The main thing to keep an eye out for here is the rated capacity of the window AC unit (in British Thermal Units, square meters/feet). In this case [Lou] used a pretty beefy $600, 24,000 BTU ...
While they typically cost more than window AC units, the best portable air conditioners ... However, it struggled. It's only rated for spaces up to 108 square feet, about 20% of the testing ...