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RPBrown wrote: ↑Mon May 24, 2021 2:01 pm I would recommend a ductless mini-split such as Mitsubishi, LG, or Daikin. The indoor unit will mount on the wall and the outdoor unit is only 12-18 inches deep. Width and height determined by capacity. These are very efficient units and work really well but do your homework on brands.

This, I can tell you that portable A/C's will not cool down a three car garage in South Texas. I have been using portable A/C's for the last 10 years for an 8x8 office in my garage and it can barely get the temp down to 78 in the summer for only 64 square feet. I have gone through at least 5 in the last 10 years so brand makes no difference. Split system is what you need.