Perhaps we are referring to a different type of air conditioning often used in dry climates. These are evaporative coolers that actually work by blowing over a filter that is kept saturated with water. Some folks refer to these as swamp coolers. These types of coolers actually do add moisture to the air which would be a good thing in an extremely dry climate. So perhaps we are all right, but just talking about coolers that work in different ways. Ray T. Bentley, RPT Alton, IL
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