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...HRV is undersized. I have 3300 sq ft of living space, an air tightness of 1.5ACH and an HRV with 59CFM. Hope someone can clarify. Cheers To properly size a home ventilation system you really should have a professional, and you may need one anyway for permitting. We don't like to weigh in on topics that where you will n...

...HRV and HRVs, we don’t have a particular brand to recommend over another though there are a few options among ductless HRV & ERV units here.  Having chosen a unit, our install video might be useful, and this page also discusses the pros and cons of the system as well.  Ductless HRV and ERV ventilation systems DIY i...