I was wondering if there are any window mounted split air conditioners in US market or anywhere else - One in which compressor and radiator hang out of the window and only evaporator is inside the room. I was able to pull up many patents from as early as 1938 with same idea but don't think a commercial product exist. Any thoughts why it could be so?
There are however, "box-in-the-wall" type refrigerative air conditioners that are manufactured to be mounted in windows. The following two picture are from the nymag.com website.