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-   -   how to calculate ducts (http://www.diychatroom.com/f17/how-calculate-ducts-58969/)

griffis 12-10-2009 12:27 PM

how to calculate ducts
 
Hi, I'm a homeowner that likes to crunch numbers. As part of a larger renovation I'm evaluating the existing ducts to determine what, if anything, should be changed.

I got ahold of Manual J and used it to calculate heat loss and infiltration for all the rooms in my house. But now I'd like to use that information to figure out what supplies and returns I need in each room to properly heat/cool the spaces. I'm not finding those calculations in Manual J. Can anybody suggest another reference I should be using?

Thanks!

beenthere 12-10-2009 01:22 PM

Manual D.

griffis 12-10-2009 04:25 PM

Thanks!


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