I realize this thread is as old as dirt but I very much want to research this subject further. Am fully aware of using a portable air conditioner & a coolbot. Problem is a coolbot is roughly $600 now. My research shows it might be possible to convert a conditioner so it does not freeze up without using a coolbot. I have a feeling there are lots of AO fans out there that would like more info on it as well. I think it it involves a line volt thermostat & some kind of change to a capacitor but so far the info I find is lacking detail. Found this on youtube:
https://www.youtube.com/watch?v=ZL8ol72Igbo
If there is anyone out there that can provide some finer detail I & I am sure many other's would be most grateful.