Does ACH relate directly to heating/cooling load?
If 62.2 requires .35 ACH, does that mean that the entire house would have to be re-heated or re-cooled every three hours or so?
In a video seminar, Katrin Klingenberg said that during a power outage, adequate fresh air could be obtained by opening the windows in a passive house, and there would not be very much heat loss in consequence. She did not specify how many windows, nor how far open.
So assuming mechanical supply (or exhaust) ventilation, but no HRV or ERV, how much penalty is there per air change?
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