---
product_id: 42458443
title: "iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal"
brand: "ispring"
price: "57864 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "I Spring"
url: https://www.desertcart.hu/products/42458443-ispring-fc25b-whole-house-water-filter-cto-carbon-block-20
store_origin: HU
region: Hungary
---

# Coconut shell activated carbon 15 GPM max flow 99% chlorine removal iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal

**Brand:** ispring
**Price:** 57864 Ft
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your home water game — pure, fresh, and always flowing!

## Quick Answers

- **What is this?** iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal by ispring
- **How much does it cost?** 57864 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/42458443-ispring-fc25b-whole-house-water-filter-cto-carbon-block-20)

## 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

- • **Effortless Flow:** Maintains up to 15 gallons per minute with minimal pressure drop
- • **Lifetime Support:** Register for free lifetime US-based tech support and unmatched customer care
- • **Whole House Purity:** Filters sediment & chlorine for crystal-clear water throughout your home
- • **Premium Carbon Block:** High-porosity coconut shell carbon ensures superior contaminant adsorption
- • **NSF Certified Assurance:** Independently tested to meet rigorous water quality standards

## Overview

The iSpring FC25B is a 20” x 4.5” whole house CTO carbon block water filter designed to remove up to 99% of chlorine, sediment, and odor compounds while maintaining healthy minerals. It supports a high flow rate of 15 GPM, uses premium coconut shell activated carbon for maximum filtration efficiency, and is NSF/ANSI certified. Backed by lifetime US-based customer support, it’s the trusted choice for millennial professionals seeking clean, great-tasting water throughout their home.

## Description

iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal - desertcart.com

Review: iSpring is really your only option - Product: iSpring WGB32B 3 Stage whole house filter. Date installed: June, 2022 First Filter change: May, 2023 (note house is barely used from Nov to May, seasonal log cabin) Upstate NY, well water Filters: Sediment filter => GAC+KDF filter => CTO Carbon filter Professional plumber install - paid $800, well worth it, they have the tools, they have the skills, they have the patience, well, most of the time. To do it over again: would 100% get the Spin-down filter to lessen load on sediment filter. May still do this but may not have room. Nick, if you're reading this and seeing the pics, what do you think? We research every major purchase, whole house filter was a major need. Built a log cabin on a small lake in the Adirondack park in upstate NY. Well drilled about 200'. Water is potable, tested several times, but there was some flakey silver particles and other sediment in the toilette and clogging up the screens. Water tasted just fine but needed to get rid of this sediment. We looked at several companies and settled with iSpring for the sheer quality of their product and the amazing customer support. I dealt with Nick in the beginning of the purchase process and he guided me to the right product and the right filter combinations. Nick is incredibly knowledgeable, patient and understand customer service and a good dude. Was going to give it go to install it myself as there are good videos out there but went the professional plumber route and glad I did. We included a bunch of shut-off valves with a bypass and plumber put in a faucet to relieve the pressure when you change the filters (great idea). I wish he had put a pressure valve before the filter system and afterwards to see if there's pressure drop. We had one small issue which was one of the cannisters was damaged in transport (threads). Called iSpring, luckily Nick picked up, and he sent me replacement right away. Installed with no leaks, no issues. You will notice what the sediment filter is picking up which is amazing that was going through the house and we were drinking it. Water is clear, no sediment in toilette bowl or the faucet screens and taste amazing - neighbors come here now to fill their water bottles. We changed the filters after 11 months (6 months of heavy use). Sediment filter was replaced (obviously after seeing the pics), KDF filter was fine, carbon filter replaced but looked okay too (see pics). We finished our basement over the winter and the unit is now enclosed. Note: not easy removing the housing to change the filters, you will need two of those wrenches for sure. They're heavy when full of water so have a bucket underneath. When re-installing, don't overtighten and make sure your gasket is good and apply a bit of silicone to it before spinning it back on. Make this purchase, you will be amazed and even more amazed by the excellent support you get - that's what really did it for us as iSpring stands out in this area. Thanks Nick and the entire team there.
Review: Top Performance with THE Greatest Customer Support - I installed this 3-stage system in 2020. I was impressed by the quality and the ease of installation. The water quality immediately improved in taste, clarity/turbidity and scale build-up. We have been VERY pleased with the performance and cost effectiveness of this System & the iSpring replacement filters. Additionally, over the years, whenever I had a question, a call to Customer Support got me to a LIVE knowledgable person with real answers. Recently, after 5 years of use, one of the filter caps (black female threaded piece that accepts the blue filter housing) developed a crack. I called Customer Support first thing to check about a replacement repair part. Within seconds my call was answered by Nick and within 2 minutes Nick thoroughly understood my situation. He indicated, even though I was well beyond warranty, he would ship me a complete new top machine head (all 3 black caps assembled together in a new mounting bracket). All Nick needed was a copy of my original invoice and my shipping address. This Customer Support was the BEST I have ever received (and I’m a 77 year-old Handyman/Engineer). Entire call lasted less than 5 minutes and the whole mood was positive and focused on fixing my issue. Oh, additionally, the Machine Head arrived in less than 2-½ days (55 hrs.from my call!!)!! HIGHLY RECOMMEND!

