---
product_id: 445347303
title: "Pentair Pentek C1-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Dual Purpose Powdered Activated Carbon-Impregnated Cellulose Replacement Cartridge, 20\" x 4.5\", 5 Micron , Black"
brand: "pentek"
price: "$220"
currency: NZD
in_stock: true
reviews_count: 8
url: https://www.desertcart.nz/products/445347303-pentair-pentek-c1-20bb-big-blue-carbon-water-filter-20
store_origin: NZ
region: New Zealand
---

# 40,000 gallon capacity Fits all 20" Big Blue housings Dual-purpose filtration Pentair Pentek C1-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Dual Purpose Powdered Activated Carbon-Impregnated Cellulose Replacement Cartridge, 20" x 4.5", 5 Micron , Black

**Brand:** pentek
**Price:** $220
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your home’s water game with the ultimate Big Blue filter!

## Quick Answers

- **What is this?** Pentair Pentek C1-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Dual Purpose Powdered Activated Carbon-Impregnated Cellulose Replacement Cartridge, 20" x 4.5", 5 Micron , Black by pentek
- **How much does it cost?** $220 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/445347303-pentair-pentek-c1-20bb-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

- • **Heavy-Duty Build:** Carbon-impregnated cellulose media with external netting ensures durability and superior dirt-holding capacity.
- • **All-in-One Purity Shield:** Filters sediment, chlorine, taste & odor in a single cartridge for crystal-clear water.
- • **Long-Lasting Performance:** Handles up to 40,000 gallons before replacement—keep your water fresh all year long.
- • **Certified Clean Confidence:** NSF-tested for reliable pollutant removal—because your health deserves the best.
- • **Universal Fit, Zero Hassle:** Compatible with all 20" Pentair Big Blue and heavy-duty housings—upgrade without the guesswork.

## Overview

The Pentair Pentek C1-20BB Big Blue Carbon Water Filter is a 20-inch, dual-purpose cartridge designed to fit all standard 20" heavy-duty filter housings. Featuring powdered activated carbon-impregnated cellulose media, it effectively removes fine sediment, chlorine, taste, and odor from tap water. With a robust 40,000-gallon capacity and NSF certification, this economical filter ensures clean, great-tasting water for up to a year in residential applications.

## Description

Pentair Pentek C Series Cartridges offer an economical solution for all your general-purpose water filtration needs. Constructed of a carbon impregnated cellulose media, these dual-purpose cartridges filter out fine sediment particles and reduce unwanted taste, odor, and chlorine taste & odor from your tap water. External netting provides additional strength and dirt-holding capacity. C Series Cartridges are available in a variety of sizes and are nominally rated at 5-microns. These dual-purpose cartridges are well suited for a wide range of residential applications, and make excellent polishing filters when used in process or closed-loop streams.

## Features

- DUAL-PURPOSE CARTRIDGE filters out fine sediment particles and reduces unwanted taste, odor and chlorine from your tap water in a single filter
- FITS ALL 20" Pentair Pentek Big Blue or other 20" heavy duty filter housings and can replace any 20" x 4.5" carbon filter cartridge
- ECONOMICAL WATER FILTRATION SOLUTION for use in residential chlorinated water supplies
- EXCELLENT POLISHING FILTER when used in process or closed-loop streams
- 40,000 GALLON CAPACITY. Replace every 1 year or when you notice a change in water pressure or quality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Polypropylene (PP) |
| Product Dimensions | 20.5"D x 5.5"W x 5.5"H |
| Item Weight | 2.4 Pounds |
| External Testing Certification | NSF |
| Product Benefits | Removes Pollutants |
| Brand | Pentek |
| Set Name | Big Blue |
| UPC | 051678651438 |
| Global Trade Identification Number | 00051678651438 |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Manufacturer | Pentair Industries |
| Part Number | 155651-43 |
| Item Weight | 2.45 pounds |
| Item model number | C1-20BB |
| Is Discontinued By Manufacturer | No |
| Size | 1 Count (Pack of 1) |
| Color | Black |
| Style | 20" x 4.5" |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Included Components | Carbon Water Filter |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 30 day manufacturer |

## Product Details

- **Material:** Polypropylene (PP)
- **Product Dimensions:** 20.5"D x 5.5"W x 5.5"H
- **Item Weight:** 2.4 Pounds
- **External Testing Certification:** NSF
- **Product Benefits:** Removes Pollutants

## Images

![Pentair Pentek C1-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Dual Purpose Powdered Activated Carbon-Impregnated Cellulose Replacement Cartridge, 20" x 4.5", 5 Micron , Black - Image 1](https://m.media-amazon.com/images/I/71HkVHkEsdL.jpg)
![Pentair Pentek C1-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Dual Purpose Powdered Activated Carbon-Impregnated Cellulose Replacement Cartridge, 20" x 4.5", 5 Micron , Black - Image 2](https://m.media-amazon.com/images/I/61sieKNZ64L.jpg)
![Pentair Pentek C1-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Dual Purpose Powdered Activated Carbon-Impregnated Cellulose Replacement Cartridge, 20" x 4.5", 5 Micron , Black - Image 3](https://m.media-amazon.com/images/I/71ZZBSPbwML.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this tha same as am. plumber w5cip478?**
A: Yes, this is the same filter, it just has a different brand name on the label.   Both brands (American Plumber and Pentek) are owned by Pentair.

