AC exhaust needs to be going to outside air
You could do it into the attic as long as your roof had a couple of those spinner things on top to exhaust the attic air
Look what @nostril did with his tent.
With a 10x10, you could throw up some Styrofoam around it, put AC in the tent, and intake and exhaust to and from the attic as long as you have attic vents
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Currently I am exhausting the 10x10 grow tent into the attic, through an 8 inch carbon filter/8 inch hurricane inline fan.
Should I switch it around and exhaust the ac into the attic and just let the tent exhaust into the room?
Just tap into the existing exhaust and they will both be vented out.