I’ve rented space to build an art studio in an in-air conditioned space. There is a wall dividing the basement into two sections roughly 15’ x 30’. The space above is air conditioned. I would like to purchase a portable unit and run a pvc or steel vent to a window at the far end (30’ give or take). I’m concerned with water condensing in the vent, but could pitch toward window. 
AC in Closed Space
air-conditioninghvac
Related Topic
- Does the crawl space need venting
- Do I need more space between the AC unit and bed headboard
- How to improve HVAC system to make upstairs rooms more comfortable
- Should vent directly above furnace be open or closed
- Should HVAC registers be closed or open when HVAC is broken, & window AC units are in use
- Window AC Placement in an Open Living Space
- HVAC – Pros and Cons of an Air Handler Located in Cooled Space
- Issue with closed loop hot water heating
Best Answer
I doubt you will get water condensing in the long vent. The exhaust air is hot and a PVC tube would have enough insulating value to prevent condensation. If you would use a flexible duct you might have to insulate it. This would also prevent heat from flowing through the vent and lowering the net cooling.