When I was a kid I spent a summer in Ft Worth Texas where I saw a swamp cooler for the first time. Having spent all my previous summers in No Illinois with no A/C I was pretty impressed with them.

There are days when they'd probably work pretty good here in the Ozarks, but it's pretty rare for us to get down in the 30% range of humidity where I'm sure they work pretty darn good. I'd imagine they work great with a dehumidifier and save some money over most A/C units.
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