Inline appliances designed to remove sediment, chlorine, and other impurities from the water supply feeding a laundry appliance improve the effectiveness of detergents and protect delicate fabrics from damage. These devices can be installed between the water supply line and the appliance itself, offering varying levels of filtration depending on their design and included filter media. An example includes sediment filters for trapping rust and sand particles.
Cleaner water entering the washing machine contributes to brighter, softer laundry. By reducing mineral deposits, these filtration systems extend the lifespan of the appliance by preventing scale buildup on internal components. Historically, concerns over water hardness and its effects on laundry led to the development of various water softening and filtration methods. These evolved from simple in-line filters to more complex systems designed to address specific regional water quality issues. Protecting clothing from damage due to hard water and enhancing detergent performance have consistently been primary drivers in the adoption of such technology.