Any and all brands of "portable" A/C units - There are single and double hose models. Single hose models do not work AT ALL with the CoolBot. Double hose models work, but they are extremely inefficient and you won't be able to get the room very cold only to about 50F/10C. People making cheese caves are the only people that seem happy enough with them, but even if you are doing a cheese cave, for efficiency sake we still don't love these!
Portable units are more expensive per BTU to operate and more expensive to purchase.