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NC code for O.R.s

NC code for O.R.s

NC code for O.R.s

(OP)
Does anyone know the required number of ACH required for OR's in NC.  I've read 25 and then 15 per AIA.

RE: NC code for O.R.s

6 outdoor air changes and 20 ACH minimum... in Canada. Is NC North Carolina?

RE: NC code for O.R.s

(OP)
Yes, North Carolina. I need to get a code book obviously.  If anyone knows off the top of their head, the info would be appreciated.

RE: NC code for O.R.s

20 ACH and 4 OA ACH according to the latest AIA guidelines.  AIA adopted ASHRAE 170 in 2010 though.  It depends what year your state has adopted though.  Previous years are 15 I believe.   

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