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Water Filter & Media Replacements

Clean water depends on timely filter changes. Water Filter & Media Replacements product options make it simple to stay on schedule without the stress of manual reordering. Automatic delivery keeps your system performing as designed while helping reduce buildup from sediment, chlorine, and other common contaminants. Every shipment arrives when you need it, so there is no interruption to your water supply. Pure water becomes part of your routine with zero hassle.

About Water Filter & Media Replacement Products

Our collection includes sediment cartridges, carbon block filters, reverse osmosis sets, and specialty media for whole-house and drinking water systems. Popular options fit standard sizes such as 2.5 by 10-inch and 4.5 by 20-inch housings. Replacement sets are available for multi-stage systems, including combinations that target rust, heavy metals, and chemical impurities. Genuine OEM and compatible alternatives allow flexibility without sacrificing performance. Each product listing includes compatibility details to simplify selection.

Subscription management is straightforward and flexible. Customers can adjust delivery frequency, update products, or pause shipments at any time. AutoShip offers savings on every order and an added discount on the first subscription purchase. This approach removes guesswork and supports steady filtration results.

Why Choose iFilters for Replacement Filter Products?

iFilters focuses on broad compatibility, dependable construction, and convenient service. In stock inventory supports fast fulfillment, and many products feature verified customer reviews. Subscription savings reward long-term maintenance habits while helping control costs. Clear product descriptions reduce confusion during ordering. Dedicated support is available to assist with selection questions.

Shop Water Filter & Media Replacement products online today!

Filters

Hydron - HSW-2521-PRO - Seawater Commercial Membrane 2.5" x 21" (800psi- 1200psi) 270GPD - IFilters Sale Sale
Hydron

Hydron - HSW-2521-PRO - Seawater Commercial Membrane 2.5" x 21" (800psi- 1200psi) 270GPD

HSW-2521-PRO
in stock
$269.00
$269.00 - $269.00
$269.00
$239.99
$239.99 - $239.99
$239.99

Hydron HSW-2521-PRO 2.5" x 21" Seawater RO Membrane – 270 GPD, 800-1200 PSI – Industrial Fiberglass Shell, ISO 9001 Certified High-Efficiency Seawa...

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$269.00
$269.00 - $269.00
$269.00
$239.99
$239.99 - $239.99
$239.99
Sale Sale
Hydron - HSW-2540-PRO - Seawater Commercial Membrane 2.5" x 40" (800psi- 1200psi) 600GPD - IFilters Sale Sale
Hydron

Hydron - HSW-2540-PRO - Seawater Commercial Membrane 2.5" x 40" (800psi- 1200psi) 600GPD

HSW-2540-PRO
in stock
$360.00
$360.00 - $360.00
$360.00
$295.71
$295.71 - $295.71
$295.71

Seawater Membranes - Hydron HSW-2540-PRO Commercial Seawater RO Membrane – 2.5" x 40" (800-1200 PSI) – Fiberglass Shell, High Performance, ISO 900...

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$360.00
$360.00 - $360.00
$360.00
$295.71
$295.71 - $295.71
$295.71
Sale Sale
Hydron - TW-2012-100 - Membrane
Hydron

Hydron - TW-2012-100 - Reverse Osmosis Membrane 100 GPD Reverse Osmosis DI RO Membrane Replacement Filter, Fits Standard Systems

TW-2012-100
in stock

$29.00 - $29.00
$29.00
$29.00 - $29.00
$29.00

The Hydron TW-2012-100 Reverse Osmosis membrane produces 100 gallons per day and is designed for home drinking water, DI systems, office and certai...

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$29.00 - $29.00
$29.00
$29.00 - $29.00
$29.00
Hydron BW-4040 Reverse Osmosis Membrane High Performance Commercial - 2400 GPD
Hydron BW-4040 Reverse Osmosis Membrane High Performance Commercial - 2400 GPD - IFilters
Hydron

Hydron BW-4040 Reverse Osmosis Membrane High Performance Commercial - 2400 GPD

BW-4040
in stock
$174.99 - $174.99
$174.99
$174.99 - $174.99
$174.99

Hydron BW-4040 Reverse Osmosis Membrane – High-Performance Commercial RO, 2400 GPD The Hydron BW-4040 Reverse Osmosis Membrane is a high-efficiency...

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$174.99 - $174.99
$174.99
$174.99 - $174.99
$174.99
Hydron HLP-4021 – 1000 GPD Light Commercial Reverse Osmosis Membrane
Hydron

Hydron HLP-4021 1000 GPD Reverse Osmosis Membrane Light Commercial, 4" x 21"

HLP-4021
in stock

$169.00 - $169.00
$169.00
$169.00 - $169.00
$169.00

Hydron HLP-4021 – 1000 GPD Light Commercial Reverse Osmosis Membrane High-Performance 4" x 21" RO Membrane for Light Commercial Applications The Hy...

