Home cooling

Evaporative coolers are energy efficient since the blower motor only has to move the air and not compress a refrigerant gas as required in an air conditioner. The blower motor in a residential unit is typically 1/3 to 3/4 horsepower, while water pumps may be smaller than 1/20th horsepower. When compared to 3 and 5 horsepower compressors needed for refrigerated air, plus the fans for cooling and condensing, evaporative coolers require only about one-tenth as much energy for home cooling, a large annual saving on your electric bill.