The Air Innovations model AI 103 Ultrasonic, Bedroom Humidifier is one of the top rated and most versatile room humidifiers available for its size. This humidifier features an extra large water tank that can run for over 23 hours on a single fill. Runs almost silent to guarantee a full night's sleep without interruption, making it ideal for the bedroom. This bedroom ultrasonic humidifier auto shuts off for your safety. The bedroom humidifier also features a convenient mist nozzle to allow you to easily direct the humidity to the desired are. Uing the perfect dial knob, this humidifier is designed to give you effortless control to adjust to the perfect mist output. Maintain an ideal level of humidity for your office, home, bedroom, baby room and more.