---
product_id: 3678622
title: "Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20\" x 4.5\", 5"
brand: "pentek"
price: "€ 203.33"
currency: EUR
in_stock: true
reviews_count: 8
category: "Pentek"
url: https://www.desertcart.fi/products/3678622-pentair-pentek-ep-20bb-big-blue-carbon-water-filter-20
store_origin: FI
region: Finland
---

# High porosity design prevents clogging 44,000 gallon capacity Fits all 20" Big Blue housings Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20" x 4.5", 5

**Brand:** pentek
**Price:** € 203.33
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your water game with the powerhouse filter that keeps your whole house fresh and flawless!

## Quick Answers

- **What is this?** Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20" x 4.5", 5 by pentek
- **How much does it cost?** € 203.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/3678622-pentair-pentek-ep-20bb-big-blue-carbon-water-filter-20)

## Best For

- pentek enthusiasts

## Why This Product

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

## Key Features

- • **Certified Peace of Mind:** NSF International tested and certified to guarantee water safety and consistent performance you can trust.
- • **Maximized Filter Longevity:** High porosity design ensures extended filter life by preventing premature clogging and maintaining optimal flow.
- • **Massive 44,000 Gallon Capacity:** Enjoy up to a year of premium filtration before replacement, perfect for busy households and professionals on the go.
- • **Universal 20-Inch Compatibility:** Seamlessly fits all 20" Big Blue and heavy-duty housings for hassle-free upgrades and replacements.
- • **Ultimate Chlorine & Odor Defense:** Experience cleaner, fresher water with superior chlorine taste and odor reduction that outperforms standard carbon blocks.

## Overview

The Pentair Pentek EP-20BB Big Blue Carbon Water Filter is a 20-inch whole house replacement cartridge featuring bonded powdered activated carbon for superior chlorine and odor reduction. Designed with a high porosity structure to prevent clogging, it fits all standard 20" Big Blue housings and offers an impressive 44,000-gallon capacity. NSF certified for safety and reliability, this filter ensures long-lasting, clean water for residential and commercial use.

## Description

Pentair Pentek EP Series Carbon Block Cartridges are manufactured using a process that yields a cartridge with a nominal 5- filtration rating and high dirt-holding capacity. A high porosity design helps the cartridge from plugging before its adsorption capacity is exhausted, maximizing the utilization of the carbon while maintaining low pressure drop. These cartridges are protected by a uniquely formulated polyolefin bilaminate pre-filter, designed to significantly increase the useful life of the cartridge by trapping sediment that typically plugs carbon block cartridges. EP Series Cartridges make an ideal choice for a wide range of residential, food service, commercial and industrial applications.

Review: These filters work flawlessly. - I have been ordering the Pentair Pentek EP-10 Carbon Water Filter, 10-Inch .5 micron for a few years. This product performs as expected and has a consistent performance time range that I appreciate. I've come to be able to install them fairly easily and I change them without excessive effort! Thank you for a great product and the confidence of keeping my water system clean & clear of minerals & contaminants.
Review: Great filters and great price - These filters were quite similar to the ones installed by Culligan. Quality seems great, it’s easy to install yourself, and the water flow issue was resolved by replacing old filter by this filter brand.

## Features

- GREATER CHLORINE TASTE and ODOR REDUCTION than competitive 10 carbon blocks
- FITS ALL 20" Big Blue or other heavy duty housings and can replace any 20" x 4.5" carbon filter cartridge
- HIGH POROSITY DESIGN helps the cartridge from plugging before its adsorption capacity is exhausted
- NSF INTERNATIONAL tested and certified for your peace of mind
- 44,000 GALLON CAPACITY. Replace every year or when you notice a drop in water pressure or water quality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Pentek |
| External Testing Certification | NSF, ANSI |
| Item Weight | 5.65 Pounds |
| Material | Extruded Carbon Block |
| Product Benefits | Reduces Chlorine, Removes Odor |
| Product Dimensions | 4.63"D x 4.63"W x 20"H |

## Product Details

- **Material:** Extruded Carbon Block
- **Product Dimensions:** 4.63"D x 4.63"W x 20"H
- **Item Weight:** 5.65 Pounds
- **External Testing Certification:** NSF, ANSI
- **Product Benefits:** Reduces Chlorine, Removes Odor

## Images

![Pentair Pentek EP-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Carbon Block Replacement Cartridge with Bonded Powdered Activated Carbon (PAC) Filter, 20" x 4.5", 5 - Image 1](https://m.media-amazon.com/images/I/610dgCvwJ4L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: where is it made?**
A: This product is made in the USA.

**Q: when it says "reduces . . . chlorine taste" does this mean it removes chlorine from water or just alters it in some way that you don't taste it?**
A: No carbon will remove the chlorine may not be 100% but you will definitely tell a difference if chlorine is all your dealing with then no need for a 5mic carbon go just carbon it's cheaper if you ever decide you want a water softener it's best to remove the chlorine first... But a great 1x20 filter

**Q: Does it fit inside 10filter housing**
A: I assume you are asking if this cartridge fits in the shorter "big blue" filter housing ... While its actually closer to 13"×7" they refer to it by average filter size which is 10"×4.5". That's a really good question since nowhere does it state which housing to use with it. Dimensions shown for this cartridge are 4.6"×4.6"×9.8". Dimensions for the Big Blue® housing are approx 7.25"×7.25"×13" and calling for a filter approximately 4.5"×10".  This is the housing and filter combination that I use. The cartridge fits snugly and allows proper water flow in that housing.

**Q: Our municipal water in San Francisco is pretty clean, how long before this filter cartridge is recommended for replacement?**
A: This cartridge is rated for 6,000 gallons.  If kitchen sink only, should provide drinking water for a year.  If whole house, run 2 in parralel to get needed flow, the pair might last 3 months.

## Customer Reviews

### ⭐⭐⭐⭐⭐ These filters work flawlessly.
*by R***F on January 27, 2026*

I have been ordering the Pentair Pentek EP-10 Carbon Water Filter, 10-Inch .5 micron for a few years. This product performs as expected and has a consistent performance time range that I appreciate. I've come to be able to install them fairly easily and I change them without excessive effort! Thank you for a great product and the confidence of keeping my water system clean & clear of minerals & contaminants.

### ⭐⭐⭐⭐⭐ Great filters and great price
*by A***I on July 12, 2025*

These filters were quite similar to the ones installed by Culligan. Quality seems great, it’s easy to install yourself, and the water flow issue was resolved by replacing old filter by this filter brand.

### ⭐⭐⭐⭐⭐ Great replacement filter!
*by L***T on November 17, 2025*

Exactly what you need! Fits perfectly, high quality filter.

## Frequently Bought Together

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-27*