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Carbon Block Filters-NEW

Clean-tasting water starts with the right cartridge, and Carbon Block Filters are a go-to choice for homes and facilities that want reliable adsorption. Designed to reduce chlorine taste and odor while trapping fine particulates, these filters support better water at the tap, shower, and point of use. Options on this page cover common housings and system types, so matching a replacement is straightforward. Micron ratings range from sub-micron polishing levels up to higher-flow choices for heavier demand. Choose based on flow goals, housing size, and contaminants.

About Carbon Block Filters

Carbon block cartridges are formed from compressed activated carbon, which creates a dense media bed with consistent flow paths. Many selections use NSF-certified materials, which helps buyers choose with more confidence for everyday use. Sizing varies from slim 2.5-inch cartridges to big blue 4.5-inch formats, including popular 10-inch and 20-inch lengths. Micron choices can span about 0.5 to 100, supporting everything from taste improvement to sediment support in multi-stage setups. Whole house, commercial, and industrial applications can be covered by choosing the right diameter, length, and rating for your system and water conditions.

Why Choose iFilters for Carbon Block Filters?

iFilters makes shopping simple with clear product names, compatible sizes, and in-stock visibility, so you spend less time guessing and more time maintaining water quality. Auto Ship helps keep replacements on schedule, which can protect flow rate and filtration performance over time. Range matters too, since the catalog includes carbon block sets, single cartridges, and multi-pack options for higher-usage locations. Customer reviews on many listings add real-world context about fit, performance, and value. Fast shipping and helpful support round out a purchase experience built for both first-time buyers and pros.

Shop carbon block filters online today!

Filters

iFilters SG-GAC-SET (LWH-D Version 2) OEM Replacement Filter Set Sediment, Rust & CTO Filters - IFilters
SG-GAC-SET Variations
iFilters

iFilters SG-GAC-SET (LWH-D Version 2) OEM Replacement Filter Set Sediment, Rust & CTO Filters

SG-GAC-SET
in stock

$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99

iFilters SG-GAC-SET (LWH-D Version 2) OEM Replacement Filter Set – Sediment & Carbon GAC Upgrade your iFilters LWH-D Whole House Filtration Sys...

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$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99
(2 Pack) Genuine Hydro Guard HDG-CB6-14/2 - CB6 Carbon Block Water Filter For MP Systems
HDG-CB-6-14 Variations
Hydro Guard

(2 Pack) Genuine Hydro Guard HDG-CB6-14/2 - CB6 Carbon Block Water Filter For MP Systems

HDG-CB6-14/2
in stock

$64.99 - $64.99
$64.99
$64.99 - $64.99
$64.99

(2 Pack) Genuine Hydro Guard HDG-CB6-14 Carbon Block Water Filter – Compatible with MP Systems Only looking for 1 filter? Order here: HDG-CB6-14 Th...

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$64.99 - $64.99
$64.99
$64.99 - $64.99
$64.99
iFilters SG5-P1-SET (LWH-D) Replacement Filter Set - Whole House 2 Stage Sediment - Rust & CTO Filters - 2.5 x 10 - Interchangeable with AP117 & AP110 Filter Models - IFilters
SG-GAC-SET Variations
iFilters

iFilters SG5-P1-SET (LWH-D) Replacement Filter Set - Whole House 2 Stage Sediment - Rust & CTO Filters - 2.5 x 10 - Interchangeable with AP117 & AP110 Filter Models

SG5-P1-SET
in stock

$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99

iFilters SG5-P1-SET (LWH-D) Replacement Filter Set – Whole House 2-Stage Sediment & CTO Filtration Premium OEM Replacement Filters for Whole Ho...

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$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99
iFilters CBSM-2510 Coconut Shell CTO, Carbon Block Drinking Water Filter, 2.5 x 10, 0.5 Micron - IFilters
iFilters CBSM-2510 Coconut Shell CTO Carbon Block Drinking Water Filter – 2.5" x 10", 0.5 Micron
iFilters

iFilters CBSM-2510 Coconut Shell CTO, Carbon Block Drinking Water Filter, 2.5 x 10, 0.5 Micron

CBSM-2510
in stock

$19.99 - $19.99
$19.99
$19.99 - $19.99
$19.99

iFilters CBSM-2510 Coconut Shell CTO Carbon Block Drinking Water Filter – 2.5" x 10", 0.5 Micron High-Performance Filtration for Clean, Great-Tasti...

