iSpring FC25B High Capacity 20" x 4.5" Water Filter Replacement Cartridge - Carbon Block - Fits Standard 20" x 4.5" Whole House Water Filter Systems

Regular price $71.99
Sale price $71.99 Regular price $71.99
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  • 1-Year Warranty
  • 30-Day Return
  • Lifetime Tech Support
iSpring FC25B
$71.99

Features

iSpring FC25B Water Filter Replacement Cartridge

Whole Home Water Filter System with Quality

iSpring provides great quality products

Why iSpring?

Located in Atlanta, Georgia for over a decade, iSpring Water Systems LLC is a family-owned company specializing in water filtration systems. With a high emphasis on strict quality control, we aim to make high-quality drinking water accessible to all households.

Water goes through Carbon Block filter

iSpring FC25B Carbon Water Filter

iSpring FC25B carbon block water filter uses high-quality coconut shell carbon and highly compact fabrication tech for maximum filtration efficiency and filter life. It filters up to 100,000 gallons of water (or lasts up to 12 months) and removes up to 99% of chlorine from water, as well as color, cloudiness, and various taste and odor compounds.

Test before Purchase for Well Water Users

Test before Purchase for Well Water Users

If you are on well water, we recommend getting your water tested before purchasing this water filter for the best results. If you have any questions or need any product recommendations, please feel free to reach out. We are happy to help!

iSpring Whole House Water Filters don’t remove TDS or Total Dissolved Solids. If you need a system that removes TDS, please instead check out our reverse osmosis systems.

Whole House Water Filter that Gives You a Peace of Mind

FC25B is high capacity filter

High Capacity with No Pressure Loss

  • Depending on your water quality and water use, these whole home water filter cartridges can provide you and your family up to a full year of clean water with no pressure loss.
  • Save on your water bill - these whole house water filters won’t produce any wastewater.
  • A high flow rate of up to 15 gallons per minute.
Compatible with WGB32B & WGB22B

Fits iSpring WGB32B & WGB22B Series Whole House Water Filter

  • Fits iSpring WGB32B & WGB22B Series whole house water filter systems or other water filters that require 20” x 4.5” filter cartridges
  • If you encounter any leakage during filter changes, please let us know, and we will make it right for you.
iSpring provides life time customer support

Give You a Peace of Mind

  • We offer tech and CS support via phone and email from Atlanta, GA.
  • Contact our responsive and professional team for product selection that suits your water filtration needs.
  • Now, and years to come, we will be right here and ready to help.
  • If you have any questions, feel free to reach out! We stand behind our products and are always here to help!
  • Size
  • 4.5" x 20"
  • 4.5" x 20"
  • 4.5" x 20"
  • 4.5" x 20"
  • 4.5" x 20"
  • 4.5" x 20"
  • Filtration
  • 5 Micron or 20 Micron Sediment Reducing
  • Chlorine Reducing
  • Iron & Manganese Reducing
  • Lead Reducing
  • Anti-Scale
  • Heavy Metals Reducing
  • Material
  • High-Capacity Polypropylene
  • High-Quality Coconut Shell Carbon
  • Catalytic Media (No Chemical Added)
  • Ion Exchange Resin
  • Patented Scale Inhibitor
  • GAC + KDF
  • Life Cycle
  • Up to 100,000 Gallons (12 Months)
  • Up to 100,000 Gallons (12 Months)
  • 50,000 Gallons at 3.0 ppm Iron Level
  • 150,000 Gallons at 100 ppb Lead Level
  • Up to 150,000 Gallons (12 Months)
  • Up to 150,000 Gallons (12 Months)
Customer service process of iSpring

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

Support

How to install