This is the hygienic humidifier that exposes every drop of water to sanitizing UV-C light, producing healthy, hydrated air. While lesser humidifiers allow bacteria to breed in dripping reservoirs or on soggy filters, this unique Dyson device subjects all the water in its tank to a three-minute exposure to germicidal ultraviolet rays—the same technology trusted to sterilize hospital surfaces—eliminating 99.9% of bacteria. A purified mist is then released to hydrate a 172' sq. space for 18 hours,  while an integrated thermostat and humidistat prevent rooms from becoming too warm and damp. It has a quiet operation, shielded heating elements, and an automatic shut-off in case of tipping. 223/4" H x 91/2" W x 51/4" D. (73/4 lbs.)