P1+ 2-Stage Defender
Replacement Kit
The P1+ 2-Stage Replacement Kit contains the complete two-cartridge set for your 2-Stage Defender system. Built for mid-sized homes and families of three to four, it restores full filtration performance with up to 480,000 L of capacity.
Every kit ships with the full set of cartridges your Defender system needs — no part numbers to match.
Restores your Defender system’s filtration capacity for clean water throughout the home.
Homeowner-friendly cartridge swaps completed in under 5 minutes, with no professional installation required.
Powered by advanced filtration media for high-flow, long-lasting whole-home performance.
Replace annually for peak performance — up to 2 years maximum depending on water quality and household use.
Order summary
Final taxes calculated at checkout. Ships within 1–3 weeks.
Backed by our 30-day Pure Promise