Today's question... Duct sealing


I was getting poor airflow to my 2 bedrooms on my top floor. The heating/cooling blower is 2 stories down in the basement. I sealed up every horizontal duct seam I could get to in my basement and it really did help the airflow upstairs. I found I was losing alot of air in the basement ducts before it even got moving along the way to all the registers in the house.
Anyway, should I seal all the returns as well? Would this make my airflow even better?
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Logically it would make your air cleaner because it would force the air to go thru your return filter but I don't believe it would affect air flow.

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I was up in my attic running some CAT5 cable. It was frightening up there. I really need to buy a couple of rolls of the good tape and do what it takes to crawl around up there and make it right.
Steve
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