What is the maximum length allowed for transition ducts for domestic clothes dryers?

The correct answer, 8 feet, reflects the maximum length allowed for transition ducts used in domestic clothes dryers according to the National Fire Protection Association (NFPA) and the International Residential Code (IRC) guidelines. Transition ducts are typically flexible hoses connecting the dryer to the wall vent, and their length can significantly affect drying efficiency and fire safety.

Long transition ducts can create higher resistance to airflow, which may lead to inefficient drying and increased lint buildup. This buildup can pose a significant fire risk, making it crucial to maintain the maximum length specified. The 8-foot limit is designed to balance the need for flexibility in installation with the imperative of safety and efficiency in dryer operation.

Understanding these specifications is essential for ensuring compliance with building codes and promoting safe dryer operation in residential settings.