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They might say no, if you ask an older relative if they've heard about an evaporative cooler. But it is likely that they would identify the theory behind the technology. People could sleep outside on the screened in porch to try to stay cool through the night, before air conditioning or other cooler forms existed. They'd often hang wet sheets over the screens in a try to cool the air. In the event you want to learn additional resources on  [http://evoclearwater.com/ url] , we recommend many libraries you might consider pursuing. While the heat passed through the page, it was cooled. And then a cool air would gradually move, relieving some of heat for that sleepers. The same concept exists today in the proper execution of evaporative coolers. These devices are great cooling mechanisms for folks who live in warm, dry climates. They're also known by the name swamp refrigerators, but which can be misleading since they really won't work at all-in swampy, moist conditions. The name probably originated from the way that evaporative coolers actually add humidity to the air. However in fact, evaporative refrigerators require dry, hot air to work because in order for the air to be cooled, it has to be able to grab (evaporate) a few of the water. It wont get any more water, In the event the air has already been saturated and it wont be cooled.  [http://evoclearwater.com/evoclear-whole-house-carbon-filter.html Learn About Whole House Water Filtration]  is a thought-provoking resource for more about the purpose of this viewpoint. Heres how evaporative refrigerators work; the machine consists of a fan that draws the hot dry air in the cooler, where it is passed through wet parts. The patches are kept damp by a pump that circulates water through the machine. As the dry air picks up a number of the water, its temperature falls, often by as much as 30 degrees Fahrenheit, with respect to the climate. The cooler air is then taken into the room. An additional advantage of an evaporative cooler is that the patches that cool the air also filter it. I discovered  [http://evoclearwater.com/evoclear-salt-free-water-softener.html salt free softener website]  by browsing Yahoo. As the air passes through the pads, soil, dirt, contaminants and other pollutants are captured in the materials of the pads. Therefore youll be breathing solution, cooler air. If youre wondering why you should select an evaporative cooler over a normal ac, theres one more reason we havent covered yet. Browse here at the link  [http://evoclearwater.com/evoclear-whole-house-carbon-filter.html whole house water filters]  to check up how to deal with it. The fee to run an evaporative cooler is often as small as 1/10 the total amount it costs to run an ac. In reality, some community energy companies in hot, dry areas will actually offer people a rebate if they mount an evaporative cooler because they recognize the successful, productive cooling functions of the technology. Contact your local utility company to find out if they offer the concessions and ask if they've any info on the effectiveness of an evaporative cooler locally.