How must electric dryer vents be configured?

The configuration of electric dryer vents is crucial for safety and efficiency. The correct answer emphasizes that dryer vents must start at the dryer and terminate outside. This is important because it allows the moist air, lint, and heat produced during the drying process to effectively escape outside the home rather than being recirculated indoors.

When vents are designed this way, they help to prevent moisture buildup, which can lead to mold and mildew growth in the house. Additionally, by venting outside, the risks of fire associated with lint accumulation within the vent system are minimized. Dryer manufacturers and building codes typically mandate this arrangement to ensure optimal performance and safety.

In contrast, combining dryer vents with other systems, ventilating indoors, or curving vents excessively can lead to inefficiencies and potential hazards, such as improperly venting warm, moist air back into the living space or creating areas where lint can accumulate, increasing the risk of fire. Therefore, the requirement for a direct path from the dryer to the outside is essential for maintaining safety and efficiency.