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$19.99 - $19.99
$19.99
$19.99 - $19.99
$19.99
PRO+AQUA

PRO+AQUA FC-PK-100E Whole House Heavy Metals Well Water Filter Replacement Set 3 Stage 20", 5 Micron

FC-PK-100E
in stock

$151.95 - $151.95
$151.95
$151.95 - $151.95
$151.95

PRO+AQUA FC-PK-100E Whole House Heavy Metals Well Water Filter Replacement Set – 3-Stage, 20", 5 Micron Upgrade your PRO+AQUA PRO-100-E Filtration ...

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$151.95 - $151.95
$151.95
$151.95 - $151.95
$151.95
iFilters Compatibles

iFilters Compatibles IF2-CB8 Replacement Water Filter – 0.5 Micron Carbon Block for Amway E-84, E-85, A101 & E-9225 2 Pack

IF-CB8-2PK
in stock

$75.99 - $75.99
$75.99
$75.99 - $75.99
$75.99

Upgrade your drinking water with the iFilters Compatibles QC2-CB8 2-Pack Carbon Block Water Filters, a premium replacement for Amway E-84, E-85, A1...

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$75.99 - $75.99
$75.99
$75.99 - $75.99
$75.99
PRO+AQUA

PRO+AQUA FC-PK19-100E Replacement Filter Set for PRO-100-E ELITE GEN2 System, Sediment, KDF/Blend, Carbon Infused

FC-PK19-100E
in stock

$0.00 - $0.00
$0.00
$151.95
$151.95 - $151.95
$151.95

PRO+AQUA ELITE GEN2 Three-Stage Replacement Filter Set for PRO-100-E GEN2 System Advanced Whole House Filtration for Superior Water Quality Designe...

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$0.00 - $0.00
$0.00
$151.95
$151.95 - $151.95
$151.95
iFilters Compatibles

iFilters Compatibles CB6 2-Pack 0.5-Micron Carbon Block Under-Sink Water Filter Replacement | Multipure Aquaversa Compatible – 2.5″ x 6.5″

IF-CB6-2PK
in stock

$57.00 - $57.00
$57.00
$57.00 - $57.00
$57.00

Deliver fresh, better-tasting water to your home with the iFilters Compatibles IF-CB6-2PK 2-Pack Carbon Block Replacement Filters, made for Multipu...

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$57.00 - $57.00
$57.00
$57.00 - $57.00
$57.00
iFilters SW-CB5-4520 Whole House Sediment & Carbon Block Water Filter Set – 5 Micron, 4.5" x 20"
iFilters

iFilters SW-CB5-4520 Whole House Sediment & Carbon Block Water Filter, 5 Micron 4.5"x20"

SW-CB5-4520
in stock

$59.99 - $59.99
$59.99
$59.99 - $59.99
$59.99

iFilters SW-CB5-4520 Whole House Sediment & Carbon Block Water Filter Set – 5 Micron, 4.5" x 20" Premium Dual-Stage Whole House Filtration for ...

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$59.99 - $59.99
$59.99
$59.99 - $59.99
$59.99
Sale Sale
iFilters Compatibles

iFilters Compatibles CB6 Compatible Carbon Block Water Filter Replacement – 0.5 Micron Under-Sink Cartridge for Multipure Aquaversa Systems

IF-CB6
in stock

$37.99
$37.99 - $37.99
$37.99
$34.99
$34.99 - $34.99
$34.99

Keep your drinking water clean, clear, and tasty with the iFilters Compatibles QC-CB6 Carbon Block Water Filter Replacement, designed for Multipure...

