---
product_id: 567410738
title: "iSpring FC25BX4 High Capacity 4.5\" x 20\" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White"
brand: "ispring"
price: "€ 591.76"
currency: EUR
in_stock: false
reviews_count: 5
category: "I Spring"
url: https://www.desertcart.fi/products/567410738-ispring-fc25bx4-high-capacity-4-5-x-20-whole-house
store_origin: FI
region: Finland
---

# premium coconut shell activated carbon 99% chlorine removal fits standard 20"x4.5" housings iSpring FC25BX4 High Capacity 4.5" x 20" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White

**Brand:** ispring
**Price:** € 591.76
**Availability:** ❌ Out of Stock

## Summary

> 💧 Elevate your home’s water game — because your family deserves nothing less!

## Quick Answers

- **What is this?** iSpring FC25BX4 High Capacity 4.5" x 20" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White by ispring
- **How much does it cost?** € 591.76 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/567410738-ispring-fc25bx4-high-capacity-4-5-x-20-whole-house)

## 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

- • **Flow Without Compromise:** Maintains optimal water flow up to 15 GPM, ensuring your household never skips a beat.
- • **Seamless Fit, Zero Hassle:** Designed to fit standard 20" x 4.5" housings, making upgrades and replacements effortless.
- • **Support That Has Your Back:** Activate your warranty online and enjoy lifetime free tech support from a dedicated U.S.-based team.
- • **Pure Water, Pure Confidence:** Removes up to 99% of chlorine and harmful chemicals for fresh, clean water throughout your home.
- • **Eco-Friendly Filtration Power:** Crafted from high-quality coconut shell activated carbon for superior contaminant adsorption and longer filter life.

## Overview

The iSpring FC25BX4 is a high-capacity whole house water filter cartridge that fits standard 20" x 4.5" housings. Utilizing premium coconut shell activated carbon, it effectively removes up to 99% of chlorine, organic compounds, and synthetic chemicals, improving taste and odor without stripping essential minerals. Tested to NSF/ANSI standards, it supports water flow up to 15 GPM and requires replacement every 6 months or 100,000 gallons. Backed by lifetime U.S.-based tech support, it’s a reliable upgrade for any modern home seeking clean, fresh water.

## Description

Usually used as the second stage for 20 in. whole house filters. The carbon block filter is manufactured using a continuous extrusion process. It consists of a high quality virgin premium performance Activated Carbon. It is effective in reducing free chlorine, bad taste, odor THM, Organics, hazardous chemicals, and pesticides. Depending on the inlet water quality or flow rate, it needs to be replaced every 6 months or 100,000 Gal. of water.

Review: Let me just start out by saying I pride myself in being a DIY homeowner. My fiancée and I moved down to Southwest Florida in 2022 and have been struggling with our well water until I found this water filtration system. The water companies down here are gouging people anywhere between $5k and $10k for clean drinking water systems. I needed a solution to our incredibly intense sulfur smell and heavy sand/sediment buildup since we are so close to the water table down here. As you can see from my photos our water softener is designed to be outside since it never gets below freezing down here. Before I installed this whole home water filtration system by iSpring, I called and talked with them about any potential issues I may run into having their system installed outdoors. I was the year round Florida heat would be fine, but the intense solar energy from the sun could compromise the blue filter housing potentially allowing plastic to leach into our water supply. I went ahead and installed the whole filter with all the plumbing in a plastic resin container from Home Depot. I also preemptively installed a few bypass water valves behind the water filtration container in line with the house supply line incase of any future maintenance needed to be done, we could still draw water from our softener directly. I installed my system in June of 2024 and this iSpring system solved ALL of my problems! The sulfur smell was totally gone and we stopped seeing sand/sediment in our bathtub whenever we wanted to draw up a bath. I would also like to note, their system has had 0 leaks and is water tight. October 2024 Update: It has been 4 months and we are now starting to get that sulfur smell back into our water coming in the house. After calling iSpring and speaking with Michele, she informed me to get in touch with our local cooperative extension office to get a water test and bacteria test performed on our well water. Michele also graciously reassured me that our 50-micron spin down sediment filter wasn’t enough for our well system and that we needed a 100-micron filter. Michele has been incredibly informative as well as helpful in helping us get our water issues resolved. My overall takeaway with iSpring is I would give them a 10/10 and I highly recommend iSpring to anyone looking to get filtered water for their home! Customer service has been above excellent, the price for their products are very reasonable, the overall design of their system is minimal/not over complicated, and the ease of installation was a breeze!
Review: I purchased this product to correct a few issues with my well's working - sediment and Iron Manganese and taste. It has been two days since the system was operational, and my water is great - major improvements. Before I purchased the product, I called Ispring and sent my well analysis, and Sean helped me select the right product. He was Great! During the installation (which is easy), I called Ispring to clarify a topic, and Nic provided me with the answer I was looking for. Great guy and knowledgable.

