The pros for evaporative cooling

• Thanks to a new awareness of energy efficiency, shop evaporative coolers are achieving a new popularity. Remember, swamp coolers use as much as 75 percent less electricity as air conditioning does. For hotter desert climates, the savings can be much more.
   
• Because the technology is simpler, a shop evaporative cooler costs about half as much as an air conditioner that will cool the same sized area. For perspective, a quick check of the internet in July 2001, found units capable of cooling 750 square feet that were priced as low as $275. Installation costs of swamp coolers are comparable to air conditioning units.
   
• Shop Evaporative coolers operate on 120-volt electricity, which means they don't need special high-amperage circuits like many air conditioners do.