This prefilter is installed on the coldwater inlet of the water heater to filter and purify incoming water and protect the heater. Key benefits Protects the water heater by filtering sediment, red worms, algae, and other impurities from the cold water before it reaches the tank. Provides protection for downstream appliances such as washing machines and smart toilets by reducing particulates that can cause wear and blockages. Helps prevent scale formation and potential blockage in the inner tank by removing contaminants before heating, supporting reliable hot water supply and shower performance. How it works Water enters through the coldwater inlet and passes through the prefilter, which captures sediment, algae, and other impurities. By reducing contaminants before heating, it lowers the risk of scale buildup in the inner tank and helps maintain heater efficiency and hot water quality. Use scenarios Residential water heater protection in areas with sedimentrich or algaeprone supply, extending heater life and maintaining performance. Protection for multiple appliances connected to the hot water line, including washing machines and smart toilets, by reducing contaminant load. Maintenance of shower and faucet quality in homes where incoming water quality can cause deposits or scaling after prolonged heating. Specifications and considerations Installation location: on the coldwater inlet of the water heater. Function: filters sediment, red worms, algae, and other impurities to guard the water heater and connected appliances. Compatibility: designed for installation at the coldwater inlet of a water heater to purify incoming water before heating.