Tower humidifier features an easy-to-fill 1.4 gallon tank and runs up to 60 hours. You can choose cool or warm mist, and there's an adjustable mist control. Humidifier also offers, programmable humidistat and a LCD readout that displays current room humidity, programmed humidity, target and timer setting. The built-in 8-hour timer, built-in tank light and auto-shut-off protection features provide added convenience. Humidifier has ultrasonic technology for virtually silent operation, and the anti-microbial technology helps prevent the growth of molds and mildew on the tank. There's no filter to clean or replace. Includes demineralization cartridge. One-year warranty. Model # EVSI-HD40.