Key benefits Protect the water heater and plumbing by filtering cold water before it is heated, reducing scale and blockage that can damage the heater and affect shower performance. Improve overall water quality for downstream appliances by filtering sediment, bacteria such as red worms, algae and other impurities. Simple installation on the cold water inlet of the water heater, providing proactive protection with a compact inline design. How it works The prefilter is installed on the cold water line feeding the water heater. Incoming water passes through the filtration stage before heating, removing sediments and impurities to help prevent scale and deposits inside the heater and connected fixtures. Key features Function: inline prefilter for the coldwater inlet of a residential water heater; purifies water before heating to protect the heater and downstream devices. Compatibility: designed for standard coldwater inlet connections in typical home plumbing systems; suitable for households using washing machines and smart toilets that benefit from cleaner water. Size and installation: compact inline design that fits in standard spaces near the water heater; easy to install on the coldwater line. Performance: filters sediment, algae, and other impurities, including certain contaminants such as red worms, to minimize scale formation and reduce protective wear on appliances. Material: construction details are not specified in the provided description; design focuses on filtration function and compatibility with common plumbing. Specific use scenarios Scenario 1: A home with an aging water heater and noticeable sediment in the cold supply. Installing the prefilter helps reduce internal scale buildup, potentially extending heater life and maintaining better hotwater performance. Scenario 2: A household with multiple waterusing appliances (washing machine, smart toilet) that are sensitive to water quality. The prefilter reduces sediment and impurities before they reach these appliances, helping improve their operation and longevity. Scenario 3: Areas with variable or poor water quality. The prefilter provides a straightforward improvement to water entering the heater and fixtures, contributing to more consistent performance and reduced maintenance. Notes This description preserves the original product's stated purpose: to filter coldwater input to the water heater and protect both the heater and downstream appliances from sediment and impurities. Exact dimensions and materials are not specified in the provided details; installation should follow standard plumbing practices for inline prefilters on coldwater lines.