Reference
Description
Central return designs require an open pathway between the room and the heart of the house where the return grill is located.
Reference
Description
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.
Guide
Description
Guide describing how to undercut the doors in bedroom walls to balance air pressures between rooms and to enable stale air to return to a central heating system.
Guide
Description
Guide describing how to install transfer grilles in bedroom walls to balance air pressures between rooms and to enable stale air to return to a central heating system.