A prefilter installed on the coldwater inlet of the water heater. It filters and purifies incoming water to protect the water heater and improve water quality. Why this matters The water heater heats cold water in its inner tank. If the water quality is poor and contains sediment or particles, prolonged heating at temperature can cause scale and blockages. This can damage the water heater and negatively affect shower performance. What it filters Filters sediment, red worms, algae and other impurities to reduce buildup and protect downstream appliances. Provides additional protection for washing machines, smart toilets and other connected equipment. Key benefits Protects the water heater from sedimentrelated damage and scale buildup Improves hotwater reliability and shower quality Helps extend the life of connected appliances such as washing machines and smart toilets Reduces the need for maintenance caused by sediment and impurities Compatibility and notes Designed for standard coldwater inlet connections on most residential water heaters Size and material vary by model; refer to modelspecific specifications for exact details Use scenarios Scenario 1: Home with hard water. The prefilter reduces sediment and scale formation in the water heater, helping maintain efficient heating and steady hot water. Scenario 2: Protecting appliances. By filtering impurities, it provides cleaner water for washing machines and smart toilets, reducing impurityrelated wear. Scenario 3: Renovations or installs. Adds an extra layer of protection for the hotwater system and downstream fixtures, contributing to consistent performance and fewer downstream issues.