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$37.99
$37.99 - $37.99
$37.99
$34.99
$34.99 - $34.99
$34.99
Sale Sale
iFilters Compatibles

RP-3500 Replacement Water Filter, 1000 Gal, Compatible with Frescapure 3500 WF0451

RP-3500
in stock

$59.95 - $59.95
$59.95
$59.95 - $59.95
$59.95

iFilters RP-3500 is a 100% compatible alternative replacement to the WF0451 filter used in the RP 3500 water filtration systems. Made from certifie...

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$59.95 - $59.95
$59.95
$59.95 - $59.95
$59.95
Dual Stage Drinking Water Filter Replacement Set, filters VOC Mercury Lead
Dual Stage Drinking Water Filter Replacement Set, filters VOC Mercury Lead
Smart Pack

Smart Pack 0.5 & 5 Micron Carbon Block Under-Sink RO Replacement Set | GXSV10R Compatible – 2.5" x 10"

IF2-CB-2510-D
in stock

$29.99 - $29.99
$29.99
$29.99 - $29.99
$29.99

The Smart Pack Dual-Stage Under Sink Replacement Set includes two purpose-built filters designed to keep your water crisp, clean, and great-tasting...

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$29.99 - $29.99
$29.99
$29.99 - $29.99
$29.99
2 PK Carbon Block Drinking Water Filter Replacement for Lead Asbestos CTO
Hydronix

2 PK Carbon Block Drinking Water Filter Replacement for Lead Asbestos CTO

SMCB-2510/2
in stock

$23.00 - $23.00
$23.00
$23.00 - $23.00
$23.00

Hydronix SMCB-2510 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. SMCB-2520 filters have a particle re...

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$23.00 - $23.00
$23.00
$23.00 - $23.00
$23.00
iFilters GAC Carbon Water Filter Cartridge for LWHGAC V2, LWH-D V2 Systems - IFilters
iFilters

iFilters GAC Carbon Water Filter Cartridge for LWHGAC V2, LWH-D V2 Systems

GAC-2509
in stock
$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99

The GAC-2509 Premium Carbon GAC Water Filter is a Granular Activated Coconut Shell Carbon filter that Removes Chlorine, taste and Odor and has a Hi...

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$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99
SW-CB5-4510 Whole House Sediment & Carbon Block Water Filter, 5 Micron 4.5"x10" - IFilters
iFilters

SW-CB5-4510 Whole House Sediment & Carbon Block Water Filter, 5 Micron 4.5"x10"

SW-CB5-4510
in stock

$41.00 - $41.00
$41.00
$41.00 - $41.00
$41.00

  This dual filter set includes the SW5-4510 Sediment String-wound filter and CB5-4510 CTO carbon block whole-house filters. Suitable for whole-hou...

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$41.00 - $41.00
$41.00
$41.00 - $41.00
$41.00
(4 Pack) Hydronix CB-45-2005/4 CTO Whole House Coconut Shell Carbon Block Water Filters 20" x 4.5", 5 micron - IFilters
CB-45-2005 Variations
Hydronix

(4 Pack) Hydronix CB-45-2005/4 CTO Whole House Coconut Shell Carbon Block Water Filters 20" x 4.5", 5 micron

CB-45-2005/4
in stock

$135.95 - $135.95
$135.95
$135.95 - $135.95
$135.95

(4 Pack) Hydronix CB-45-2005/4 Whole House Carbon Block Water Filters – 20" x 4.5", 5 Micron High-Performance Filtration for Residential & Comm...

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$135.95 - $135.95
$135.95
$135.95 - $135.95
$135.95
Hydro Guard HDG-CB6-14 (CB6) Carbon Block Water Filter Replacement Cartridge NSF-certified
Hydro Guard HDG-CB6-14 (CB6) Carbon Block Water Filter Replacement Cartridge NSF-certified
Hydro Guard

Hydro Guard HDG-CB6-14 (CB6) Carbon Block Water Filter Replacement Cartridge NSF-certified

HDG-CB6-14
in stock

$35.99 - $35.99
$35.99
$35.99 - $35.99
$35.99

Hydro Guard HDG-CB6-14 Carbon Block Water Filter – CB6 Compatible Replacement Cartridge (NSF) The Hydro Guard HDG-CB6-14 Carbon Block Water Filter ...

