How much extra length should be added for most 45° bend fittings in a clothes dryer duct?

When installing ductwork for a clothes dryer, accounting for bends is crucial for maintaining efficient airflow. A 45° bend fitting introduces additional resistance in the duct system, which can potentially hinder dryer performance if not properly compensated for.

Adding 2½ feet of length for each 45° bend is a guideline based on industry standards and practices. This length compensates for the increased air resistance created by the bend and helps ensure that the duct's effective length isn't too short, which could otherwise lead to inadequate ventilation and a buildup of lint or moisture.

In scenarios where bends are not accounted for, dryers may work harder, leading to inefficiencies or even operational issues, which can result in increased energy costs or damage to the appliance over time. Thus, integrating 2½ feet into your duct length for each 45° bend fosters optimal functionality and airflow for clothes dryer systems.