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Old 04-13-2013, 07:16 PM   #1
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sizing duct


I have a ranch about 800 sg ft...going to be installing duct in attic for ac only, just a lttle help would be great

living room 200sq ft.. two 7in flex faces nw
masterbedroom ..150 sq...one 7in and one 6in..ne
bedroom2..120...one 7inch...southeast
bath 60sq...one 4inch
kitchen,..150 one 7 one 6...sw


also buying a goodman 1.5 ton unit.....guessing main trunk line should be??

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Old 04-14-2013, 06:13 AM   #2
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sizing duct


16x8.

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Old 04-14-2013, 08:46 AM   #3
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sizing duct


so I guess that i'm good for the sizes of the supply lines?
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Old 04-14-2013, 08:55 AM   #4
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sizing duct


Can't say. As no indication of what CFM your trying to put in each individual room. They should be large enough. Its easier to damper down a supply thats over sized, then to run a new bigger line later.
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