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iSpring FC25 High Capacity 20” x 2.5” Water Filter Replacement Cartridges - CTO Carbon Block - Fits WCB32C, WCB32O, and RCB3P

2 total reviews

Regular price $41.99
Sale price $41.99 Regular price $41.99
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In stock · Ships within 1–2 business days

iSpring FC25
$41.99

Features

iSpring filter

30K

High capacity

Our FC25 CTO Carbon Block filters have a capacity of 30,000 gallons of water, enough to supply a family of four with clean water for half a year.

CTO

Why iSpring

At iSpring, we look beyond technology to make high-quality drinking water accessible for all households. We provide our customers with professional water solutions to any water concerns you may have.

95%

High rejection rate

The FC25 carbon block filters are made of high-quality coconut shell carbon and are specially designed to remove up to 99% of chlorine from water as well as various other contaminants that cause unpleasant odors and tastes.


Support

Clean Water For the Ones You Love

Save on your water bill - the filters won’t produce any wastewater.

The filters are specially designed for a high water flow: up to 12 gallons per minute.

Fits standard 20” x 2.5” filter housings, including iSpring WCB32C & WCB32O 3-Stage Whole House Water Filtration Systems, RCB3P Reverse Osmosis System, and products of other brands.

Unlike an RO membrane, the filters don’t reduce Total Dissolved Solids (TDS), and instead keep healthy minerals in your water. If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis (RO) systems.

If you have any problems with our products, please feel free to reach out. We are always happy to help!


Product Features
5 micron 20" x 2.5" Carbon Block CTO replacement cartridges. It can remove chlorine and chemicals. It protects RO membrane and improves the taste of drinking water. It usually is used as the 3rd Stage for RO systems. Depending on supplied water quality, it is expected to be replaced every 3 to 6 months.

Product Highlights
  • Individually wrapped to keep freshness
  • Fits standard 20" housings, including brand name models

  • AvailabilityIn Stock
  • Model FC25
  • Manufacturer iSpring
  • Product Weight 2.2 LB

iSpring vs Other Brands

Feature
NSF/ANSI 58 Certification
Yes (full system certified)
Often partial or none
Verified performance & safety
Filtration Stages
Clear 3/4/5/7 stage options
Usually 4-5 stages
More complete options
Alkaline Remineralization
Available (RCC7AK/RCC7AK-UV)
Rare or expensive add-on
Better taste & pH balance
See-through 1st Stage Housing
Yes, smart flow sensor
Unavailable in most systems
Easy visual inspection
Daily Production
75 GPD (reliable output)
Often lower or overstated
Reliable daily production
Replacement Filters
Widely available & affordable
Hard or harder to find
Lower long-term cost
Installation
DIY friendly, no plumber needed
Can be more complex
Faster & easier set-up
Support & Warranty
Responsive support + solid warranty
Varies widely
Better post-purchase experience
Value for Money
High performance at competitive price
Higher price for similar specs
Better cost-effectiveness

Reviews

  • 5 stars: 2 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous
O rings

Special thanks to Robert for helping me with selecting the correct O rings

A
Anonymous
Works great!

It filters really well

Support

How to install
How to use