Direct swamp coolers are the most common variety. They’re designed to pass air directly over the evaporative, water-soaked padding, resulting in cooler, slightly humidified air.

Direct swamp coolers are the most common variety. They’re designed to pass air directly over the evaporative, water-soaked padding, resulting in cooler, slightly humidified air.

Swamp coolers don’t provide the frosty chill of air conditioning, but they can lower a room’s temperature 9 to 25 degrees. If you live in a dry area with intense hot spells, the best swamp ...

Where you live, where you'll use the unit—even whether you have allergies—are all factors to consider when deciding which cooling device is better for your home.