What should be inspected to ensure proper airflow in the HVAC system?

To ensure proper airflow in the HVAC system, the cabin air filter should be inspected. The cabin air filter plays a critical role in maintaining the quality of air entering the passenger compartment. It filters out dust, pollen, and other airborne particles, ensuring that only clean air circulates within the vehicle. If the filter becomes clogged or dirty, it can significantly restrict airflow, leading to reduced efficiency of the heating and cooling systems, and may even cause discomfort for passengers.

Inspecting the cabin air filter is important, especially in areas with high levels of pollutants or during seasons with a lot of pollen. Regularly changing or cleaning the filter helps maintain optimal airflow, enhances the performance of the HVAC system, and improves the overall comfort of the vehicle's interior.