What is the maximum air temperature that can be tolerated in nonmetallic duct work?

The maximum air temperature that can be tolerated in nonmetallic duct work is 250°F. Nonmetallic duct materials, such as flexible ducting made from plastic or other composites, have temperature limits to ensure safety and structural integrity. Exceeding this temperature can compromise the duct material, leading to deformation or failure, which can result in leaks and reduced system efficiency.

The temperature limit is determined based on the physical properties of the nonmetallic materials used. Typically, manufacturers specify this threshold to prevent potential hazards like melting or combustion, which can occur at elevated temperatures. Therefore, understanding the appropriate temperature threshold for nonmetallic duct work is essential for HVAC professionals to ensure optimal performance and safety within heating, ventilation, and air conditioning systems.