I have a 20' X 22' shop with 10' foot ceiling. Insulated. 2'-8" door on rear side & double 3'-0" doors on front. Have large hole (28" X 18") framed in for Thru the wall / window A/C.
Problem, I have been told by several that the life expectancy on that unit is maybe one summer.
Any suggestions are help appreciated . . . . Perhaps a unit or a modification that you have found to work.
Thanks, Steve in HOT HOT Humid Louisiana