Can I place a window A/C unit in an interior wall instead of a window? I'm trying to avoid any noise escaping the shop envelope for respect for my neighbors. I would prefer a mini split system, but the funds aren't there right now. My idea is to install a window unit in an opening in my small bathroom wall with a return vent into the shop and plumb it to a drain. So, what reasons are there that this would or wouldn't be a good idea? Thanks!