Results 1 to 6 of 6
  1. #1
    Join Date
    Oct 2005
    Posts
    2



    How does return air draw from the upstairs in a 2-story house when the return ducts in the basement are formed with the floor joists and sheet metal that has numerous small gaps that are not sealed off?

    It seems to me that the air will take the path of least resistance which would be air from the basement.

    Why are these joints typically not sealed?


  2. #2
    Originally posted by mcex
    Why are these joints typically not sealed?
    It is this way because a lot of new construction guys simply don't do it. And yes, you are right, you will be pulling return air from the basement. I would seal it all off.

  3. #3
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,509
    o get some chalk and seal up what you can this will give you less to worry about. will also help a little with return upstairs.

  4. #4
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Be aware there could be other ducts leaks that you can't se so easily.

    Consider having the ducts tested and sealed if needed.

    Check http://www.aeroseal.com

  5. #5
    If you have leaks that you can easily see, I hate to think what might be hidden,

    go get a gallon of duct mastic and a couple of brushes and start sealing everything.

    Just to be clear, you have a basement, main floor, and second floor on one system?

  6. #6
    Join Date
    Oct 2005
    Posts
    2
    Yes, it is all on one system. About 1000sf in basement and 2300sf between main and 2nd floor.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event