How do I properly maintain my Vauxhall Grandland's air conditioning system?

I noticed that my Vauxhall Grandland's air conditioning system is not functioning as well as it used to. How can I ensure that it is properly maintained to avoid any future issues?

Regularly check and change the air filter to ensure proper air flow. It is recommended to replace the filter every 10,000-15,000 miles.

Use the air conditioning system regularly, even during the colder months. This helps maintain the system's efficiency and prevents the buildup of any musty odors.

Check the refrigerant levels and have them refilled if necessary. Low refrigerant levels can cause the air conditioning system to not function properly.