The Evap3 Evaporative Vortex Humidifier creates a comfortable, perfectly humidified living space quickly and quietly. Vornado's deep pitch blades pull large volumes of harsh, dry air through two humidifying filters, and then, using Vornado's signature Vortex Action, circulates the humidified air throughout the room, providing complete and uniform humidification in spaces up to 700 sq. ft. Easy-to-use push button panel allows you to choose your desired humidity level and fan speed. Large 1.5 gallon capacity makes for less refills. 2.6 gallon output every 24 hours. Provides coverage up to 700 sq. ft. and is backed by Vornado's 5 year limited warranty. Whole Room Vortex Humidification The Vornado Vortex assisted humidifier distributes moisture farther into the room, enabling faster humidification. By incorporating Vornado's exclusive Vortex Action, the humidifier moves large volumes of harsh, dry air through a specially designed filter and circulates the moistened air throughout the room, providing complete and even humidification. Intelligently consistent comfort. The Vornado senses how much humidity and circulation is needed to maintain your ideal environment and makes adjustments automatically. Humidify the way nature intended. Unlike a typical misting humidifier, evaporative humidification uses a wick to naturally humidify all the air in the room without making a wet mess on the surfaces around it. Although you can’t see it working, you can certainly feel the difference. And Vornado’s signature Vortex Action ensures complete and balanced humidification throughout the entire space — eliminating dry air and leaving only comfortable air behind so you can breathe easy all season long.