The Zen Cooler is not a real air conditioner. This is because if you live in a very humid ( air-humidity ) area it almost doesn’t work. Zen Cooler is based on the old principle of a swamp cooler, a good example of what an evaporative cooler is. It works by humidifying the air (provided that the air is dry enough to accept more moisture) like in a desert climate. It has a small water tank that must be refilled ever so often, depending on the use. It will not work in a humid environment because the air cannot hold much more moisture. Therefore, it definitely will not work down South.