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$169.00 - $169.00
$169.00
$169.00 - $169.00
$169.00
Hydron

HYDRON MEMBRANE 300GPD Reverse Osmosis (RO) Water Filter – SKU: TW-3012

TW-3012
in stock
$70.25 - $70.25
$70.25
$70.25 - $70.25
$70.25

Upgrade your water purification system with the HYDRON MEMBRANE 300GPD, a high-performance reverse osmosis (RO) membrane designed for efficient fil...

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$70.25 - $70.25
$70.25
$70.25 - $70.25
$70.25
Hydron

Hydron TW-1812-100D - 100 GPD Reverse Osmosis DI RO Membrane Replacement Filter, Fits Standard Systems

TW-1812-100D
$24.20 - $24.20
$24.20
$24.20 - $24.20
$24.20

Hydron TW-1812-100D – 100 GPD Reverse Osmosis (RO) DI Membrane Replacement Filter The Hydron TW-1812-100D is a 100-gallon-per-day (GPD) Reverse Osm...

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$24.20 - $24.20
$24.20
$24.20 - $24.20
$24.20
Hydron TW-1812-75 TFC DI Reverse Osmosis Membrane 75 GPD, Fits Standard RO Unit - IFilters
Hydron TW-1812-75 TFC DI Reverse Osmosis Membrane 75 GPD, Fits Standard RO Unit - IFilters
Hydron

Hydron TW-1812-75 TFC DI Reverse Osmosis Membrane 75 GPD, Fits Standard RO Unit

TW-1812-75D
in stock

$19.43 - $19.43
$19.43
$19.43 - $19.43
$19.43

The Hydron TW-1812-75 Reverse Osmosis membrane produces 75 gallon per day and is designed for home drinking water, DI systems, office and certain L...

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$19.43 - $19.43
$19.43
$19.43 - $19.43
$19.43
Hydronix UDF-10BP-ALK Alkaline pH Water Filter Cartridge 4.5" x 10"
Hydronix

HydronicUDF-10BP-ALK Alkaline pH Water Filter Cartridge 4.5" x 10"

UDF-10BP-ALK
in stock
$341.00 - $341.00
$341.00
$341.00 - $341.00
$341.00

Hydronix UDF-10BP-ALK Alkaline pH Water Filter Cartridge – 4.5" x 10" The Hydronix UDF-10BP-ALK Alkaline pH Water Filter Cartridge is designed to e...

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$341.00 - $341.00
$341.00
$341.00 - $341.00
$341.00
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 1 Micron Sediment Bonded Depth Filter 30" w/Silicone Oring & 222/Fin - IFilters
Hydronix

Hydronix 1 Micron Sediment Bonded Depth Filter 30" w/Silicone Oring & 222/Fin

SBC-25-3001-S5
in stock
$19.08 - $19.08
$19.08
$19.08 - $19.08
$19.08

This 1 Micron 2.5" x 30" Hydronix SBC Series Sediment Bonded Depth Cartridge with Silicone Oring & 222/Fin is a specially designed thermally bo...

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$19.08 - $19.08
$19.08
$19.08 - $19.08
$19.08
Hydronix 2 Pack CB-45-1005 Whole House, Hydroponics Carbon Block Water Filters CTO 4.5" x 10" - 5 micron - IFilters
Hydronix

Hydronix 2 Pack CB-45-1005 Whole House, Hydroponics Carbon Block Water Filters CTO 4.5" x 10" - 5 micron

CB-45-1005/2
in stock
$40.24 - $40.24
$40.24
$40.24 - $40.24
$40.24

2 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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$40.24 - $40.24
$40.24
$40.24 - $40.24
$40.24
Hydronix 2.5" x 10" CIC Plus Carbon / Sediment Filter 5 Micron - CIC-10PLUS - IFilters
Hydronix

Hydronix 2.5" x 10" CIC Plus Carbon / Sediment Filter 5 Micron - CIC-10PLUS

CIC-10PLUS
in stock
$10.52 - $10.52
$10.52
$10.52 - $10.52
$10.52

Hydronix 2.5 x 10 Inch CIC Plus Carbon Block Water Filter – 5 Micron for Sediment & Chlorine Reduction – CIC-10PLUS Replacement Filter Premium ...

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$10.52 - $10.52
$10.52
$10.52 - $10.52
$10.52
Hydronix 20" 2-Stage Filter Replacement Kit - Includes 5 micron Carbon Block & Sediment Filters
Hydronix

Hydronix 20" 2-Stage Filter Replacement Kit - Includes 5 micron Carbon Block & Sediment Filters

CB-SD5-4520
in stock
$49.47 - $49.47
$49.47
$49.47 - $49.47
$49.47

Replacement filter set for 2 stage 20" filter system. Includes the carbon block filter and sediment filter. Filters need be replaced at least once ...