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$35.99 - $35.99
$35.99
$35.99 - $35.99
$35.99
Hydronix CB-25-1005 Whole House RO Drinking Water Coconut Carbon Block Water Filter 5 m 2.5" x 10"
Hydronix CB-25-1005 Whole House RO Drinking Water Coconut Carbon Block Water Filter 5 m 2.5" x 10"
Hydronix

Hydronix CB-25-1005 Whole House RO Drinking Water Coconut Carbon Block Water Filter 5 m 2.5" x 10"

CB-25-1005
in stock
$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99

Hydronix CB-25-1005 Whole House RO Coconut Carbon Block Water Filter – 5 Micron, 2.5" x 10" Premium Carbon Block Filtration for Cleaner, Better-Tas...

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$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99
iFilters Compatibles

iFilters Compatibles Royal Prestige Replacement Filter – 0.5 Micron Coconut Shell Carbon Block Under-Sink Water Filter 2-Pack

RP-CB456505-2PK
in stock

$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99

Enjoy cleaner, better-tasting water with the iFilters Compatibles Royal Prestige Carbon Block Replacement Filter 2-Pack. Designed for FrescaPure 40...

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$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99
Drinking Water Replacement Filter Set for 3 stage Filtration Systems - IFilters
iFilters

Drinking Water Replacement Filter Set for 3 stage Filtration Systems

IFD-U3PK
in stock

$38.99 - $38.99
$38.99
$38.99 - $38.99
$38.99

The IFD-U3PK combines Sediment filtration with GAC and KDF to filter and reduce heavy metals as well as chlorine, taste, and odor found in city and...

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$38.99 - $38.99
$38.99
$38.99 - $38.99
$38.99
ICF/ISF Variations
Hydronix

RO Post Polishing Fridge Ice Inline Coconut GAC Water Filter, 2000 Gal, 1/4" NPT

ICF-10
in stock
$11.00 - $11.00
$11.00
$11.00 - $11.00
$11.00

Hydronix ICF-10 inline coconut shell carbon filters have 1/4" npt connections and are suitable for drinking water filtration applications. The coco...

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$11.00 - $11.00
$11.00
$11.00 - $11.00
$11.00
Smart Pack

Hydronix Compatible Culligan AC-30 AC-15 RO 3 Filter Replacement Set for Reverse Osmosis Drinking Water System, 12.5x5x1.9, White

RO-CUL-3
in stock
$23.75 - $23.75
$23.75
$23.75 - $23.75
$23.75

Reverse Osmosis (RO) Replacement water filters for AC-30 (AC30) and AC-15 (AC15) Reverse Osmosis (RO) Systems. Includes Sediment, Carbon Block and ...

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$23.75 - $23.75
$23.75
$23.75 - $23.75
$23.75
Hydronix 4 Pack CB-45-1005 Whole House, Hydroponics Carbon Block Water Filters CTO 4.5" x 10" - 5 micron - IFilters
Hydronix 4 Pack CB-45-1005 Whole House, Hydroponics Carbon Block Water Filters CTO 4.5" x 10" - 5 micron - IFilters
Hydronix

Hydronix 4 Pack CB-45-1005 Whole House, Hydroponics Carbon Block Water Filters CTO 4.5" x 10" - 5 micron

CB-45-1005/4
in stock

$67.95 - $67.95
$67.95
$67.95 - $67.95
$67.95

4 Pack Hydronix CB-45-1005 Coconut Shell Carbon Block water filter cartridge measures 4.5" x 10" standard. This filters offers a 5 micron nominal f...

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$67.95 - $67.95
$67.95
$67.95 - $67.95
$67.95
iFilters Compatibles

2 Pack RP-3500 Replacement Water Filter, Compatible with Frescapure 3500 WF0451

RP-3500-2PK
in stock
$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99

2 Pack iFilters RP-3500 is a 100% compatible alternative replacement for the WF0451 filter used in the RP 5300 water filtration systems. Made from ...

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$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99
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