Energy recovery ventilators (ERVs) play a crucial role in enhancing indoor air quality by replacing stale air with fresh air while saving energy. The installation process requires careful planning, including duct work integration with existing HVAC systems. Key considerations include unit placement, maintenance access, and duct configurations. The narrative discusses energy efficiency, duct material choices, and the importance of cleaning ducts before installation, culminating in a reflection on the installation process and lessons learned.