ERV ducting question
I’m building a house in SC and plan on it being tight enough to need mechanical fresh air. I was planning on using an ERV and would rather not have the Panasonic grille so I was going to put a unit in the cellar. I’m struggling with ducting. In reading Martin’s article where he discusses this very topic in FHB issue 248, I wanted to ask, why could you not tap into your return ducts for exhaust and then tap into the supply trunk line for fresh air delivery. Would this not operate very similar to the fully ducted system described as the most efficient? I would tap in to specific ducts to maximize return and supply delivery locations….Would I need to interconnect the AHU with the ERV so the ERV is cut off if the AHU is operating and install backdraft dampers in the lines?
I feel like I’m missing something obvious…
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