The lifespan of zeolite in an oxygen concentrator typically ranges from 5 to 10 years, depending on usage patterns, operating conditions, and maintenance practices. Over time, the zeolite’s efficiency in adsorbing nitrogen diminishes due to factors like moisture exposure, dust accumulation, and mechanical degradation. Regular maintenance, such as replacing filters and ensuring the unit operates in a clean, dry environment, can extend the zeolite’s effective lifespan. If you notice a decrease in oxygen purity or output, it may be an indication that the zeolite needs replacement. Always refer to the manufacturer’s guidelines for maintenance schedules and replacement procedures to ensure optimal performance.