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$49.47 - $49.47
$49.47
$49.47 - $49.47
$49.47
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
Hydronix CB-25-0505 NSF Coconut Activated Carbon Block Water Filter 5 μm 2.5 x 5
Hydronix

Hydronix CB-25-0505 NSF Coconut Activated Carbon Block Water Filter 5 μm 2.5 x 5

CB-25-0505
in stock

$6.90 - $6.90
$6.90
$6.90 - $6.90
$6.90

The Hydronix CB-25-0505 NSF Certified Carbon Block water filter is manufactured with high purity coconut shell carbon and is available in a wide ra...

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$6.90 - $6.90
$6.90
$6.90 - $6.90
$6.90
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
Hydronix CB-45-1005 Whole House Carbon Block Water Filter CTO 4.5" x 10" - 5 Micron - IFilters
CB-45-1005 Variations
Hydronix

Hydronix CB-45-1005 Whole House Carbon Block Water Filter CTO 4.5" x 10" - 5 Micron

CB-45-1005/8
in stock
$139.00 - $139.00
$139.00
$139.00 - $139.00
$139.00

8 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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$139.00 - $139.00
$139.00
$139.00 - $139.00
$139.00
Hydronix CB-45-2005 Whole House, Hydroponics, Commercial Carbon Block Water Filter 4.5" x 20" - 5 μm
Hydronix CB-45-2005 Whole House, Hydroponics, Commercial Carbon Block Water Filter 4.5" x 20" - 5 μm
Hydronix

Hydronix CB-45-2005 Whole House, Hydroponics, Commercial Carbon Block Water Filter 4.5" x 20" - 5 μm

CB-45-2005
in stock

$39.50 - $39.50
$39.50
$39.50 - $39.50
$39.50

Hydronix CB-45-2005 Whole House, Hydroponics, Commercial Carbon Block Water Filter – 4.5" x 20", 5 Micron Superior Water Filtration for Residential...

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$39.50 - $39.50
$39.50
$39.50 - $39.50
$39.50
Hydronix

Hydronix Clear Empty Standard Size Water Filter Cartridge Pre/Post Use 2.5 x 10

EC-2510C
in stock
$7.23 - $7.23
$7.23
$7.23 - $7.23
$7.23

Hydronix empty cartridges can be used with carbon, resin, KDF, or any other media. Made from high-impact polystyrene to withstand continuous use an...

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$7.23 - $7.23
$7.23
$7.23 - $7.23
$7.23
Hydronix Coconut Carbon Block Water Filter 4.5" x 20" - 0.5 Micron - SMCB-4520
Hydronix

Hydronix Coconut Carbon Block Water Filter 4.5" x 20" - 0.5 Micron - SMCB-4520

SMCB-4520
in stock

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

Hydronix SMCB-4520 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. SMCB-4520 filters have a particle re...

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$59.95 - $59.95
$59.95
$59.95 - $59.95
$59.95
Hydronix Aqua-Pure AP110-2 Compatible Whole House Water Filter – 5 Micron, 19.5"
Hydronix

Hydronix Compatible Aqua-Pure AP110-2 Whole House Water Filters

AP110-2
in stock
$15.67 - $15.67
$15.67
$15.67 - $15.67
$15.67

Hydronix Aqua-Pure AP110-2 Compatible Whole House Water Filter – 5 Micron, 19.5" The Aqua-Pure AP110-2 Compatible Whole House Water Filter Cartridg...

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$15.67 - $15.67
$15.67
$15.67 - $15.67
$15.67
Hydronix DI-4520C DI Deionization Resin TDS Reduction Cartridge 4.5"x20" - IFilters
Hydronix

Hydronix DI-4520C DI Deionization Resin TDS Reduction Cartridge 4.5"x20"

DI-4520C
in stock
$125.90 - $125.90
$125.90
$125.90 - $125.90
$125.90

Hydronix DI-4520C Deionization Resin TDS Reduction Cartridge – 4.5" x 20" The Hydronix DI-4520C Deionization (DI) Resin Cartridge is designed to re...

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$125.90 - $125.90
$125.90
$125.90 - $125.90
$125.90
Hydronix EC-4510W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 10
Hydronix

Hydronix EC-4510W White Empty Water Filter Cartridge Durable Construction For Pre Post, Fits Standard Housings 4.5 x 10

EC-4510W
in stock
$12.93 - $12.93
$12.93
$12.93 - $12.93
$12.93

Hydronix empty cartridges can be used with carbon, resin, KDF or any other media. Made from high impact polystyrene to withstand continuous usage a...

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$12.93 - $12.93
$12.93
$12.93 - $12.93
$12.93
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