How do I properly maintain the air conditioning system in my Audi A3?

I've noticed that my Audi A3's AC system is not cooling as well as it used to. What are some maintenance tips for keeping my AC in top shape?

One important step to maintaining your AC system is regularly changing the cabin air filter. This helps ensure that the air coming through your vents is clean and free of debris, which can affect the efficiency of your AC.

Another tip is to periodically check your refrigerant levels and have them topped off if needed. Low refrigerant levels can cause your AC to blow warm air and put strain on the system.

It's also important to have your AC system inspected by a certified mechanic at least once a year. They can check for any potential issues and make sure everything is functioning properly.