Three Cuno Aqua-Pure AP431 compatible replacement water filter cartridges. The KleenWater KW431 is an alternative replacement cartridge to the AP430 system.
Significantly prolongs the life and improves efficiency of traditional and tankless hot water systems.
Protects hot water systems from acidic corrosion and hard water scale.
Saves energy which is both environmentally friendly and economical.
Change cartridge every 6 months.
The KleenWater KW431 "hot water protector" cartridges is offered at an aggressive price with free USPS Priority Mail shipping. The active ingredient phosphate, sequesters or binds calcium & magnesium hardness minerals, preventing them from precipitating out of solution and building up on metallic surfaces. Phosphate also forms a thin protective layer on the pipe wall or metallic surface which helps to eliminate hardness build up and corrosion.