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Pentair Pentek GAC-20BB Big Blue Granular Activated
20th Aug 2026, 11:41 AM

Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4

Price may vary by location, shipping cost, and availability.
$273.64

+ $66.16
Buy @ amazon.com
Highest: $280.10
Average: $261.69
Lowest: $233.61

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Based our analysis and observation, there is 47.20% chance that the price of Pentair Pentek GAC-20BB Big Blue Granular Activated... will increase. Price of product might fluctuate between 2% and 6% of current price.*

Price History Graph

Offer Price Prices
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Price History Information

You can check the price history of Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4 here. This product's current Price in USA is $273.64. The average and highest prices are $261.67 and $280.10 respectively. The current offer price of the product is $339.80.

Lowest Ever Price $233.61
27th Mar 2026
Average Price $261.69
Based on 197 days price tracking
Highest Price $280.10
17th Feb 2026

Price History of All Variants of Pentair Pentek GAC-20BB Big Blue Granular Activated...

Pentair Pentek GAC-BB Big Blue Granular Activated
Offer Price: $4,441.25

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Offer Price: $253.60

Pentair Pentek GAC-BB Big Blue Carbon Water Filter, 10-Inch, Whole House Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 10" x 4.5", Pack of 8

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Pentair Pentek GAC-10 1034 x 2.534 Carbon
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Pentair Pentek GAC-5 Carbon Water Filter 5-Inch
Offer Price: $34.72

Pentair Pentek GAC-5 Carbon Water Filter, 5-Inch, Under Sink Granular Activated Carbon (GAC) Replacement Cartridge, 5" x 2.5"

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Pentair Pentek GAC-20BB Big Blue Granular Activated
Offer Price: $339.80

Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20" x 4.5", Chlorine Taste Odor Reduction, NSF Certified, Pack of 4

Get Deal

Pentair Pentek GAC-10 Carbon Water Filter Cartridge
Offer Price: $22.17

Pentair Pentek GAC-10 Carbon Water Filter Cartridge, 10 inch Granular Activated Carbon for Chlorine Taste and Odor Reduction, 2.88" x 9.75" Drinking Water

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Pentair Pentek GAC-20BB Big Blue Carbon Water
Offer Price: $87.17

Pentair Pentek GAC-20BB Big Blue Carbon Water Filter, 20-Inch, Heavy Duty Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 4.5"

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Pentair Pentek GAC-BB Big Blue Whole House
Offer Price: $66.49

Pentair Pentek GAC-BB Big Blue Whole House Carbon Water Filter | Granular Activated Carbon Reduces Chlorine Taste and Odor; Post-Filter Cuts Carbon Fines; 10" x 4.5", Pack of 2

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Pentair Pentek GAC-20 Carbon Water Filter 20-Inch
Offer Price: $37.86

Pentair Pentek GAC-20 Carbon Water Filter, 20-Inch, Whole House Granular Activated Carbon (GAC) Replacement Cartridge, 20" x 2.5", White

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Pentair Pentek GAC-10 1034 x 2.534 Carbon

Pentair Pentek GAC-10 10" x 2.5" Carbon Water Filter, Pack of 12

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Current Price in USA

Price $273.64

Recent Price Drops on Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4

Price Drop 13th Jun 2026
$265.97 → $243.78
8.34% drop
Price Drop 26th Mar 2026
$246.24 → $233.61
5.13% drop
Price Drop 5th Mar 2026
$280.06 → $248.78
11.17% drop

Product Information

Details

Product Name Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4
Store Product Code B0BMFGX9JR
Store Name amazon.com
Rating 9.2 / 10
Category Replacement Under-Sink Water Filters
Product Manufacturer Pentair
Model Number GAC-20BB
Model Number GAC-20BB
Color Blue
Size Pack of 4
Dimensions 4.5"D x 4.5"W x 20"H

Features

  • CLEANER, BETTER-TASTING WATER - Granular activated carbon effectively reduces chlorine, unwanted taste, and odor for improved water quality throughout your home or facility
  • MINIMIZED CHANNELING AND CARBON FINES - Internal polypropylene expansion pad prevents water from bypassing the carbon bed, while a spun polypropylene post-filter traps loose fines
  • NSF/ANSI STANDARD 42 CERTIFIED - Tested and certified by NSF International for material requirements, giving you confidence in the safety and quality of every cartridge
  • FITS 20" PENTAIR PENTEK BIG BLUE HOUSINGS - Designed as a direct drop-in replacement cartridge (4.50" x 20") for Big Blue filter systems; operates at 40-125 degrees F
  • 25,000-GALLON CHLORINE REDUCTION CAPACITY - Extended filter life at 4 gpm flow rate; this convenient 4-pack keeps your system running with fewer reorder interruptions

Images

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Image of Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4
Image of Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4
Image of Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4
Image of Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4
Image of Pentair Pentek GAC-20BB Big Blue Granular Activated Carbon Water Filter, 20 inch x 4.5 inch, Chlorine Taste Odor Reduction, NSF Certified, Pack of 4

Rating and Reviews

9.2 Based on 1313 reviews

Pentair Pentek GAC-20BB Big Blue Granular Activated has 9.2 rating out of 10. This average rating is consist of 1313 individual ratings. You can rate this product at product review page.

* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.
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