What type of joint should be avoided in electric dryer vents to maintain efficiency?

Mitered joints should be avoided in electric dryer vents because they can create areas where lint and debris accumulate. These joints are formed by cutting the ends of two pieces of duct at an angle and fitting them together, which can compromise airflow. The angular connection creates a more complex airflow path, increasing the chances of lint buildup, which can reduce the overall efficiency of the venting system and create fire hazards.

In contrast, using straight sections of duct and smooth connections allows for unrestricted airflow, facilitating efficient drying and reducing lint accumulation. Implementing the proper joint types in dryer vent installations helps maintain optimal efficiency, safety, and adherence to building codes.