A comfortable cabin temperature is especially important during long drives and hot weather. If your car's AC does not cool as effectively as it used to, several different components could be responsible.
One common cause is a restricted or dirty cabin air filter. The filter helps prevent dust and particles from entering the cabin, but it can become clogged over time. Reduced airflow through the vents can be one of the signs.
Unusual smells can also indicate that the AC system needs cleaning or inspection. Moisture and dust can accumulate in parts of the ventilation system, creating an environment where unpleasant odours develop.
If cooling performance has gradually decreased, the refrigerant level and AC system should be inspected by a professional. Refrigerant-related work should be performed using the correct equipment and procedures.
Regular AC inspection can help maintain cooling performance and identify issues before they become more complicated. A technician can check the relevant components and recommend the appropriate service.