Zone 4a.I am installing a Broan AI ERV in my shop apartment and all duct will be in conditioned space.  My Heat pump is a mini split; so, the ERV… Zone 4a.I am installing a Broan AI ERV in my shop apartment and all duct will be in conditioned space.  My Heat pump is a mini split; so, the ERV…Read MoreGreenBuildingAdvisor

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