There are also air conditioners that don't use refrigerated air. The principles of it are similar to the evaporative cooling mentioned in the article but with a

There are also air conditioners that don't use refrigerated air. The principles of it are similar to the evaporative cooling mentioned in the article but with a fan and water pump. If your climate is dry enough to use it, it can be a great option and much cheaper than refrigerated air. You'll see one on the roof of almost every home driving through certain neighborhoods of El Paso. https://en.wikipedia.org/wiki/Evaporative_cooler https://en.wikipedia.org/wiki/Evaporative_cooler