Scalesweeper protects your appliances and plumbing by eliminating lime scale residue caused by hard water without the use chemicals or salt. Scalesweeper treated water helps dissolve pre-existing scale throughout your homes plumbing system and appliances. The unit will dramatically reduce corrosive green and white lime scale residue on sinks, chrome faucets, toilet bowls, bathtubs, showerheads, glass, tile and windows. No dishwasher scale residue on glasses, plates and cutlery everything sparkles! When scale accumulates, it clogs and corrodes pipes, textures and critical components of your appliances. The washing machine, dishwasher, water heater, water dispensers, humidifiers all work more efficiently and require fewer repairs. Scalesweeper offers ultimate protection against scale buildup and scale corrosion inside all the pipes and valves in your home. Scalesweeper protects against scale buildup and scale corrosion 24/7 and works on galvanized, copper or PEX plastic piping.