Description
A backdraft damper is a critical component in ventilation systems designed to prevent the reverse flow of air through ducts when the system is off or under certain conditions. It serves primarily to maintain the integrity of the system’s airflow and prevent issues associated with backdrafting.
Key Functions:
- Preventing Airflow Reversal: The primary function of a backdraft damper is to block air from flowing backward through the ducts. This is especially important in systems where air movement in one direction needs to be controlled, such as in exhaust or intake systems. Without a backdraft damper, outside air, odors, or contaminants could enter the system when it’s not actively in use.
- Maintaining System Efficiency: By preventing reverse airflow, backdraft dampers help maintain the efficiency of the ventilation system. They ensure that the intended direction of airflow is maintained, which helps optimize the performance of heating, cooling, and exhaust systems.
- Protecting Equipment: In some cases, backdraft dampers help protect HVAC equipment and ductwork from potential damage caused by the reverse flow of air. This can reduce wear and tear on system components and extend their lifespan.
