What is a swamp cooler? Also known as an evaporative cooler, this device lowers the temperature in a home simply by adding moisture to the air.

Size Some evaporative cooler systems mount on the roof and cool the entire home, but our recommendations focus on more affordable, portable units meant for garages or screened-in sunrooms.

During the recent heat wave, a friend was raving about swamp coolers. I'd never heard of them. All she could tell me was, it's a box that appears to make your room less hot. How do they work? Do I ...

We’re currently testing two new swamp coolers——the Honeywell TC30PEU and Hessaire MC37V —at a home in the Mojave Desert. We’ll update this guide with more details soon.

One alternative is a swamp cooler, also known as an evaporative cooler. Not to be confused with A/C units, swamp coolers take warm, outside air and pass it over water-saturated pads.