 75 cm (3’) from the floor. Do not place it under furniture, shelves, or behind curtains as this will reduce the airflow and its efficiency at reducing microorganisms. Also try and avoid placing the Airfree unit near windows or doors as this could allow sterilized air to escape the room. It's best to use one Airfree air sterilizer per room, and leave it running 24 hours a day.