--- 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: "660.30 DT" currency: TND in_stock: true reviews_count: 13 category: "Pentek" url: https://www.desertcart.tn/products/3678622-pentair-pentek-ep-20bb-big-blue-carbon-water-filter-20 store_origin: TN region: Tunisia --- # 44,000 gal capacity High porosity carbon block 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:** 660.30 DT **Availability:** ✅ In Stock ## Summary > 💧 Elevate your whole house water game with crystal-clear confidence! ## 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?** 660.30 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 - • **Universal 20-Inch Fit:** Seamlessly replaces any 20" x 4.5" carbon filter cartridge in heavy-duty housings. - • **Certified Peace of Mind:** NSF International tested & certified for trusted, safe water filtration. - • **Maximized Filter Longevity:** High porosity design prevents clogging, squeezing every drop of performance. - • **Massive 44,000 Gallon Capacity:** Year-long filtration power—replace only when water pressure or quality dips. - • **Unmatched Chlorine & Odor Defense:** Superior carbon block tech slashes chlorine taste & smell for fresher water. ## Overview The Pentair Pentek EP-20BB is a 20-inch whole house carbon block water filter 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 filtration capacity. NSF certified, this cartridge ensures reliable, long-lasting performance for residential and commercial water filtration needs. ## 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: Gets the job done - I get municipal drinking water with 1-2ppm of of chlorine (as much as a public pool) and 22 grains of hardness (more than 2x what's considered "extremely hard"). When I had a water softener installed in my house, I also had a Pentek 20" Big Blue Housing installed before softener. I wanted the carbon filter for a few reasons: 1) Keep chlorine out of the shower and bath, out of my family's lungs and off of our skin 2) Keep chlorine out of the washing machine where it bleaches our clothing 3) Protect the resin in the water softener, which should double it's life 4) Protect the plumbing (PEX pipes, rubber in fixtures, etc...) from chlorine 5) Remove the small amount of sediment that is in the city water which collects in valves and fixtures I previously used the Pentek RFC20-BB Radial-Flow Granular Activated Carbon Cartridge . In comparison, this filter is less expensive, has a finer sediment filter (5 micron vs. 25 micron) and it's rated for up to 180F. Also, carbon block filters don't have the same channeling issues as GAC filters, which become less effective at higher flow rates. However, compared to the RFC20-BB this filter can't handle as much water (only 40,000 Gal. vs. 70,000 Gal.) and has a bigger pressure drop (5.5 psi @ 5 gpm vs. 0.9 psi @ 4 gpm). Neither of those were a big concern for me. We use less than 1,000 gal/week so the capacity easily exceeds the 6 month replacement cycle. As for water pressure, I get a solid 60+ psi coming into my house and even a 10 psi drop is not noticeable. If you already have pressure issues, get RFC20 instead. ## 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 | |---------------|-------| | ASIN | B00310Y9KI | | Best Sellers Rank | #11,237 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #88 in Replacement Under-Sink Water Filters | | Brand | Pentek | | Brand Name | Pentek | | Customer Reviews | 4.7 out of 5 stars 1,065 Reviews | | EU Spare Part Availability Duration | 1 Years | | External Testing Certification | NSF, ANSI | | Global Trade Identification Number | 00051678583432 | | Item Dimensions D x W x H | 4.63"D x 4.63"W x 20"H | | Item Type Name | Everpure Full Flow Drinking Water System | | Item Weight | 5.7 Pounds | | Manufacturer | Pentair Industries | | Manufacturer Part Number | 155583-43 | | Material | Extruded Carbon Block | | Material Type | Extruded Carbon Block | | Model Number | EP-20BB | | Number of Items | 1 | | Product Benefits | Reduces Chlorine, Removes Odor | | Product Dimensions | 4.63"D x 4.63"W x 20"H | | Set Name | Whole House Water Filter Set | | UPC | 851905131050 700999877941 798527517490 132017513058 163121152147 163120790494 806294984510 115971047135 851905125257 851905125202 182682388031 809390003468 115971035729 051678583432 808112760696 807032972783 | | Unit Count | 1.0 Count | ## Product Details - **External Testing Certification:** NSF, ANSI - **Item Weight:** 5.7 Pounds - **Material:** Extruded Carbon Block - **Product Benefits:** Reduces Chlorine, Removes Odor - **Product Dimensions:** 4.63"D x 4.63"W x 20"H ## 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) ![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 2](https://m.media-amazon.com/images/I/81Nl6X4thyL.jpg) ![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 3](https://m.media-amazon.com/images/I/81cTYn-h3nL.jpg) ![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 4](https://m.media-amazon.com/images/I/61qZ6hYaZ4L.jpg) ![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 5](https://m.media-amazon.com/images/I/71ZZBSPbwML.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. ### ⭐⭐⭐⭐⭐ Gets the job done *by D***R on March 16, 2012* I get municipal drinking water with 1-2ppm of of chlorine (as much as a public pool) and 22 grains of hardness (more than 2x what's considered "extremely hard"). When I had a water softener installed in my house, I also had a Pentek 20" Big Blue Housing installed before softener. I wanted the carbon filter for a few reasons: 1) Keep chlorine out of the shower and bath, out of my family's lungs and off of our skin 2) Keep chlorine out of the washing machine where it bleaches our clothing 3) Protect the resin in the water softener, which should double it's life 4) Protect the plumbing (PEX pipes, rubber in fixtures, etc...) from chlorine 5) Remove the small amount of sediment that is in the city water which collects in valves and fixtures I previously used the Pentek RFC20-BB Radial-Flow Granular Activated Carbon Cartridge . In comparison, this filter is less expensive, has a finer sediment filter (5 micron vs. 25 micron) and it's rated for up to 180F. Also, carbon block filters don't have the same channeling issues as GAC filters, which become less effective at higher flow rates. However, compared to the RFC20-BB this filter can't handle as much water (only 40,000 Gal. vs. 70,000 Gal.) and has a bigger pressure drop (5.5 psi @ 5 gpm vs. 0.9 psi @ 4 gpm). Neither of those were a big concern for me. We use less than 1,000 gal/week so the capacity easily exceeds the 6 month replacement cycle. As for water pressure, I get a solid 60+ psi coming into my house and even a 10 psi drop is not noticeable. If you already have pressure issues, get RFC20 instead. ### ⭐⭐⭐⭐⭐ 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. ## Frequently Bought Together - 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 - Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) - Pentair Pentek DGD-5005-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 5 Micron, Pack of 1, White --- ## 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.tn/products/3678622-pentair-pentek-ep-20bb-big-blue-carbon-water-filter-20](https://www.desertcart.tn/products/3678622-pentair-pentek-ep-20bb-big-blue-carbon-water-filter-20) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-30*