So, basically the more expensive and IOT connected Samsung window wall unit, with the same sub 2 year condenser coil life as well around here. I have to drill the holes, as otherwise the coil rots from the inside out in under 2 years, and in any case the base falls apart after 5 years. In a split unit this might work, but the coils will still rot away very fast, unless you make them from something a lot more corrosion resistant than the thin foil and tubing they currently are made from.