## Features

- Protect Your Family and Household Appliance from Chlorine and More: Say goodbye to smelly, bad tasting water! The FC25B carbon block water filter is specially designed to remove up to 99% of chlorine from water as well as taste and odor compounds, cloudiness, and chemicals.
- Standard Size: Our FC25B whole house water filter fits standard housings that requires 20” x 4.5” water filter cartridges, including brand name models. The 20” x 4. 5” water filter cartridge has a minimum impact on water flow (up to 15 GPM) and require minimum maintenance
- 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. This whole house water filter is tested by an independent third-party to meet NSF/ANSI standards.
- Peace of Mind Customer Service: Register online to activate your manufacturer 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 water filters please reach out to us immediately. We are happy to help!
- Please Note: The water filter 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 | B01M1197LW |
| Best Sellers Rank | #10,012 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Under-Sink & Countertop Filtration |
| Brand | iSpring |
| Date First Available | October 6, 2016 |
| Global Trade Identification Number | 00662425080250 |
| Installation Type | Whole House Water Tank |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.19 pounds |
| Item model number | 1 |
| Manufacturer | iSpring Water Systems |
| Maximum Flow Rate | 15 Gallons Per Minute |
| Model Name | High Capacity 20” x 4.5” Water Filter |
| Power Source | Ac |
| Product Dimensions | 5.98"L x 5.98"W x 22.01"H |
| Special Feature | Chlorine Reduction, NSF certified |
| UPC | 662425080250 |
| Upper Temperature Rating | 125 Degrees Fahrenheit |

## Product Details

- **Brand:** iSpring
- **Capacity:** 15 Gallons per Minute
- **Included Components:** 1 Whole House CTO Carbon Block
- **Installation Type:** Whole House Water Tank
- **Item Weight:** 2.36 Kilograms
- **Material:** Carbon Block
- **Power Source:** Ac
- **Product Dimensions:** 5.98"L x 5.98"W x 22.01"H
- **Purification Method:** Activated Carbon, Carbon Block
- **Special Feature:** Chlorine Reduction, NSF certified

## Images

![iSpring FC25B Whole House Water Filter, CTO Carbon Block, 20” x 4.5” for Sediment & Chlorine Removal - Image 1](https://m.media-amazon.com/images/I/61y2R3tF6qL.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

