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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

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Softening Resin Filter Cation Ion Exchange 4.5" x 20" Big Blue Size - IFilters
iFilters

Softening Resin Filter Cation Ion Exchange 4.5" x 20" Big Blue Size

CAT-4520
in stock

$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99

The CAT-4520 softening cation resin filter is used for the reduction of hard water using an ion exchange process. The CAT-4520 water softening filt...

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$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99
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String Wound Water Filter Whole House Well Commercial BB Size 4.5" x 20" - 30 μm
Hydronix

String Wound Water Filter Whole House Well Commercial BB Size 4.5" x 20" - 30 μm

SWC-45-2030
in stock
$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00

The Hydronix SWC-45-2030 polypropylene String wound filters have a particle retention Size of 30 micron and are used in a residential and commercia...

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$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00
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String Wound Water Filter Whole House Well Commercial BB Size 4.5" x 20" - 50 μm
Hydronix

String Wound Water Filter Whole House Well Commercial BB Size 4.5" x 20" - 50 μm

SWC-45-2050
in stock
$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00

The Hydronix SWC-45-2050 polypropylene String wound filters have a particle retention Size of 50 micron and are used in a residential and commercia...

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$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00
Auto Ship
String Wound Water Filter Whole House Well Commercial BB Size 4.5" x 20", 20 μm
Hydronix

String Wound Water Filter Whole House Well Commercial BB Size 4.5" x 20", 20 μm

SWC-45-2020
in stock
$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00

The Hydronix SWC-45-2020 polypropylene String wound filters have a particle retention Size of 20 micron and are used in a residential and commercia...

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$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00
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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
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iFilters

SW5-4510 Whole House Sediment String Wound Water Filter Cartridge, 5 micron 4.5" x 10"

SW5-4510
in stock

$11.99 - $11.99
$11.99
$11.99 - $11.99
$11.99

The SW5-4510 Polypropylene String Wound Filters has a particle retention Size of 5 micron and are used in a residential and commercial water filtra...

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$11.99 - $11.99
$11.99
$11.99 - $11.99
$11.99
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SW5-4520 String Wound Sediment Water Filter Whole House or Commercial, 4.5 x 20, 5 Micron - IFilters
SW5-4520 String Wound Sediment Water Filter Whole House or Commercial, 4.5 x 20, 5 Micron - IFilters
iFilters

SW5-4520 String Wound Sediment Water Filter Whole House or Commercial, 4.5 x 20, 5 Micron

SW5-4520
in stock

$25.99 - $25.99
$25.99
$25.99 - $25.99
$25.99

The SW5-4520 Polypropylene String Wound Filters has a particle retention Size of 5 micron and are used in a residential and commercial water filt...

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$25.99 - $25.99
$25.99
$25.99 - $25.99
$25.99
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SWC-25-3001 NSF String Wound Sediment Water Filter Cartridge 2.5" x 30" - 1 μm
Hydronix

SWC-25-3001 NSF String Wound Sediment Water Filter Cartridge 2.5" x 30" - 1 μm

SWC-25-3001
in stock
$16.18 - $16.18
$16.18
$16.18 - $16.18
$16.18

The Hydronix SWC-25-3001 polypropylene String wound filters have a particle retention Size of 1 Micron and are used in a residential and commercial...

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$16.18 - $16.18
$16.18
$16.18 - $16.18
$16.18
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SWC-25-3005 String Wound Sediment Water Filter Cartridge 2.5" x 30" - 5 μm
Hydronix

SWC-25-3005 String Wound Sediment Water Filter Cartridge 2.5" x 30" - 5 μm

SWC-25-3005
in stock
$16.07 - $16.07
$16.07
$16.07 - $16.07
$16.07

The Hydronix SWC-25-3005 polypropylene String wound filters have a particle retention Size of 5 micron and are used in a residential and commercial...

