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Forum topic by Shawn posted 08-06-2014 03:10 PM 956 views 0 times favorited 4 replies Add to Favorites Watch
View Shawn's profile


51 posts in 1019 days

08-06-2014 03:10 PM

Topic tags/keywords: question shop air conditioner heater

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!

-- -Shawn

4 replies so far

View TheWoodenOyster's profile


1275 posts in 1359 days

#1 posted 08-06-2014 03:23 PM

I wouldn’t put that unit in an interior wall. Seems to me like the it would need to exhaust all of the heat outside to really work. I’m afraid your bathroom might turn into a sauna real quick. I’m no expert, and maybe I’m wrong.

One other thing to consider is a PTAC unit. It is what they use for hotel rooms.

-- The Wood Is Your Oyster

View bigblockyeti's profile


3589 posts in 1145 days

#2 posted 08-06-2014 03:44 PM

You’d have to have considerable ventilation into and out of the bathroom to carry the heat away from the condenser side of the wall A/C. If you can figure that out, your next potential obstacle is where and how well the A/C you’re looking at carries condensate away from the window (wall) to prevent water damage and be able to get all of it in a single point to drain it away.

View Fred Hargis's profile (online now)

Fred Hargis

3851 posts in 1917 days

#3 posted 08-06-2014 04:39 PM

I would put in one like this before I’d put a window unit in an interior wall. This will keep the noise inside your envelope, and not heat up the facilities.

-- Our village hasn't lost it's idiot, he was elected to congress.

View English's profile


512 posts in 901 days

#4 posted 08-06-2014 04:44 PM

Fred has the right idea. Just duct the discharge heat threw a dryer vent to the outside.

-- John, Suffolk Virgina

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