Replacement Filters for the Pentair/Pelican PSE1800 3-Stage Whole-House System
Pentair/Pelican PSE1800
✅ Best value — replace everything at once
IPW 1-cartridge set — every replaceable stage in one order
✓ Guaranteed to fit your Pentair/Pelican PSE1800
📋 Typical replacement: sediment every 3–6 months · carbon every 6–12 months · tank media every 3–10 years
1
Sediment pre-filter cartridge
10×4.5 Big Blue
Replaces OEM 5-micron sediment (10x4.5)
2
Catalytic GAC carbon media tank (~5yr)
Tank media bed
Media bed — not a drop-in cartridge
3
NaturSoft TAC salt-free media tank (lifetime)
Tank media bed
Media bed — not a drop-in cartridge
Not sure this is your system? Use the Isopure Water Filter Finder → Match by system name, by the part number on your cartridge, or by photo.
Compatibility reference only. Photos of complete systems shown on this page are provided to help you identify your unit and confirm that our filters fit. All brand names, model numbers, and product images are the property of their respective owners; Isopure Water (IPW Industries Inc.) is not affiliated with, sponsored by, or endorsed by these manufacturers. We sell compatible replacement filters and parts — not the branded systems pictured, unless a system is separately listed for sale on our store.
