iSpring Whole House Water Filters
Find ICEPURE replacement water filter cartridges compatible with select iSpring whole house systems. Match your housing model and cartridge dimensions, then compare the filter types and pack sizes below.
20″ x 4.5″ RFN20BB Whole House Iron Manganese Reduce Water Filter
20″ x 4.5″ Whole House Granular Activated Carbon Water (GAC) Filter
20″ x 4.5″ Whole House Sediment Water Filter Replacement Cartridge
5 Micron 20″ x 2.5″ Whole House CTO Carbon Water Filter
5 Micron 4.5″ x 20″ CTO20BB-CQB Water Filter for Whole House
5 Micron 4.5″ x 20″ CTO20BB-KDF Whole Home Water Filter Heavy Metal Removal
ICEPURE 1 Micron 20″ x 4.5″ Whole House Coconut Shell Carbon Filter
ICEPURE PP20BB-CC 5 Micron 20 x 4.5 Inch Water Filter for the Whole House
ICEPURE PP20GBBD 5 Micron 20 x 4.5 Inch Grooved Sediment Water Filter
ICEPURE RFN20BB-CKDF 5 Micron 20 x 4.5 Inch Whole Home Water Filter
Choose the right replacement cartridge
Match the Housing
Check the housing model, cartridge dimensions, and end-cap design against the product compatibility list.
Choose the Filter Type
Compare the filter medium and model-specific specifications with the needs of your existing system.
Check Tested Claims
Review the exact cartridge documentation for tested performance and certification scope.
Plan Replacements
Follow the cartridge and housing instructions for installation, replacement intervals, and operating limits.
Why Choose IcePure?
Made for Your Home
Explore products that fit your space and routine.
Returns & Warranty
Eligibility and time limits follow our Refund and Returns Policy.
Free Shipping
Free shipping on all contiguous U.S. orders. No minimum.
Online Technical Support
Get help with compatibility, installation guidance, and troubleshooting.
FAQs for iSpring Whole House Water Filters
How do I find a compatible replacement?
Match the housing model, cartridge length and diameter, and end-cap design against the product listing. Similar dimensions alone do not establish compatibility.
Are these complete systems or replacement cartridges?
Check the individual listing and package contents. These category listings focus on ICEPURE replacement cartridges; do not assume a housing, valve, or complete treatment system is included.
Are these original system-brand products?
These are ICEPURE replacement filters. Other brand names identify compatible systems; check the exact models listed for each cartridge.
What does the cartridge reduce?
Different media and cartridge models have different tested capabilities. Refer to the exact product documentation for reduction claims and certification scope.
When should I replace my cartridge?
Follow the cartridge and housing instructions for the replacement interval, capacity, and operating conditions. Do not assume a replacement cartridge lasts indefinitely or cleans itself.
