.........side AC unit is OK for moderate temps (i.e.; below 85deg F). Beyond that it takes a lot of improvisation to stay moderately comfortable. Lots of luck if there are kids going in and out regularly. At least yer feet will stay cool!
South Atlantic and Gulf states during summer. Forget about it. I tended to go south in the fall & spring and stay north during the summer, so was rarely in extreme conditons. The few times were memorable
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Denny_A