Premium Replacement Filter Cartridges for WF3-03 Whole House System This HQUA replacement filter set includes one PP Sediment Filter and one Activated Carbon Fiber (ACF) Filter, designed specifically for the WF3-03 whole house water filtration system. Together, they provide effective water purification to improve taste, reduce harmful contaminants, and protect your home’s plumbing and appliances. Improve Water Taste The combination of PP and ACF filters helps reduce dirt, rust, sand, silt, and other suspended solids. It also treats unpleasant odor as well as colored or cloudy water, delivering fresher and better-tasting household water. Remove Heavy Metals The Activated Carbon Fiber filter efficiently reduces heavy metals—such as lead, mercury, arsenic, cadmium, and chromium—through redox reactions. It also helps remove chlorine and various chemical contaminants, ensuring safer drinking water for your family. PFAS Reduction Capability This ACF filter helps reduce PFAS, including PFOA and PFOS, addressing emerging contaminants of concern in household water. Large-Capacity Performance Designed in standard Big Blue 20" × 4.5" size with an operating pressure range of 25–116 PSI. These filters support high household flow rates up to 15 GPM with minimal pressure drop. Each set provides up to 100,000 gallons of capacity and is recommended to be replaced every 6 months. Sediment Filter Cartridge (WF-PP20BB) Made from 100% melt-blown polypropylene without glue additives. The three-layer gradient structure offers high dirt-holding capacity, strong chemical resistance, low pressure loss, and excellent filtration efficiency for sand, silt, particulates, and rust. Activated Carbon Fiber Filter (WF-CF20BB) Crafted with advanced activated carbon fiber for rapid adsorption and high surface area contact. It helps reduce chlorine, odor, color, VOCs, and harmful chemicals. Its redox capability also targets heavy metals—improving water taste while enhancing overall water safety and quality. Designed for HQUA WF3-03 System Perfectly compatible with the WF3-03 whole house water filter system. Easy to install and maintain, providing a reliable replacement solution that restores your system’s optimal performance.