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 September/October 2004 Issue
Modern Evaporative Coolers 
by Larry Kinney
Dave Emmitt owns Direct Drive Service, a company in Colorado that specializes in efficient lowmass boilers—and high-efficiency evaporative coolers. We’re not talking swamp coolers on the roof of a mobile home; Emmitt’s staff install coolers in the attics of large, site-built homes. The coolers pull in air from large gable vents, cool it by 30°F or so, and distribute it via several large ducts, typically to a hallway below. Cool air is directed by the patterns of window openings or by backdraft dampers, also known as up ducts, in the ceilings of rooms on the top story. The...
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