With our evaporative cooler ratings, you can cut through all the sales hype and find value. We have researched brands from all over the world and by using our years of HVAC service experience produced our unique system of ratings. It truly is like taking a repairman shopping with you! We have given you our top picks followed by a complete list of manufacturers and their ratings. These reviews are for coolers that are designed to be connected to a home's air duct system.