Wide Application: Suitable for various hardness levels of municipal tap water, you can install it on home water heaters, dishwashers, drinking fountains, showerheads, and other water appliances to improve scale issues throughout your home. Durable and Maintenance-Free: The internal SAAS alloy material can continuously release electrons for over 10 years, with no cleaning or maintenance required during this period. Easy to Install: No power source is needed; simply install it at the inlet of the main water line to effectively protect all your water equipment. The 18 GPM high flow rate is compatible with most standard plumbing. Physical Scale Descaler: Requires no external power or chemicals, so our descaler does not alter the water's pH, generate any wastewater, and retains the natural minerals in the water, making it healthy. Reduces Scale Build-Up: The whole house salt-free descaler utilizes water flow to impact an internal special physical structure, generating microcurrents that activate calcium ions in the water, preventing crystallization into scale, with a scale descaling rate of 86%.