Customer Questions and Answers for Air Diffuser (Damper Assembly) by Whirlpool

The air diffuser regulates and directs cold air between the freezer and fresh food sections to maintain even, stable cooling. Replacing a stuck or noisy diffuser restores proper airflow and temperature control throughout the refrigerator.

• Opens and closes a damper to meter cold air from the freezer into the refrigerator compartment
• Helps prevent warm spots, overcooling, and inconsistent temperatures
• Can resolve little/no airflow from the vent, food freezing near the vent, or a warm fresh food section
• Noises such as clicking or grinding from the vent area can indicate a failing diffuser
• Frost or condensation around the air passage may point to a damaged diffuser or seal

• Disconnect power before servicing; wear cut-resistant gloves
• Remove shelves/bins as needed; take off the vent cover to access the diffuser
• Disconnect the wire harness and remove mounting fasteners; transfer any gasket/seal or hardware from the original part
• After installation, restore power and allow temperatures to stabilize