A humidifier without the hassle. What a novel concept! The Healthy Mist Ultrasonic humidifier is made with an antimicrobial plastic to help prevent the growth of microorganisms on the inside surface of the water tank. It's also equipped with a ceramic filter, so you don't have to keep buying new replacement filters. As for performance, this unit features fully adjustable humidity control and directional mist for comfortable, customized use. And the soft LED light stays illuminated whether the humidifier is running or not. From Air Innovations.