From small, portable models to powerful behemoths that can cool your entire house, here are the best evaporative coolers. Evaporative coolers, AKA swamp coolers, use an electric-powered fan to draw ...

Tim Steele, foreman for The Cooler Company Heating & Air, installs a Breezair evaporative cooler on the roof of a home in Wheat Ridge as his colleague, Bowen Christensen, descends into the attic.