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$16.07 - $16.07
$16.07
$16.07 - $16.07
$16.07
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SWC-25-3010 String Wound Sediment Water Filter Cartridge 2.5" x 30" - 10 μm
Hydronix

SWC-25-3010 String Wound Sediment Water Filter Cartridge 2.5" x 30" - 10 μm

SWC-25-3010
in stock
$16.18 - $16.18
$16.18
$16.18 - $16.18
$16.18

The Hydronix SWC-25-3010 polypropylene String wound filters have a particle retention Size of 10 micron and are used in a residential and commercia...

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$16.18 - $16.18
$16.18
$16.18 - $16.18
$16.18
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SWC-25-30100 NSF String Wound Sediment Water Filter Cartridge 2.5" x 30", 100 μm
Hydronix

SWC-25-30100 NSF String Wound Sediment Water Filter Cartridge 2.5" x 30", 100 μm

SWC-25-30100
in stock
$19.99 - $19.99
$19.99
$19.99 - $19.99
$19.99

The Hydronix SWC-25-30100 polypropylene String wound filters have a particle retention Size of 100 micron and are used in a residential and commerc...

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$19.99 - $19.99
$19.99
$19.99 - $19.99
$19.99
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TFM-75-CV Compatible Fit IF-TFM-75EB Reverse Osmosis Membrane - IFilters
iFilters

TFM-75-CV Compatible Fit IF-TFM-75EB Reverse Osmosis Membrane

IF-TFM-75EB
in stock

$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99

The IF-TFM-75EB is a compatible replacement for the Everpure TFM-75-CV, TFM-75EB Reverse Osmosis Membrane. Features a 1/4 inch Quick Connect fittin...

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$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99
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TW-1812-50 50 GPD Reverse Osmosis DI RO Membrane Replacement Filter, Fits Standard Systems - IFilters
TW-1812-50 50 GPD Reverse Osmosis DI RO Membrane Replacement Filter, Fits Standard Systems - IFilters
Hydron

TW-1812-50 50 GPD Reverse Osmosis DI RO Membrane Replacement Filter, Fits Standard Systems

TW-1812-50
in stock
$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00

Hydron TW-1812-50 – 50 GPD Reverse Osmosis Membrane for DI & RO Systems The Hydronix TW-1812-50 is a high-performance 50 GPD Reverse Osmosis me...

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$18.00 - $18.00
$18.00
$18.00 - $18.00
$18.00
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UDF-4520GACKDF2 4.5" x 20" Coconut GAC + 2LBS KDF - IFilters
Hydronix

UDF-4520GACKDF2 4.5" x 20" Coconut GAC + 2LBS KDF

UDF-4520GACKDF2
in stock
$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99

Hydronix Whole House UDF-4520GACKDF2 4.5" x 20" Coconut GAC + 2LBS KDF, Big Blue size cartridge. This filter is made from coconut shell GAC in comb...

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$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99
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Universal Fit Coconut Shell Activated Carbon Block Water Filter 1 μm 2.5" x 20"
Hydronix

Universal Fit Coconut Shell Activated Carbon Block Water Filter 1 μm 2.5" x 20"

CB-25-2001
in stock
$23.00 - $23.00
$23.00
$23.00 - $23.00
$23.00

Hydronix CB-25-2001 carbon block filters are NSF/ANSI standard 42 certified for Material and structural Safety. CB-25-2001 filters have a particle ...

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$23.00 - $23.00
$23.00
$23.00 - $23.00
$23.00
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Universal RO Drinking Water Systems Coconut Shell Carbon Block Filter 1 μm
Hydronix

Universal RO Drinking Water Systems Coconut Shell Carbon Block Filter 1 μm

CB-25-1001
in stock
$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99

The Hydronix CB-25-1001 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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$10.99 - $10.99
$10.99
$10.99 - $10.99
$10.99
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iFilters

Water Softener Resin High Quality Replacement Cation 100% Ion Exchange 0.25 CuFt

MED-CAT-025
in stock

$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99

0.25 Cubic Foot, perfect for portable water softeners needing resin media replacement. 100% compatible replacement for any water softener system us...

