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Old 05-29-2012, 03:24 PM   #1
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size of duct


want to install a 2ton ac blower what size should my first pieces of main duct be

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Old 05-29-2012, 05:04 PM   #2
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size of duct


Depends on the total equivalent length of the duct system. That includes adding length for turns,boots,takeoffs, offsets ect. 8x22 would be good in most homes.

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Old 05-29-2012, 05:11 PM   #3
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size of duct


is the equipment at one end of the house? \/->|--->|--->|--->|--->|
or is it in the middle? |<---|<---\/--->|--->|--->|
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Old 05-29-2012, 06:15 PM   #4
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size of duct


its a ranch house, so i'm going to put all the equiment at one end and just have one straight run....after the plunum no more than 24 feet...total house is only 39 long
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Old 05-29-2012, 06:18 PM   #5
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size of duct


im goig to have at the most 5 six inch supplys and 2 five inch supplys for bathrooms and 1 eight inch for some air flow in basement, with return
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Old 05-29-2012, 06:39 PM   #6
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size of duct


I'd make those 6" supplies, 7".

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