Installed portable Air Conditioners not only to keep things cool but to drop the humidity as well.
First I cut a 4 inch hole in the wall for the exhaust, hit a 2×6 on my first attempt…
Put a vent cover on, sealed and painted it up:
The exhaust pipes on these 2 units gets VERY hot. They might heat the room more than the unit cools it. I bought some insulated ducting and ran the exhaust pipe through it:
It worked! It is not cold, but it is probably 75% cooler.