Check the listing for details. Envig ScaNil Scale Prevention and Removal System, Descaler for Water Heater. Condition: New. Listed at 249.00 USD. ScaNil protects plumbing components and appliances from limescale build up and keeps them running efficiently. ScaNil achieves superior scale prevention and removal through the patented technology that changes calcite crystallization with micro-electrons generated by the impact of turbulent flow onto alloy material. ScaNil requires no power consumption, salt, or chemicals. It is simple to install and maintenance free. Proprietary and patented technology achieves up to 90% scale prevention and removal through the change of calcite crystallization with micro-electrons generated by the impact of turbulent flow onto alloy material.No salt, chemical, or power consumption is required.With zero operating cost and 10 year product warranty, it has low cost of ownership for your hard water solution.Protects plumbing components and appliances from limescale build-up and keeps them running efficiently.Can be easily installed and works with Copper, CPVC, and PEX pipe or garden hose (adaptor required)