Sealer AC ducts

[Jusjay]

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.

[jannnda]

Originally Posted by Jusjay

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.

[Jusjay]

Thank you

[abjbrtd]

Originally Posted by jannnda

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

[wrapped]

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.

[Pete'sMH]

Originally Posted by wrapped

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.