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-   -   Sizing Cold Air return for BSMT (https://www.askmehelpdesk.com/showthread.php?t=279192)

  • Nov 10, 2008, 10:21 AM
    jefmaher
    Sizing Cold Air return for BSMT
    I'm remodeling my bsmt into an apt, There are 4 heat ducts but no cold air return for the bsmt (there are 2 on the first floor), Do I need to add one for the bsmt (approx 1200 sqf). If how large. Thanks
  • Nov 10, 2008, 02:47 PM
    hvac1000
    I always use what is called a manual D.

    Understanding Manual D - Air Flow and Duct Design In The Real World - ACCA Store

    I am sure there is a free program for this so look on Google for hvac manual D

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