A swamp cooler blows air over water or ice to reduce temperatures by as much as 15°F. Also known as an evaporative cooler, this DIY air conditioner is an easy build that can be completed in an hour or two and costs about $30 to $60. This swamp cooler will provide quick spot-cooling while you're working or relaxing.. One of the best ways to stay cool in a hot, dry climate is with a swamp cooler. Swamp coolers work by using evaporative cooling to lower the temperature of the air. As the name implies, swamp coolers use water to evaporate and cool the air. Pros of using a swamp cooler are below: They are much less expensive to operate than air conditioners.

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A pad inside the unit cools and moisturizes the air, making the room more comfortable. The average cost of a swamp cooler installation ranges between $1,562 and $3,741, with an average swamp cooler cost of $2,536, fully installed. Project totals can increase if you factor in the duct installation cost. Evaporative coolers are an affordable.. For very hot, dry air, a swamp cooler provides a lot of cooling. At 125° F and 2% humidity, an evaporative cooler can drop the air temperature to 83° F. In air that's not as hot but more humid, the cooling is much less significant. At 80% humidity, a swamp cooler will only drop 75° F air to 72° F. However, this is a theoretical maximum.