vented HPWH as sealed crawlspace exhaust?
HPWH is going in a small deepened section of crawl space, would be a good or bad idea to vent the exhaust only? Crawl space walls are insulated with R18. If I were to vent the output of the HPWH to the exterior, it seems like this would have the benefit of removing the colder air produced (increasing efficiency of HPWH?) as well as serving as an exhaust for the closed crawl space. I looked up a 60 gal model that was about 465 CFM, so this is far more than I would need but also intermittent.
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