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Old 07-15-2011, 04:19 PM   #31
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Upstairs Cooling Problems


A wall cavity, or build a small chase and run a single trunk line in the chase. And then run the branch supplies to the rooms. probably work better that way.

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Old 07-15-2011, 04:54 PM   #32
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Upstairs Cooling Problems


So basically run a large (16") duct up my wall cavity and then into a distribution box, cut holes in the ceilings and run ducts to them?
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Old 07-15-2011, 05:06 PM   #33
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So basically run a large (16") duct up my wall cavity and then into a distribution box, cut holes in the ceilings and run ducts to them?
Yep, round or rectangular duct up to teh attic. And then the branches as you said.
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Old 07-15-2011, 06:54 PM   #34
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Upstairs Cooling Problems


So how do I know what size of flex duct to use when I branch off?
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Old 07-15-2011, 08:21 PM   #35
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Upstairs Cooling Problems


Without doing a room by room load calc. Look what size the floor register is fed with. then use the next size bigger.
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Old 07-15-2011, 08:37 PM   #36
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Upstairs Cooling Problems


So probably 8 inch. How much do you think it would cost to do this and how hard do you think it would be for somewhat of a beginner.
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Old 07-15-2011, 08:39 PM   #37
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Upstairs Cooling Problems


Don't know what it will cost you. I get my material at whole sale cost. You'll pay retail.

If you take your time, you shouldn't really have an y problems.

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