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$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99
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iFilters

Water Softener Resin Media High Quality Replacement Cation Ion Exchange 1/2 CuFt

MED-CAT-025/2
in stock

$74.99 - $74.99
$74.99
$74.99 - $74.99
$74.99

Half a Cubic Foot, perfect for portable water softeners needing resin media replacement. 100% compatible replacement for any water softener system ...

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$74.99 - $74.99
$74.99
$74.99 - $74.99
$74.99
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Watts 7-PK RO Filters Premier 500024 Compatible 1 year 5 Stage Replacements
iFilters

Watts Premier Compatible 7-Pack 5-Stage RO Replacement Filters – Sediment & Carbon Block Set, 10″ Cartridges, 1-Year Supply – Compatible with Standard Under-Sink Reverse Osmosis Systems

WATTS7
in stock

$35.94 - $35.94
$35.94
$35.94 - $35.94
$35.94

Your drinking water deserves precision filtration that you can trust. The Watts Premier Compatible 7-Pack 5-Stage RO Replacement Filter Kit provide...

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$35.94 - $35.94
$35.94
$35.94 - $35.94
$35.94
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Well Water Home String Wound Sediment Water Filter Cartridge 2.5" x 20" - 5 μm
Hydronix

Well Water Home String Wound Sediment Water Filter Cartridge 2.5" x 20" - 5 μm

SWC-25-2005
in stock
$12.59 - $12.59
$12.59
$12.59 - $12.59
$12.59

The Hydronix SWC-25-2005 polypropylene String wound filters have a particle retention Size of 5 micron and are used in a residential and commercial...

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$12.59 - $12.59
$12.59
$12.59 - $12.59
$12.59
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Well Water Whole House Sediment String Wound Water Filter 4.5" x 10" - 50 micron
Hydronix

Well Water Whole House Sediment String Wound Water Filter 4.5" x 10" - 50 micron

SWC-45-1050
in stock
$18.75 - $18.75
$18.75
$18.75 - $18.75
$18.75

The Hydronix SWC-45-1050 polypropylene String wound filters have a particle retention Size of 50 micron and are used in a residential and commercia...

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$18.75 - $18.75
$18.75
$18.75 - $18.75
$18.75
Auto Ship
Well Water, Home String Wound Sediment Water Filter Cartridge 2.5" x 20" - 10 μm
Hydronix

Well Water, Home String Wound Sediment Water Filter Cartridge 2.5" x 20" - 10 μm

SWC-25-2010
in stock
$12.66 - $12.66
$12.66
$12.66 - $12.66
$12.66

The Hydronix SWC-25-2010 polypropylene String wound filters have a particle retention Size of 10 micron and are used in a residential and commercia...

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$12.66 - $12.66
$12.66
$12.66 - $12.66
$12.66
Auto Ship
Well Water, Home String Wound Sediment Water Filter Cartridge 2.5" x 20" - 20 μm
Hydronix

Well Water, Home String Wound Sediment Water Filter Cartridge 2.5" x 20" - 20 μm

SWC-25-2020
in stock
$12.66 - $12.66
$12.66
$12.66 - $12.66
$12.66

The Hydronix SWC-25-2020 polypropylene String wound filters have a particle retention Size of 20 micron and are used in a residential and commercia...

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$12.66 - $12.66
$12.66
$12.66 - $12.66
$12.66
Auto Ship
Well Water, Home String Wound Sediment Water Filter Cartridge 2.5" x 20" - 30 μm
Hydronix

Well Water, Home String Wound Sediment Water Filter Cartridge 2.5" x 20" - 30 μm

SWC-25-2030
in stock
$12.66 - $12.66
$12.66
$12.66 - $12.66
$12.66

The Hydronix SWC-25-2030 polypropylene String wound filters have a particle retention Size of 30 micron and are used in a residential and commercia...

View full details
$12.66 - $12.66
$12.66
$12.66 - $12.66
$12.66
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