Evap coolers aren't really effective ... I have recently found to be unbelievably effective, especially for the price, is a Frogg Toggs instant cooling neck towel for $12.69.

Another investigation focused on air-source heat pumps with direct evaporative coolers applied to the condenser. This study demonstrated that the energy consumption of the heat pump could be ...

Sometimes called an evaporative cooler ... according to Fixr. Here’s a price breakdown for swamp coolers, as per Fixr. The EIA also found that monthly costs remain high in dry regions of ...