The HoMedics® TotalComfort® Humidifier Deluxe uses an ultrasonic technology for whisper-quiet, visible, micro-fine mist with warm or cool mist options. The 1.5-gallon tank is easy to remove and fill, and runs up to 65 hours per filling. Includes auto shut-off protection when tank is empty and a built-in timer up to 8 hours. Clean-tank technology helps protect the tank from mold and mildew. LCD digital readout displays room humidity level, programmed humidity target, timer setting, mist intensity, and mist temperature. Adjustable mist control, programmable humidistat, nightlight, and demineralization cartridge included.