The self-cleaning feature on an Insinkerator instant hot water dispenser is designed to help maintain the unit's performance and extend its lifespan. It is generally recommended to utilize this feature every three to six months, depending on the hardness of your water and your usage habits. If you live in an area with hard water, more frequent use of the self-cleaning feature may be necessary to effectively manage mineral build-up. Regularly activating this feature can help ensure optimal water flow and prevent any undesirable tastes or odors. Users should always refer to the specific product manual for guidelines tailored to their model, as recommendations can vary. For more information regarding cleaning schedules or details specific to your dispenser, it may be helpful to visit the Insinkerator website, where you can find resources and possibly contact information for further inquiries.