Does cleaning an AC filter improve cooling?

Cleaning the air conditioning filter can indeed significantly improve the cooling effect. Long-term accumulation of dust on the air conditioning filter will obstruct the circulation of cold air, leading to reduced airflow, slower cooling rate, and even increased compressor load. Regular cleaning can restore unobstructed airflow, enabling cold air to be delivered to the car interior more efficiently while reducing energy consumption and component wear. Ordinary filters are not recommended for water washing to avoid damaging the fibre structure; surface dust can be removed using a high-pressure air gun (0.2-0.29MPa pressure). However, activated carbon filters require direct replacement to prevent filtration failure. It is best to clean the air conditioning system at least once annually. If diminished cooling performance or unusual odors are detected, prompt action should be taken. This maintenance not only optimizes cooling performance but also improves in-vehicle air quality, inhibits bacterial growth, extends the air conditioner's lifespan, and comprehensively enhances driving comfort and health.