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  1. #1
    Join Date
    Jan 2003
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    Air Changes AIA table 7.2

    Working on a small remodel job that involves a small procedure room. I need to ventilate the room per AIA Table 7.2 which indicates 12 ACH (air changes per hour).

    Wondering if this ACH means the exchange of fresh air/exhaust air? or just 12 ACH of HEPA filtered air?


  2. #2
    Join Date
    Feb 2010
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    2007 ASHRAE hvac apps handbook specifies for proceedure rooms: positive press, 3 OSA ACPH, 15total ACPH, no air recirc., 30-60 rh, 70-75 f. So does AIA or ASHRAE 62 require more than this? doubtful.
    Last edited by btuhack; 02-08-2010 at 11:49 PM. Reason: spelling

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