---
product_id: 256972724
title: "iSpring Whole House Water Filter Cartridge, Iron & Manganese Reducing Water Filter Whole House, 4.5\" x 20\", Model: FM25B"
brand: "ispring"
price: "R4297"
currency: ZAR
in_stock: true
reviews_count: 5
category: "I Spring"
url: https://www.desertcart.co.za/products/256972724-ispring-whole-house-water-filter-cartridge-iron-and-manganese-reducing
store_origin: ZA
region: South Africa
---

# Lasts up to 50,000 gallons (~12 months) High flow rate with minimal pressure drop Reduces iron & manganese to 0.01 ppm iSpring Whole House Water Filter Cartridge, Iron & Manganese Reducing Water Filter Whole House, 4.5" x 20", Model: FM25B

**Brand:** ispring
**Price:** R4297
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your home’s water game—because pure water is the new luxury.

## Quick Answers

- **What is this?** iSpring Whole House Water Filter Cartridge, Iron & Manganese Reducing Water Filter Whole House, 4.5" x 20", Model: FM25B by ispring
- **How much does it cost?** R4297 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/256972724-ispring-whole-house-water-filter-cartridge-iron-and-manganese-reducing)

## Best For

- ispring enthusiasts

## Why This Product

- Trusted ispring brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Filter lifespan triples standard media—up to 50,000 gallons of clean water.
- • **Effortless Flow:** Enjoy powerful filtration with less than 5 psi pressure drop at 8 GPM.
- • **Certified Safety:** Meets FDA & NSF/ANSI standards for drinking water you can trust.
- • **Support That Cares:** Lifetime free US-based tech support ensures zero downtime.
- • **Ultra-Pure Hydration:** Slash iron from 3.0 ppm to near zero for crystal-clear water.

## Overview

The iSpring FM25B whole house water filter cartridge expertly reduces iron and manganese levels from up to 3.0 ppm and 1.0 ppm down to 0.01 ppm, delivering cleaner, healthier water throughout your home. Designed for high flow rates with minimal pressure loss, it supports feed water pressures from 20 to 100 psi and lasts up to 50,000 gallons or about 12 months. Built with durable catalytic media, it outperforms traditional green sand filters and complies with FDA and NSF/ANSI standards. Backed by lifetime US-based tech support, this filter is a reliable upgrade for any modern household seeking premium water quality.

## Description

Iron & Manganese ReducingiSpring iron & manganese reducing filter efficiently reduces iron (max 3. 0 ppm down to 0. 01 ppm) and manganese (max 1. 0 ppm down to 0. 01 ppm)Filtration Capacity: 50k gal at 3. 0ppm for iron

Review: Danke werde wieder bestellen
Review: I couldn't be happier with my experience with iSpring Filters. The product itself is excellent -high quality, well-built, and performs exactly as advertised. What really stood out, though, was the customer service. I had an issue with a filter that malfunctioned, and Nick from iSpring went above and beyond to help. He was responsive, professional, and immediately sent replacement filters without any hassle. That level of support is rare these days and truly appreciated. It's clear that iSpring stands behind their products and genuinely cares about their customers. Thanks again to Nick for making the process smooth and stress-free. I highly recommend iSpring Filters to anyone looking for reliable water filtration and top- tier customer service.

## Features

- Replacement filters for iSpring whole house water filter systems (fits systems WGB32BM and WGB22BM)
- Powerful Iron & Manganese Reducing: iSpring FM25B whole house water filter cartridge is specially designed for iron & manganese removal, reducing iron (MAX 3.0 ppm down to 0.01 ppm) and manganese (MAX 1.0 ppm down to 0.01 ppm).
- Efficient performance: This iron filter whole house has higher linear velocities than conventional media and delivers high flow rates & very low pressure drop. Feed water pressure: 20 - 100 psi. Pressure impact: up to 5 psi drop at a flow rate of 8 gpm. The iSpring FM25B whole house filter effectively removes harmful substances, improves water quality, and protects family health.
- Excellent Stability and Durability: Stable and satisfactory performance at a wide pH range 5.8 - 8.6 and temperature range 40 - 113F. FM25B whole house water filter lasts up to 3 times longer than green sand due to the catalytic media not being consumed in the process. Filter life: 50,000 gallons at 3.0 ppm iron level, or about 12 months @ 200GPD.
- High Quality Requirements: Safe for Drinking Water Applications. The water filter is manufactured to comply strictly with FDA standards and tested by independent third party against NSF/ANSI standards for water quality, material safety and structural integrity. Life-time free tech support from U. S. local support team. We stand behind our products and if you encounter any problems with any of our water filters please reach out to us immediately. We are happy to help!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01A05Q3MI |
| Best Sellers Rank | #109,838 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #408 in Replacement Water Filters |
| Brand | iSpring |
| Capacity | 50000 Gallons |
| Color | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (545) |
| Date First Available | 1 January 2024 |
| Item Weight | 3.63 Kilograms |
| Material | Iron |
| Model Number | FM25B |
| Product Dimensions | 11.43 x 11.43 x 50.8 cm; 3.63 kg |
| Special Features | Multi Stage Filtration, Iron & Manganese Reducing |

