Sure, I'd be happy to provide you with some tips and advice on AC maintenance in Sharjah.

1. Regular cleaning: The first and most important step in AC maintenance is to clean the filters, coils, and fins regularly. This will ensure that your AC unit is running efficiently and will also help prevent mold and mildew growth. You can clean the filters by simply removing them and washing them with soap and water. For coils and fins, you can use a soft brush to remove any dust or debris.
2. Check for leaks: It's important to check your AC unit for leaks regularly. Leaks can cause your unit to lose refrigerant, which can affect its efficiency and cause it to run for longer periods of time. If you notice any leaks, it's best to call a professional to fix them.
3. Monitor the thermostat: Your AC's thermostat is an important component that needs to be monitored regularly. Make sure that it is set at the right temperature and that it's functioning properly. You can do this by checking that the temperature displayed on the thermostat matches the actual temperature in the room.
4. Schedule regular maintenance: To ensure that your AC unit is always in good working condition, it's best to schedule regular maintenance with a professional. They can perform a thorough inspection of your unit and identify any potential issues before they become bigger problems.
5. Keep the area around your AC unit clean: It's important to keep the area around your AC unit clean and free of debris. This will help prevent any blockages or obstructions that can affect its efficiency. Make sure that there are no plants, furniture, or other objects blocking the airflow around the unit.

By following these tips and advice, you can ensure that your AC unit is always running efficiently and effectively, and you can avoid costly repairs and replacements in the future