HVAC - How to Make a Return Air Grille "Shut Up"

HVAC - How to Make a Return Air Grille "Shut Up"
  PutSome5tankOnIt
133   153.2K  

We've all heard noisy returns. How do you quiet them down? Make the return air duct  ...  length slows air velocity.  ...  increase plenum volume. It works wonders when you allow a return air duct to draw air from a plenum, instead of drawing ai

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