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what would be advice for soundproofing material for my mechanical room where a new hrv hepa is being installed? the hrv is a lifebreath 300dcs, 220 cfm at 0.5 wg. the hepa is a lifebreath...

I also can't find any independent data from the testing of the TFP. It is attractive to me because it can be installed inline with the fresh air intake to the lifebreath HRV -- supposedly it doesn't...

do these work? i've noticed some hrv/erv units with TFPs in them. are the replacement collectors pricey? when installing inline with a hrv, they aren't supposed to introduce any drag on the balancing...