What issue can a restricted cabin air filter cause?

A restricted cabin air filter can significantly impact the airflow within the vehicle's cabin. When the filter becomes clogged with dirt, debris, and contaminants, it impedes the flow of air that is supposed to circulate through the passenger compartment. As a result, the air pressure builds up behind the filter, leading to decreased airflow from the ducts. This reduction in airflow can cause discomfort for passengers due to inadequate ventilation and climate control.

Understanding the function of the cabin air filter is essential in diagnosing issues related to cabin airflow. A properly functioning filter allows for optimal air circulation and helps maintain a comfortable environment inside the vehicle. As it becomes restricted, drivers and passengers may notice that the air coming through the vents is noticeably weaker, which directly correlates to the condition of the air filter.