Filters are available for each HRV or ERV in the Zehnder range, as well as for the ComfoWell Filter Casings. G4 Filters are an equivalent to a MERV 7-8 filter, while the F7 Filters are an equivalent to a MERV 13 filter. ComfoWell Casing filters are available in G4, F7, F9 (MERV 15) and charcoal options.
Need to change your filter? Watch this informational video by Zehnder America on changing your own HRV filter.
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Delivered quickly. Pretty much what I expected. Seems like high quality, swiss filters. And easy to install. But these are filters, so what else can I say.