Shop for Heating, Venting & Cooling at The Home Depot. With this personal size humidifier you can keep the air as moist as you like all the time. Its small size makes it great for the office, traveling or by the bed. Ultrasonic technology is among the quietest of all humidifiers. It uses a standard water bottle for a tank (under 20 oz.), so take it anywhere you go and enjoy the comfort. Additional features include a blue LED light with and an adjustable mist control so you can maintain a certain output. Color: Blacks.