Health professionals recommend humidifiers for allergy and asthma relief to add moisture for a healthier, more comfortable home. This compact 1.4-gallon ultrasonic humidifier is 99.9% germ-free thanks to nano-silver antimicrobial technology, which prevents the growth of mold or bacteria. Only clean water is vaporized into the room, and there are no pads, wicks or filters to clean or replace! Ultrasonic operation means it?s virtually silent and maintenance free. Warm or cool humidification; adjustable output function. Runs continuously up to 72 hours on one tank. 14?"L x 9"W x 12"H. 10.5 lbs. Korea.