I grew up with an evaporative cooler.....my question is - where are you getting the water for this to work in the desert? water is not cheap in a desert if at all.....people in a desert think about using water in a desert for 1st drinking then 2nd crops/cattle - so I can eat 3rd saving it so I can do 1&2. Nice idea but where it works best is where cooling is low on the list of needs.