Oh no!  It’s ASHRAE 62.2-2010!
That’s right, a shocking change is coming to the WX world.  ASHRAE 62.2-2010 is the ventilation standard that BPI will adopt on January 1 2013.  Generally, it requires more fans and more ventilation than the Building Tightness Limit.  Text for 62.2 is here at the ASHRAE website.  Apparently, Panasonic has had a run on it’s variable flow, continuous run fans, so stock up if you can.

UPDATE: BPI has put off adopting this ventilation standard until ASHRAE 62.2-2013 comes out in mid 2013.  Stay tuned for more…