Continue to enhance your water quality with the NuvoH2O® Home Duo Replacement Cartridge and Filter, specifically engineered for the NuvoH2O Home Duo System. This replacement cartridge offers a seamless blend of water softening and filtration, completely free from salt, to deliver consistently soft and palatable water. Designed for effortless installation, it's an ideal match for your NuvoH2O Home Duo System, ensuring your water softening system operates at peak efficiency. With a lifespan of 20,000 gallons or up to six months, this cartridge simplifies your water maintenance routine, making it a hassle-free choice for those seeking a reliable, salt-free water softening solution.