What does a damper regulate?

A damper is a mechanical device used to regulate the flow of air or flue gases in various systems, particularly in heating, ventilation, and air conditioning (HVAC) systems as well as in exhaust and chimney applications. By adjusting the position of the damper, it can either restrict or allow more air or gas to pass through, thereby controlling the temperature, pressure, and overall efficiency of the system.

In HVAC systems, dampers play a vital role in ensuring that air is distributed evenly across different areas of a building or system. They can also contribute to energy efficiency by preventing excess airflow when not needed.

Understanding the role of a damper is crucial for gas technicians, as it directly impacts the combustion efficiency and safety of gas appliances. Proper regulation of flue gases is essential for effective venting and to minimize the risk of hazardous emissions. In contrast, other options such as electrical flow, water supply, and gas pressure are managed by different types of devices and systems, making them unsuitable when discussing the primary function of a damper.