How should gas dryer vents be constructed regarding airflow?

Gas dryer vents must be constructed to ensure unobstructed airflow, which is crucial for safe and efficient operation. Proper airflow is necessary to effectively remove moisture and heat from the dryer. If there are any obstructions, it can lead to a buildup of lint, creating a fire hazard, and may prevent the dryer from functioning efficiently, resulting in longer drying times and increased energy consumption.

When the vent system is designed to be straight and free of any blockages, it helps facilitate the optimal movement of exhaust gases away from the dryer. This also minimizes the risk of back pressure that could potentially affect the dryer’s performance and safety. Therefore, the focus on avoiding any obstruction directly supports the primary function of dryer vents: maintaining airflow efficiency and safety.

Other options, like allowing bends in the venting or configuring them flexibly, can lead to increased resistance and potential airflow issues, making them less ideal for gas dryer vent construction.