Shop for Heating, Venting & Cooling at The Home Depot. The Evap 2 Vornado Whole Room Evaporative Humidifier is a uniquely effective means to create a comfortable, perfectly humidified living space. Vornado's deep pitched blades pull large volumes of harsh, dry air through the unit and then, using Vornado s signature Vortex Action, circulates the humidified air throughout the room, providing complete and balanced humidification. The Evap 2 also recovers and circulates heat off of the ceiling, helping to maintain an even room temperature especially useful during the dry, cold winter season. The built-in humidistat automatically and precisely regulates humidity output or can be set to run continuously. The easy-to-use push button controls allow you to choose your desired humidity level, or fan only, for fan operation without humidity output. Three fan speed settings are available - High, Low or Auto. In the Auto setting, the fan will fluctuate up or down to maintain the set humidity level. 1 gal. capacity. 2 gal. output every 24 hours. Provides coverage up to 600 sq. ft. 5 year limited warranty.