Library

Fact sheet describing air-sealing concerns and remedies, including HRV/ERV installation, caulking, spray foam, and weatherstrip installation.

Central return designs require an open pathway between the room and the heart of the house where the return grill is located.

Standard describing a test method measuring air-leakage rates through a building envelope under controlled pressurization and de-pressurization which was published in the year 2019 and is available for preview and purchase at the reference link.

Article discussing the risks that can occur from undercutting bedroom doors to provide return airflow from bedrooms, as well as corrective measures that can be taken to address these risks.