Quote:
Originally Posted by Kai in Seattle
There are little "swamp cooler" units available now on Amazon (CoolAir mini portable air conditioner) for about $27 (with 7-color nightlights, too) that supposedly do pretty well if you don't need icy-cold air...and they draw very little power compared to an AC--and they circulate air but don't shove any hot air out. You plug into 110 or one of those computer ports, apparently, and just add water. Reviews are actually pretty good. Free shipping. We may get one.
https://www.amazon.com/Fitfirst-Pers...ir+conditioner.
That takes you right to the "add to my cart" part, but there are many other options in this vein.
"evaporative coolers"
One of the main reported drawbacks is that these coolers only cool an area of about half an average bedroom. Well, that oughta be okay! They seem to be reported as quiet, lower the temperature, and easy to clean. Sounds good to me.
BEST
Kai
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Some notes on "swamp coolers"
Those little mini portable (or any other that doesn't use outside air) swamp coolers only work for a limited time. They work on the principle that it takes heat to evaporate water. Hence the evaporating water takes heat out (cools) the air. BUT it adds that water to the air raising the humidity. The humidity rises until the air is saturated and no more water can evaporate into it. At that point there is no more cooling effect, air temperature starts to rise and you end up with in a worse condition than you stared with - warm SOGGY air. I speak from personal experience. Years ago, in Nebraska, a relative got sucked in by ads for large scale indoor portable swamp coolers. We tried to talk him out of it, but he knew better, got one, and set it going. Felt real good for awhile. Then started to be less effective. Finally had a large portion of his house warm and dripping wet, literally. Had to shut the #@&% thing off and open
windows to bring in hot dry outside air to get the house dried back out. You just can't cheat on the laws of thermodynamics despite what TV ads claim. Temporary cooling effect, yes. Long term things just get worse.
In low humidity areas a window or roof mount swamp cooler can work fairly well. They pull warm (hot) low humidity outside air through wet pads and blow it into the house. The evaporating water does cool the air. BUT all that incoming cooled air pushes warm inside air out and eventually the cooler air also gets vented out and does not build up inside humidity. You're always bringing in new air and venting the old. The lower the outside humidity the better it works.
So don't believe any ads (or glowing user reviews) for swamp coolers that recirculate inside air. Whether they're little table-top models or big whole-room (house) models. They may start out feeling good but in the long run (and it may not take that long) they just make things worse.