I live in Southwest US where it’s common to use a swamp cooler (aka evaporative cooler) for your house. Instead of the normal refrigerated air unit that sits ou

I live in Southwest US where it’s common to use a swamp cooler (aka evaporative cooler) for your house. Instead of the normal refrigerated air unit that sits outside your house, there is basically a box with a big fan that pulls air across a big wooden or synthetic “sponge” and pushes it into your house ducts. A small pump like in a fish tank continuously pulls water across the sponge to keep it wet. You leave a couple windows in your house cracked open to leave an exit as new cold air is pushed in. Has a nice humidifying effect which is good in the desert too!