Amazon.com
Versatile, lightweight, and economical, this evaporative air cooler easily rolls from room to room for use anywhere in the home or office. Unlike a fan that blows hot air and more energy efficient than an air conditioner, the appliance uses water to cool a personal space up to 12 degrees lower than the ambient temperature. The air cooler works by endothermic reaction (a reaction that consumes heat). The unit sucks air through a wick saturated with water; as the air flows (more...)