NCHP-42516 NUVO H2o Complete Replacement Filter and Cartridge 50,000 Gallon Complete System replacement filter and softener cartridge. This dual system provides the homeowner with a whole home carbon filter for better tasting/smelling water, and a water softener cartridge to protect your home from the effects of hard water.Easy installation- our cartridges can be replaced by simply unscrewing the canisters from the head, and replacing the old cartridge with the new oneNo slimy feel- because the complete system doesn't remove the minerals in the water, your water will not have that slimy, can't wash off the soap feelingEco friendly- no wasted water, no electricity, and no drain needed for this systemEffective- the complete system is effective at removing contaminants in the water for better tasting/better smelling water, as well as removing existing/stopping scale found in your pipes, appliances, etc.