Replacement Filters for the Aquaboon 3-Stage 20" Big Blue Whole-House System
Aquaboon 3-Stage 20" Big Blue
✅ Best value — replace everything at once
IPW 3-cartridge set — every replaceable stage in one order
✓ Guaranteed to fit your Aquaboon 3-Stage 20" Big Blue
📋 Typical replacement: sediment every 3–6 months · carbon every 6–12 months
1
Sediment PP
20×4.5 Big Blue
Replaces OEM AB-1S20BB5M
2
GAC granular carbon
20×4.5 Big Blue
Replaces OEM AB-1G20BB5M
3
CTO carbon block
20×4.5 Big Blue
Replaces OEM AB-1C20BB5M
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.
