@whitequark @gsuberland I was almost buying a second hand R600A industrial compressor to do exactly that, but since I never dealt with anything related to AC, I'm now looking more into opening up a portable monobloc and putting the hot side outside with some random fan without touching the refrigerant piping. I couldn't find that many people doing such things so I'm not really sure where I'm going with that, so I'd be more than happy seeing other people doing such things :p