What is prohibited in clothes dryer exhaust ducts to ensure proper exhaust flow?

Fire dampers in clothes dryer exhaust ducts are prohibited to ensure proper exhaust flow. This is because fire dampers are designed to close automatically in the event of a fire to prevent the spread of flames and smoke. If a fire damper were installed in a dryer exhaust duct, it could obstruct the airflow needed for the dryer to function efficiently and could lead to unsafe conditions, such as overheating or increased risk of fire from lint buildup.

For clothes dryer systems, maintaining clear and unobstructed exhaust pathways is essential for both performance and safety. Proper exhaust flow helps to effectively remove moisture, lint, and heat from the dryer, ensuring that the unit operates correctly and reduces the risk of fire hazards associated with lint accumulation in the duct. Therefore, the prohibition of fire dampers is a crucial aspect of dryer ventilation design in order to prioritize proper exhaust flow and safety.