It is recommended to maintain and clean your humidifier regularly to ensure optimal performance and prevent bacterial growth. The frequency of maintenance depends on the type of humidifier and usage. For example, evaporative humidifiers may need to be cleaned every 1-2 weeks, while ultrasonic humidifiers may only need to be cleaned every 4-6 weeks. It is also important to replace filters and clean the tank and other components according to the manufacturer’s instructions.