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Passivhaus depends on ventilation as much as insulation. The MVHR criteria, airtightness targets, noise limits and terminal design that make certified homes comfortable, efficient and quiet.

Airtight homes need designed-in ventilation. An architect's guide to integrating MVHR into modern home designs: when to plan it, where the unit and ducts go, how to keep it silent, and how frameless plaster-in diffusers keep the ceiling clean.