NATE Air Distribution Practice Test 2025 - Free Air Distribution Certification Practice Questions and Study Guide

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What is the function of a duct damper?

To enhance the aesthetic of ductwork

To regulate airflow and pressure within the duct system

The function of a duct damper is primarily to regulate airflow and pressure within the duct system. Dampers can be adjusted to control the volume of air that passes through the ducts, which helps maintain the desired temperature and indoor air quality, ensuring that heating or cooling systems operate effectively. By managing airflow, duct dampers can also help balance the system, preventing areas of the building from becoming too warm or too cold.

This regulation of airflow is crucial in HVAC systems, as it allows for precise control and efficient operation. An improperly balanced airflow can lead to increased energy consumption and decreased comfort levels within a space. While other options mention aesthetic, sealing air, and structural support, these do not address the fundamental purpose of dampers in an air distribution system.

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To completely seal off air from entering the duct

To support structural integrity of ducts

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