The comfort of warm or cool mist combined with the convenience of a true top-fill design that allows you to fill the tank without opening the lid is at the core of the Vornado Mistic™ 8 Ultrasonic Humidifier. Whole room humidification distributes over 3 gallons of humidity per day (up to 700 sq. ft.), while included scent pads allow you to enjoy aromatherapy with your favorite essential oils. The built-in humidistat maintains your set comfort level, and the humidity indicator light lets you read the room. The SimpleTank ® System makes carrying, filling and cleaning the 8-liter tank, well, simple. Add our 5-year satisfaction guarantee and you’re set.