I have an AC which has 3 ducts coming out of it. Only one duct gets flow - I'm guessing the AC fan blows right into it. What can I do to improve the flow?

  • This is the most annoying problem I face as a home owner. I despise it. – Evil Elf Jun 7 '11 at 12:39

You need to restrict the flow through that duct, either by installing a damper like this in the duct, or by installing an adjustable register at the duct outlet, and closing it off until you get similar flow out of all three ducts.

  • OK, finally dealing with this problem. The issue is that the flexible ducting came TOTALLY loose from the register box - amazing! That'll cause a flow issue. – Sam Jun 19 '12 at 17:25

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