**Q: What size are the inlet and outlet nipples?**
A: I really don't know.  They fit the filter canister that I bought from my plumber.

**Q: I have a model ccf-201 ametek filter system.  what filter will be great to replace the cartridges with?**
A: Probably best to go to the manufacturer's website and see what they recommend

**Q: What is the carbon made from? What is the cellulose powder made from?**
A: We use the C1-20 Carbon filter in our ware treatment system for our summer cabin. It is one of 4 filters, plus a UV-Light.  I assume the carbon filter is some sort of activated carbon for controlling the taste of the water. Lov2Read

## Customer Reviews

### ⭐⭐⭐⭐⭐ This filter really works!
*by J***. on February 24, 2024*

This filter really works. I live in Fort Lauderdale and for the past 10 years, I was using a different brand and I won't say the name of the Company (which begins with the letter "A"). The price of their filter is twice the cost of this brand (plus shipping), so I thought I would try this filter just to see how it worked. Well, for the past 10 years, our drinking water was clean of any noticeable sediment, however it was always a little yellow. The new Pentair filter takes out all of the sediment AND OUR WATER IS CRYSTAL CLEAR! I am not sure if you can imagine how happy I am with these results. Thanks, Pentair.

### ⭐⭐⭐⭐⭐ Fits my water system on a 2019 International Nexus Wraith
*by D***G on September 29, 2024*

Price was good. The height was dead on and no issues with installing and product was made just like the old one. Will buy again when needed.

### ⭐⭐⭐⭐⭐ Great filter! Better flow rate & longer lasting than the "stock" coconut shell carbon filters I had been using
*by B***L on July 1, 2016*

UPDATE: I'd increase this to 10 stars if I could. As a test I used the last one SIX WHOLE MONTHS! Obviously against manufacturer recommendations but in that time we had only a few times where we had chlorine smell/taste "leak" thru and that was only when we used a tremendous amount of water outside (filling kiddie pools & watering). It only lasted a few hours until the filter seemed to "catch up" as if it recuperated from the excessive use. And we use a LOT of water and our water from Detroit has a LOT of chlorine. Can't say we noticed a decrease in flow rate even after 6 months unlike other filters we've tried. So I HIGHLY recommend these filters & now have them on auto order thru Amazon. :)Decided to try these filters in our whole house casing after previously using the coconut shell filters recommended by the local water conditioning store that installed it for the 1st year. Both filters seemed to have nearly the same flow rate at 1st (at least close enough to not have discernible difference) but unlike the "stock" filters which had a very noticeable decrease in flow rate after even just the 1st month left alone by 3rd month where you couldn't take a shower while someone flushed a toilet, these Pentek show very little decrease in flow vs when 1st installed. To me that is a GIANT plus & why I'll keep using these filters. (Besides these are 1/3 of the cost on amazon vs buying from that store) So downsides? Sure.. The water inside the canister turns black but haven't seen any black water coming out of the faucets so it doesn't seem to hurt anything. But the old filters didn't do that. Another thing I noticed is if you run a LOT of water thru this filter over a short duration (such as filling a 250 gallon kiddie pool or watering the lawn a lot) there begins to be a slight chlorine smell from the taps. Our city water is VERY strong chlorine smell & taste without this filter so that doesn't surprise me really. This filter just can't keep up with massive amounts of water going thru it but I wasn't too bothered by it especially considering the filter was already months old & even then it still recovered after a day or two with little to no smell again. Although I did order a replacement from Amazon & plan to replace it soon anyway since we're approaching 6 months on this last filter. Money well spent!

## Frequently Bought Together

- Pentair Pentek C1-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Dual Purpose Powdered Activated Carbon-Impregnated Cellulose Replacement Cartridge, 20" x 4.5", 5 Micron , Black
- Pentair Pentek 158204 Traditional Slim Line Filter Housing, 1/2" NPT #20 Whole House Opaque Water Filter Housing with Pressure Relief Button, 20-Inch, Blue
- Pentair Pentek P5 Sediment Water Filter, 10-Inch, Under Sink Spun-Bonded Polypropylene Replacement Cartridge, 10" x 2.5", 5 Micron

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-09*