## Product Details

- **Brand:** iSpring
- **Capacity:** 50000 Gallons
- **Included components:** 1 FM25B filter
- **Material:** Iron
- **Special features:** Multi Stage Filtration, Iron & Manganese Reducing

## Images

![iSpring Whole House Water Filter Cartridge, Iron & Manganese Reducing Water Filter Whole House, 4.5" x 20", Model: FM25B - Image 1](https://m.media-amazon.com/images/I/51-hRqU8k+L.jpg)

## Questions & Answers

**Q: We are looking to install this in a seasonal cabin, can this be winterized?**
A: Hi Cate,

This unit should be protected from direct sunlight or freezing temperature.  Depending on the environment in the winter, the housings might become damaged. Please contact us with more details so we can better assist you.

iSpring Water Systems
678-261-7611 support@ispringfilter.com

**Q: I received this whole house filter and one of the cartridges is broken model fc25b. can i get a replacement of this broken cartridge?**
A: allfilters.com 
I used iSpring for a while and then the types of filters ordered was so confusing......and its all made in China.......unlike advertised. So I switched to allfilters....now keep in mind that they don’t send one at a time....but the price difference, the nonconfusion, sent by USPS and customer support won me over. ALL MADE IN THE USA! Allfilters also sells the canisters. When ordering filters go by the size ei: 4 1/2” x 20”

**Q: Do you still need a water softener with this if hardness is 250 ppm?**
A: Hi there, It's optional but would help p[rolong the life of the filters if you install one. We usually recommend a water softener with TDS higher than 700 PPM. Please let us know if you have other concerns. Stay safe!

iSpring Water Systems, LLC

**Q: What pressure gauge is recommended to install pre and post filter that will work with 3/4" PEX supply line?**
A: I use the one on a spin down pre filter and a 
3/4” shark bite with gauge post filter

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***S on 26 July 2025*

Danke werde wieder bestellen

### ⭐⭐⭐⭐⭐ Review
*by W***I on 6 January 2026*

I couldn't be happier with my experience with iSpring Filters. The product itself is excellent -high quality, well-built, and performs exactly as advertised. What really stood out, though, was the customer service. I had an issue with a filter that malfunctioned, and Nick from iSpring went above and beyond to help. He was responsive, professional, and immediately sent replacement filters without any hassle. That level of support is rare these days and truly appreciated. It's clear that iSpring stands behind their products and genuinely cares about their customers. Thanks again to Nick for making the process smooth and stress-free. I highly recommend iSpring Filters to anyone looking for reliable water filtration and top- tier customer service.

### ⭐⭐⭐⭐ Review
*by A***D on 1 June 2021*

لقد جربته وهو منتج رائع .. ولكن سعر مرتفع .

## Frequently Bought Together

- iSpring Whole House Water Filter Cartridge, Iron & Manganese Reducing Water Filter Whole House, 4.5" x 20", Model: FM25B
- iSpring WSP-1000 Reusable Whole House Spin Down Sediment Water Filter, 1000 Micron, Flushable Prefilter Filtration, 20GPM, 1" MNPT + 3/4" FNPT, Brass
- iSpring ORBX2 Replacement O-ring for Whole House Water Filtration Systems - Pack of 2

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.za/products/256972724-ispring-whole-house-water-filter-cartridge-iron-and-manganese-reducing](https://www.desertcart.co.za/products/256972724-ispring-whole-house-water-filter-cartridge-iron-and-manganese-reducing)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-07*