### ⭐⭐⭐⭐⭐ iSpring is really your only option
*by L***T on June 7, 2023*

Product: iSpring WGB32B 3 Stage whole house filter. Date installed: June, 2022 First Filter change: May, 2023 (note house is barely used from Nov to May, seasonal log cabin) Upstate NY, well water Filters: Sediment filter => GAC+KDF filter => CTO Carbon filter Professional plumber install - paid $800, well worth it, they have the tools, they have the skills, they have the patience, well, most of the time. To do it over again: would 100% get the Spin-down filter to lessen load on sediment filter. May still do this but may not have room. Nick, if you're reading this and seeing the pics, what do you think? We research every major purchase, whole house filter was a major need. Built a log cabin on a small lake in the Adirondack park in upstate NY. Well drilled about 200'. Water is potable, tested several times, but there was some flakey silver particles and other sediment in the toilette and clogging up the screens. Water tasted just fine but needed to get rid of this sediment. We looked at several companies and settled with iSpring for the sheer quality of their product and the amazing customer support. I dealt with Nick in the beginning of the purchase process and he guided me to the right product and the right filter combinations. Nick is incredibly knowledgeable, patient and understand customer service and a good dude. Was going to give it go to install it myself as there are good videos out there but went the professional plumber route and glad I did. We included a bunch of shut-off valves with a bypass and plumber put in a faucet to relieve the pressure when you change the filters (great idea). I wish he had put a pressure valve before the filter system and afterwards to see if there's pressure drop. We had one small issue which was one of the cannisters was damaged in transport (threads). Called iSpring, luckily Nick picked up, and he sent me replacement right away. Installed with no leaks, no issues. You will notice what the sediment filter is picking up which is amazing that was going through the house and we were drinking it. Water is clear, no sediment in toilette bowl or the faucet screens and taste amazing - neighbors come here now to fill their water bottles. We changed the filters after 11 months (6 months of heavy use). Sediment filter was replaced (obviously after seeing the pics), KDF filter was fine, carbon filter replaced but looked okay too (see pics). We finished our basement over the winter and the unit is now enclosed. Note: not easy removing the housing to change the filters, you will need two of those wrenches for sure. They're heavy when full of water so have a bucket underneath. When re-installing, don't overtighten and make sure your gasket is good and apply a bit of silicone to it before spinning it back on. Make this purchase, you will be amazed and even more amazed by the excellent support you get - that's what really did it for us as iSpring stands out in this area. Thanks Nick and the entire team there.

### ⭐⭐⭐⭐⭐ Top Performance with THE Greatest Customer Support
*by Y***K on April 23, 2025*

I installed this 3-stage system in 2020. I was impressed by the quality and the ease of installation. The water quality immediately improved in taste, clarity/turbidity and scale build-up. We have been VERY pleased with the performance and cost effectiveness of this System & the iSpring replacement filters. Additionally, over the years, whenever I had a question, a call to Customer Support got me to a LIVE knowledgable person with real answers. Recently, after 5 years of use, one of the filter caps (black female threaded piece that accepts the blue filter housing) developed a crack. I called Customer Support first thing to check about a replacement repair part. Within seconds my call was answered by Nick and within 2 minutes Nick thoroughly understood my situation. He indicated, even though I was well beyond warranty, he would ship me a complete new top machine head (all 3 black caps assembled together in a new mounting bracket). All Nick needed was a copy of my original invoice and my shipping address. This Customer Support was the BEST I have ever received (and I’m a 77 year-old Handyman/Engineer). Entire call lasted less than 5 minutes and the whole mood was positive and focused on fixing my issue. Oh, additionally, the Machine Head arrived in less than 2-½ days (55 hrs.from my call!!)!! HIGHLY RECOMMEND!

### ⭐⭐⭐⭐⭐ A Must Have Water Filtration System For Rural Housing
*by T***R on December 11, 2023*

I did not realize all my water problems stemmed from a lack of a water filtration system. In 2016, we purchased a house built in 1980 and figured if it worked for 36 years without a system there would not be a need to add one. We were completely wrong and caught off guard when our water heater stopped working. Corrosive water caused both heating elements to fail and upon further investigation, we found that the 55 Gallon water heater was filled with over 6 gallons of mineral sediments. After researching several products, I selected this one manufactured by i-Spring and could not be more pleased. Installation of the system was not overly complicated. I watched a few youtube videos on how to solder and went to work. I did add a bypass loop so I can still have running water when doing a filter change, but I really don't plan on having to use it. I also placed pressure gauges on both sides of the water filter assembly and the readings confirm that the pressure drop across the filters is negligible. I've had the system installed for almost a year now, and it is nothing less than a godsend. The water quality coming out of the sinks is just as good as any refrigerator filtered water. The dishwasher no longer leaves spots, plumbing fixtures no longer have mineral build-up, faucet aerators fun clean, and showers no longer leaves the skin dry. If you're looking for a whole house water filtration system that you can install yourself, this is the one. I can also say after a year of use, the i-Spring product has held up extremely well and trouble free. You will notice a difference in water quality with the first 10 gallons you run out of the pipes.

## Frequently Bought Together

- iSpring FC25B NSF Certified High Capacity Big Blue Whole House Water Filter CTO Carbon Block, 4.5" x 20"
- iSpring FM25B 4.5" x 20" Big Blue High Capacity Iron Manganese Reducing Replacement Water Filter

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-01-23*