What is the purpose of a cabin air filter in an A/C system?

The cabin air filter plays a crucial role in maintaining air quality within the vehicle's passenger compartment. Its primary function is to filter out dust, pollen, and other pollutants from the outside air before it enters the cabin. This helps to ensure that the air the occupants breathe is cleaner and healthier, particularly for those with allergies or respiratory issues. The filter captures various airborne particles, contributing to a more comfortable environment by reducing allergens and other contaminants that can be irritating or harmful.

While enhancing airflow, cooling refrigerant, and monitoring system pressure are important aspects of the overall A/C system, they are not the primary purpose of the cabin air filter. The filter is specifically designed to improve the air quality inside the cabin by trapping unwanted particles from the incoming air.