Piggy-backing Cold Air Returns?


Old 04-29-03, 05:55 AM
Visiting Guest
Posts: n/a
Piggy-backing Cold Air Returns?

Is it ok to tie into an existing cold air return branch to put in new cold air returns for my basement finish?

There are two spots where existing cold air returns branches go right under interior walls and it'd be extremely easy to tie into them. Much easier than starting a new branch from the main cold air return intake.

I don't see a problem with it, as technically the branches are already branches off the main trunk, but I just wanted to verify it with all you experts out there.

Sponsored Links
Old 04-29-03, 05:40 PM
hvac4u's Avatar
Join Date: Aug 2001
Location: NW atlanta
Posts: 3,147
Received 0 Votes on 0 Posts

the airflow will take the path of least resistance for the most part
Old 04-29-03, 08:22 PM
Visiting Guest
Posts: n/a
no problem adding the extra return......just be sure the filter in your sytstem is in a place where all the return air passes. you may want to consider adding a damper to balance the return air. this will somewhat change the path of least resistance and allow more return air from your new return.. the damper should go in the old return duct before the spot that the new duct run is added. either way you want to be sure you do not decrease the amount of air being drawn back to your unit.
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: