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forced air furnace

Posted by steve harrison on March 15th, 1998 11:24 AM
In reply to install forced air gas furnace and ducts by mac on March 15th, 1998 09:48 AM [Go to top of thread]

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To get the right size duct work to the rooms they serve you need to calculate the room size (length times width) then divide by 1.5 to get the required CFM to that room. then u use a duculator to size the duct work according to the CFM and friction of the duct work. This is a start for you. You can e-mail me and i can help you out farther.

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