In what context should backdraft dampers typically be used?

Backdraft dampers are primarily utilized in exhaust systems to prevent the reverse flow of air when the exhaust system is not actively in use. Their primary function is to maintain the integrity of the airflow direction, ensuring that exhaust air, which may carry contaminants or unwanted odors, does not re-enter living spaces through the ducts. By closing when there is no active exhaust pressure, these dampers effectively block outside air from entering and ensure that the air flow is directed outward as intended.

In the context of proper applications, while backdraft dampers can serve a role in heating and ventilation systems as well, their specific design and purpose are tailored mostly for exhaust scenarios. This function is crucial in maintaining efficient operation and indoor air quality by ensuring that the intended exhaust is managed properly.

Therefore, the use of backdraft dampers is most aligned with their application in exhaust systems, as this is where their effectiveness in controlling airflow direction is most critical and beneficial.