Your air conditioning system should generally be serviced once a year to ensure it operates efficiently and to prevent potential issues. However, depending on the type of system and usage, you may want to consider more frequent servicing under certain conditions:

1. Heavy usage: If your system is running continuously, such as in a commercial environment, or if you live in a particularly hot climate, servicing it every 6 months may be beneficial.
2. Older systems: For older systems, more regular check-ups can prevent breakdowns and extend the system's lifespan.
3. Allergy concerns: If air quality is a high priority due to allergies, more frequent servicing will help ensure your filters and components are clean.

Regular maintenance can improve energy efficiency, reduce running costs, and catch any potential issues before they become costly repairs.