Return to the Heating & Air Conditioning Forum | Post a Follow-Up

how thin can a duct be?

Posted by darind (My Page) on
Sun, Apr 3, 11 at 17:58


I am doing a basement remodel. We have one branch line duct we have to run on the bottom of the joists for about a 5 foot length. Unforntunately, it is in the middle of the basement. Currently this duct is 3.5x10. 35 sq inches.

As basement height is an issue, I would like to minimize the thickness of this duct.

Is it resonable to get a custom duct that would be 1.5x24 (36sq inches) or 1x36 inches?


Follow-Up Postings:

RE: how thin can a duct be?

Its the perimeter that counts, but round is the most efficient...I'd do it, but assure that 36 inches overall is length matters, as well as the size of the rooms, insulation, and comfort levels..
Too small may result in noise...
A poly material may have less friction.
This becomes complicated, does it not ?
We are only considering a 5 foot run, so worry not.
I did learn something at school years ago...

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Heating & Air Conditioning Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here