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The evaporative cooler can drop the temperature by 25F or more degrees. Evaporation can extract the most heat when the air is dry. So in the dry arid climates of Southwest where relative humidity is less than 30%. Even in the hot humid Southeast, where humidity is 70% or more, evaporative cooling can still drop the air temperature by 5 

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Hessaire coolers have the highest cfm/watt rating in the industry. Our smallest coolers requires 180W. Which means that it will consume about 1 kilowatt/hr in 5 hours. Using typical residential utility rate of $0.10/kwh, the hourly operating cost of the smallest cooler is less than 2 cents/hour. Our largest industrial fan, which can cool up to 3000 sq ft, coolers 

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