Closed vs vented attic?
Good post from the Professor. I would suggest there are varying thoughts on attic ventilation. My sister-in-law recently built nearby. Two years planning, researching, looking at locations. She wanted, and got, an energy efficient house. Heat pumps, underground coils/heat exchangers, panelized foundation and structure.
Anyway, the deal was to make the house tight and that included no attic ventilation. Not all builders (most?) are fully conversant and experienced with this technology or type of construction. She has solar panels and pays almost nothing for utilities. It's remarkable. In the third winter now, with no problems. She is part of a non-profit that will review and advise on solar. They like it but have no product to sell as far as I know. I'm sure she'd be happy to discuss. PM me for contact coordination.
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