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Manual J & Attic calculations

Can anyone tell me how / if Manual J differentiates between attic floor insulation and insulated roof decks?

Started by Robert DV

3 Apr 11, 2013
Reply by Robert DV

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Has anyone done a combustion analysis on a relatively current furnace? Is a 90 truly a 90? Or are the numbers done in lab-like conditions t…

Started by randy tolowski

3 Apr 10, 2012
Reply by Christopher Morin

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Manual J & Attic calculations

Started by Robert DV. Last reply by Robert DV Apr 11, 2013. 3 Replies

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Started by randy tolowski. Last reply by Christopher Morin Apr 10, 2012. 3 Replies

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