[David]

Installation required a 220v circuit inside and out and a flare tool for the copper lines. Buy or pour a concrete pad for the compressor, drill a hole in the wall for the copper lines, attach the lines, hang the wall unit, open the refrigerant valve and turn it on. You don’t have to pull vacuum on the lines but I did and found a bad connection so good thing I did. I also put power switches inside and out to meet code for maintenance.

If little insulation I’d go up a little in size especially if a living space.