Fresh and hot outside air is pulled through moist pads where it is cooled by evaporation and circulated through a house or building by a large blower. As this happens, the temperature of the outside air can be decreased 4-15 degrees. Evaporative cooling blower can work wonderfully well, drawing the desert-like fresh and dry air in. 1/6 electricity consume as air conditioning does. An evaporative cooling blower costs about half as much as an air conditioner that will cool the same sized area. On the other hand, this product can save us from pollution running without refrigerants damage, a green product it is. Some areas also offer rebates up to $300 to electricity customers who install whole-house evaporative systems. Currency: Unit Price: Quantity: Delivery: