ERV fresh air supply: just 1 or 2 supplies, or each room?
I feel like this may be a dumb question, but I’m going to ask anyways because the answer may be more experience based. I’m looking at ERVs manufacturer of the one I’m looking at doesn’t recommend more than one or two fresh air supplies in the house. In fact, they don’t recommend putting them in bedrooms, but instead in high traffic areas. The ERV is capable of providing 50-140 cfm and I’m needing just under 90 cfm for my home per the ASHRAE 62.2 standard. I can do this with a reasonable provision of air in the home and assume they are stating this because maybe there’s been complaints with supplies in bedrooms? That’s where I figure the community’s experience comes in. If I do this, then obviously the benefit is less ductwork with larger grills since there would be less splitting. If I do it the other way, I assume the more splitting also means smaller grills, smaller cfm at outlet and maybe not as much a nuisance? What’s your experience? Does it make sense to put them only in the high traffic areas? Or bedrooms, den, and great room? Ever wish you’d done something different?
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