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Old 01-11-2021, 07:23 PM   #1
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Model: ACE 29.2
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THOR #10103
Sealer AC ducts

Can / should you seal the open duct area behind the last over head vents. Mine seem to go on forever]after the last ac duct.
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Old 01-11-2021, 07:27 PM   #2
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Originally Posted by Jusjay View Post
Can / should you seal the open duct area behind the last over head vents. Mine seem to go on forever]after the last ac duct.

Yes you should. You may want to do a search on this site. I have seen a lot of information on this subject.
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Old 01-11-2021, 09:08 PM   #3
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Thank you
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Old 01-11-2021, 10:25 PM   #4
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Originally Posted by jannnda View Post
Yes you should. You may want to do a search on this site. I have seen a lot of information on this subject.
Here's a big ac thread, pg 8, post 150, 160... are what you're looking for.
I have it bookmarked.
https://www.thorforums.com/forums/f2...e-12980-8.html
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Old 01-25-2021, 03:27 PM   #5
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Yes I did mine with spray foam I removed last vent cover used the straw to spray slowly back and forth from bottom building a wall to top of duct. Works great it does make a difference.
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Old 01-25-2021, 05:58 PM   #6
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Yes I did mine with spray foam I removed last vent cover used the straw to spray slowly back and forth from bottom building a wall to top of duct. Works great it does make a difference.


I just stuffed fiberglass batt insulation in downstream of the last outlet.
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