All he does is use Panasonic bath fans with Aldes Airlet vents in the rooms. Nothing too complicated there. And it's still not "natural" ventilation. It's mechanical because it's driven by motorized negative pressure. It's cheaper than a HRV to install but there is no tempering of the incoming air. At the level of superinsulation that these natural builders are taking houses it matters little.
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Chipping away on a daily basis.
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You know you're an ecorenovator if anything worth insulating is worth superinsulating.
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S-F: "What happens when you slam the door on a really tight house? Do the basement windows blow out?"
Green Building Guru: "You can't slam the door on a really tight house. You have to work to pull it shut."
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