## Features

- Protect Your Family and Household Appliance from Chlorine and More: Say goodbye to smelly, bad tasting water! The FC25B carbon block filter is specially designed to remove up to 99% of chlorine from water as well as various natural organic compounds, taste and odor compounds, and synthetic organic chemicals.
- Standard Size: Our filter set fits standard 20” x 4.5” housings,
- Top-Notch Quality: Our FC25B CTO Carbon Block filters are made of high-quality coconut shell activated carbon for maximum filtration efficiency and filter life. Activated carbon is an effective adsorbent because it is a highly porous material and provides a large surface area to which contaminants may adsorb. They are tested by an independent third-party to meet NSF/ANSI standards. The 20” x 4.5” filter cartridges have a minimum impact on water flow (up to 15 GPM) and require minimum maintenance
- Peace of Mind Customer Service: Register online to activate your manufacturer warranty and 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 products please reach out to us immediately. We are happy to help!
- Please Note: The cartridges are individually wrapped to ensure freshness. Please unwrap the cartridges before use. Unlike an RO membrane, the filters don’t reduce Total Dissolved Solids (TDS), and instead keeps healthy minerals in your water. If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis (RO) systems.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007TB4W8E |
| Brand | iSpring |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,866) |
| Date First Available | 1 March 2021 |
| Item Weight | 13.4 Kilograms |
| Material | Polypropylene CTO Carbon Block Activated Carbon |
| Model Number | FC25BX4 |
| Product Dimensions | 12.7 x 12.7 x 50.8 cm; 13.4 kg |

## Product Details

- **Brand:** iSpring
- **Item weight:** 29.55 Pounds
- **Material:** Polypropylene CTO Carbon Block Activated Carbon
- **Product benefits:** Protects your family and household appliance from chlorine and other contaminants
- **Product dimensions:** 11.4D x 11.4W x 50.8H centimeters

## Images

![iSpring FC25BX4 High Capacity 4.5" x 20" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White - Image 1](https://m.media-amazon.com/images/I/61IkDitdqRL.jpg)
![iSpring FC25BX4 High Capacity 4.5" x 20" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White - Image 2](https://m.media-amazon.com/images/I/61UPtOWDd5L.jpg)
![iSpring FC25BX4 High Capacity 4.5" x 20" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White - Image 3](https://m.media-amazon.com/images/I/81+lI38QYuS.jpg)
![iSpring FC25BX4 High Capacity 4.5" x 20" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White - Image 4](https://m.media-amazon.com/images/I/81PGKY30RtL.jpg)
![iSpring FC25BX4 High Capacity 4.5" x 20" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White - Image 5](https://m.media-amazon.com/images/I/91SG0ADdtdL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***Z on 16 October 2024*

