Complete System NSF Certified to remove 97% of chlorine Only the best whole house systems on the market can boast full system NSF Certification. The HF-600 AquaH2O is NSF tested and certified to remove 97% of chlorine for 600,000 gallons or 6 years. Just 1 Hahn Whole House Water Filter can supply long-lasting, high-performance water filtration for great-tasting, healthy water throughout your entire home and can accommodate a Family of 4 in Homes up to 3,500 sq. ft. with up to 3.5 Bathrooms. Smarter Design - Engineered to maximize potent filtration media for ultimate performance. The HAHN AquaShield's unique upflow, dual tank design increases water contact time with contaminant grabbing media and prevents clogging or media channeling. Unlike other whole house filters that require messy, complicated media replacements, HAHN AquaShields are designed for quick, easy tank replacements. Long-lasting systems last 6 years or 600,000 gallons before needing to be replaced. Aquasoft Salt-Free Water Softener Tired of hard water and scale HAHN AquaSoft uses proven salt-free NAC technology to prevent scale formation and protect pipes and plumbing from corrosion. Better than just a softener, HAHN AquaSoft won't demineralize your water by chemically removing minerals, nor will it put excess salt waste or chemicals into your water or the environment. Independently tested and proven to reduce scale by 99.6%