If you're in need of a more powerful and efficient breeze than produced by a regular fan, and you don’t have a window available or want to drill holes for an airco exhaust hose, this Nedis air cooler provides the perfect solution. The air cooler works as follows: it pulls in dry, hot air which is passed through a moistened pad. This pad absorbs the heat and the moisture in the pad evaporates, cooling the air by a few degrees for you to enjoy an invigorating, refreshing breeze. Compare it to spending a hot summer day on the water: even though temperatures are high, it still feels pleasantly cool. The humidified air is blown back into the room so you won’t face that dry air which comes with air conditioners.