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  1. JBGCAT

    Air Change Rates

    How many cubic feet per minute (CFM) of outdoor air do you need in order to keep the interior air fresh? ASHRAE 62.2 method: CFM = (0.01 x floor area ft2) + [7.5 x (# of bedrooms +1)] This protocol uses the ANSI Z765 floor area calc method (exterior dimensions), not treated floor area (TFA...

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