Which type of filter operates with low pressure drop and high airflow?

Impingement filters are designed to efficiently capture airborne particles while maintaining low pressure drop and allowing for high airflow. This is achieved through their unique filtration mechanism, where particles are forced to change direction and collide with the filter media, promoting particle capture without significantly obstructing airflow.

While HEPA filters are known for their high filtration efficiency, they often create a higher pressure drop due to their dense construction, which can restrict airflow. Electrostatic filters are also effective but can vary widely in performance based on their design and the electrostatic charge used. Activated carbon filters primarily focus on odor removal and gas-phase pollutants rather than particle filtration, typically resulting in less effective airflow capacity when designed to handle particulate matter.

The combination of low pressure drop and high airflow is particularly advantageous in applications where maintaining temperature and reducing energy costs are essential, making impingement filters suitable for specific environments where these factors are prioritized.