Comment by Bender

For what it's worth one can augment air conditioning with a small evaporative cooler (swamp cooler). I just dump ice into it. It uses about 75% to 85% less electricity than HVAC. Even on a hot day if I point that at me I get too cold and have to point it away and turn it down. It's not great for electronics but not as bad as all the FUD around it. Just don't point it directly at computers. I add a few drops of I/KI to keep anything from growing in it. Some people use peroxide. I like that the evaporative coolers pull even more dust out of the air than my HEPA filters.