Let me just start out by saying I pride myself in being a DIY homeowner. My fiancée and I moved down to Southwest Florida in 2022 and have been struggling with our well water until I found this water filtration system. The water companies down here are gouging people anywhere between $5k and $10k for clean drinking water systems. I needed a solution to our incredibly intense sulfur smell and heavy sand/sediment buildup since we are so close to the water table down here. As you can see from my photos our water softener is designed to be outside since it never gets below freezing down here. Before I installed this whole home water filtration system by iSpring, I called and talked with them about any potential issues I may run into having their system installed outdoors. I was the year round Florida heat would be fine, but the intense solar energy from the sun could compromise the blue filter housing potentially allowing plastic to leach into our water supply. I went ahead and installed the whole filter with all the plumbing in a plastic resin container from Home Depot. I also preemptively installed a few bypass water valves behind the water filtration container in line with the house supply line incase of any future maintenance needed to be done, we could still draw water from our softener directly. I installed my system in June of 2024 and this iSpring system solved ALL of my problems! The sulfur smell was totally gone and we stopped seeing sand/sediment in our bathtub whenever we wanted to draw up a bath. I would also like to note, their system has had 0 leaks and is water tight. October 2024 Update: It has been 4 months and we are now starting to get that sulfur smell back into our water coming in the house. After calling iSpring and speaking with Michele, she informed me to get in touch with our local cooperative extension office to get a water test and bacteria test performed on our well water. Michele also graciously reassured me that our 50-micron spin down sediment filter wasn’t enough for our well system and that we needed a 100-micron filter. Michele has been incredibly informative as well as helpful in helping us get our water issues resolved. My overall takeaway with iSpring is I would give them a 10/10 and I highly recommend iSpring to anyone looking to get filtered water for their home! Customer service has been above excellent, the price for their products are very reasonable, the overall design of their system is minimal/not over complicated, and the ease of installation was a breeze!

### ⭐⭐⭐⭐⭐ Review
*by M***C on 5 November 2024*

I purchased this product to correct a few issues with my well's working - sediment and Iron Manganese and taste. It has been two days since the system was operational, and my water is great - major improvements. Before I purchased the product, I called Ispring and sent my well analysis, and Sean helped me select the right product. He was Great! During the installation (which is easy), I called Ispring to clarify a topic, and Nic provided me with the answer I was looking for. Great guy and knowledgable.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 29 June 2025*

My wife and I have had this water filter system in service for just over a month now. Purchased it along with a spin down filter that precedes this system. We had a high quality water softener that we removed because our garage is small and it took up substantial space. Thus far we are very pleased with this iSpring unit. It seems to do what it claims to do. Filters sediment, chlorine, odors and other chemicals. I also believe it is likely equivalent to a couple other brands that are considerably more expensive. We spent approx $300 over what we originally budgeted because we look at capacity of an appliance vs our projected parameters. We Purchased a little larger than maybe our usage might be. Not necessarily this one but Some of these systems claim to “soften” water. I do not personally think that’s an accurate statement. The water does not have quite the same feel as our water softener provided. But the softener only softened our water and did not filter it. I think that tends to be a misconception - I think if you want “soft” water you will need an actual softener. The word I would use for this system is “CLEAN” rather than “soft”. There is a definite good feel to the water, just not the soft feel with a softener. My wife has a steam distiller for water that we do not hardly use anymore - good water is our drink of choice and we can actually drink straight from the tap now without the odorous smell, sediment and poor taste. Bottom line - Space saving, excellent results, reasonable cost vs better known brands. Time will tell but we feel like we made the right choice for us.

## Frequently Bought Together

- iSpring FC25BX4 High Capacity 4.5" x 20" Whole House Water Filter CTO Carbon Block, 4 Count (Pack of 1), White
- iSpring 5-Micron 20” x 4.5” Whole House Water Filter Cartridges, High Capacity Sediment Filter, Model Number: FP25BX2
- Captain O-Ring – Replacement ORBX2 O-Rings for iSpring WGB22B, WGB32B Series Whole House Water Filter (4 Pack)

---

## 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.fi/products/567410738-ispring-fc25bx4-high-capacity-4-5-x-20-whole-house](https://www.desertcart.fi/products/567410738-ispring-fc25bx4-high-capacity-4-5-x-20-whole-house)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-01-28*