What Role Do Exhaust Caps Play in Home Ventilation?
Exhaust caps are small yet essential components of home ventilation systems. They cover the ends of exhaust ducts—like those from bathroom fans, dryers, or kitchen vents—and prevent rain, debris, animals, and backdrafts from entering the ductwork. Available in various materials such as galvanized steel or plastic, exhaust caps are often fitted with screens and flaps to promote one-way airflow. Properly installed caps help maintain airflow efficiency, reduce energy loss, and protect indoor air quality. Without a functioning exhaust cap, ventilation systems can become clogged or inefficient, leading to moisture problems and poor ventilation performance.
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