Pons_Aelius

Not all the heat is removed as the machinery of the A/c also get hot and radiates heat and all that cannot be remove by the hose. That is why the machinery for in widow units is physically outside the area you are trying to cool.

The whole point of window A/c is to hang outside the window so the waste/extracted heat is outside and not inside (as it would make the A/c unit useless.)

It sounds like a portable hose units your only option. (even thought they are less efficient than in window units)

Why add those extra chores to my life for something that useless.

Because the people who suggest them don’t see them as chores.

You do, so don’t do that.

Build what you want.

Thinking about backyard DIY skatepark, or a gym pit.

I assume you are a regular at the local skate park and gym now.