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Custom vent for through-the-wall AC unit to another room

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  • Aug 3rd, 2021 4:22 pm
[OP]
Sr. Member
Dec 23, 2012
503 posts
496 upvotes
RICHMOND HILL

Custom vent for through-the-wall AC unit to another room

Hello, I just replaced a very old (30? years) through-the-wall AC unit with a new one, the only one that snugly fits into the existing sleeve. The old one was meant to service two bedrooms using a custom built duct that was built around the old unit. We tore it apart to install the new unit, and now I have to think of how to get the air from the new unit into the existing duct.

Image

old setup:

Image

I'm considering:

1. Some custom carpentry
2. Some kind of hose/sleeve like dryers have
3. A 3d printed part

Any ideas? Thanks!
1 reply
Deal Fanatic
User avatar
Oct 19, 2008
7202 posts
2808 upvotes
GTA
Remove (Black) louver piece on the right section, build a dywall box to direct air from ac to existing duct.

You haven't installed that ac upside down have you?

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