The AIR-O-SWISS 7135 Ultrasonic Humidifier is a great buy! Manufactured by Air-O-Swiss, it is a choice home and garden product. This efficient air humidification technology uses high-frequency vibration to generate a micro-fine mist. A fan blows the mist into the room where it immediately evaporates. The 7135 ultrasonic humidifier requires little power, has a built-in hygrostat and an output regulator button. A replaceable demineralization cartridge ensures a hygenic, pure water mist, without limescale or mineral residues (no white dust). When operated with the pre-heating function, the water is heated to 176°F before it enters the nebulizer chamber. The mist exits the appliance at a comfortable temperature of 104°F. This has the advantage that the room temperature will not fall, and additionally the water can be kept cleaner. It is often referenced by UPC code 834546000220.