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RO Replacements

RO Replacements keep your reverse osmosis system working the way it should, with fresh cartridges and membranes that protect taste, clarity, and performance. Old filters can clog and slow flow, which can change flavor and put extra strain on your RO stages. Options range from sediment and carbon block cartridges to complete Smart Pack kits that bundle multiple stages in one purchase.

About RO Replacement Filters and Membranes

Reverse osmosis systems rely on a sequence of pre-filters plus an RO membrane to reduce dissolved solids and improve drinking water quality. Sediment filters catch grit and rust, while carbon stages help reduce chlorine and odors that can damage membranes and dull flavor. Popular choices include 10-inch standard cartridges, drop-in sets, and membranes sized for different production rates such as 50 GPD, 75 GPD, 100 GPD, and higher-output commercial formats.

Maintenance timing depends on usage and source water, so many owners follow a routine swap for pre-filters and a longer interval for the membrane. Warning signs include a drop in water pressure, slower tank refill, or taste changes that show up even after flushing. Matching the right parts starts with checking cartridge size, stage count, and membrane rating printed on your system labels.

Why Choose iFilters for RO Replacements products?

Selection matters because every RO system has its own sizing and stage layout, and iFilters stocks a wide range of compatible options for quick matches. Product pages help with in-stock status, ratings and reviews, and sorting tools so you can browse best sellers or narrow down what fits. Auto Ship keeps replacement timing consistent for households that want steady water quality without calendar reminders. Clear specs like micron ratings, cartridge dimensions, and kit contents help you choose confidently, whether you need one carbon block or a full replacement pack.

Shop RO Replacements online today!

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iFilters RO-50KIT Smart Pack Water Filters Reverse Osmosis Replacement Filter Set RO Cartridges 5 pcs w/ 50 GPD Membrane
iFilters RO-50KIT Smart Pack Water Filters Reverse Osmosis Replacement Filter Set RO Cartridges 5 pcs w/ 50 GPD Membrane
Smart Pack

iFilters RO-50KIT Smart Pack Water Filters Reverse Osmosis Replacement Filter Set RO Cartridges 5 pcs w/ 50 GPD Membrane

RO-50KIT
in stock

$37.60 - $37.60
$37.60
$37.60 - $37.60
$37.60

Hydronix Reverse Osmosis (RO) Replacement Filter Set – 5 Stage Kit (50 GPD Membrane, 5 Pcs) Compatible with Standard 5-Stage RO Systems The Hydroni...

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$37.60 - $37.60
$37.60
$37.60 - $37.60
$37.60
Auto Ship
iFilters Smart Pack Water Filters RO-100KIT Reverse Osmosis Replacement Filter Set RO Cartridges 5 pcs w/ 100 GPD Membrane
iFilters Smart Pack Water Filters RO-100KIT Reverse Osmosis Replacement Filter Set RO Cartridges 5 pcs w/ 100 GPD Membrane
Smart Pack

iFilters Smart Pack Water Filters RO-100KIT Reverse Osmosis Replacement Filter Set RO Cartridges 5 pcs w/ 100 GPD Membrane

RO-100KIT
in stock

$47.99 - $47.99
$47.99
$47.99 - $47.99
$47.99

iFilters Smart Pack RO-100KIT – 5-Stage Reverse Osmosis Replacement Filter Set (100 GPD Membrane) High-Performance 5-Stage RO Filtration for Superi...

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$47.99 - $47.99
$47.99
$47.99 - $47.99
$47.99
Auto Ship
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
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Whole House Coconut Shell Carbon GAC Water Filter 4.5 x 20 - IFilters
Hydronix

Whole House Coconut Shell Carbon GAC Water Filter 4.5 x 20

UDF-20BP
in stock

$30.95 - $30.95
$30.95
$30.95 - $30.95
$30.95

The Hydronix UDF-20BP granular activated carbon (GAC) cartridges are the best choice for your higher flow, taste, odder and chlorine reduction need...

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$30.95 - $30.95
$30.95
$30.95 - $30.95
$30.95
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Whole House String Wound Sediment Water Filter Cartridge 2.5" x 10" - 5 μm
Whole House String Wound Sediment Water Filter Cartridge 2.5" x 10" - 5 μm - IFilters
Hydronix

Whole House String Wound Sediment Water Filter Cartridge 2.5" x 10" - 5 μm

SWC-25-1005
in stock

$7.00 - $7.00
$7.00
$7.00 - $7.00
$7.00

Hydronix SWC-25-1005 polypropylene String wound filters have a particle retention Size of 5 micron and are used in a residential and commercial wat...

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$7.00 - $7.00
$7.00
$7.00 - $7.00
$7.00
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Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 75 GPD Membrane - IFilters
Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 75 GPD Membrane - IFilters
Smart Pack

Reverse Osmosis Replacement Filter Set RO Cartridges 4 stage w/ 75 GPD Membrane

RO-75KIT4
in stock

$37.16 - $37.16
$37.16
$37.16 - $37.16
$37.16

4 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 75 GPD Membrane. For any standard 4 Stage RO system. Sediment, CTO Carbon Block, M...

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$37.16 - $37.16
$37.16
$37.16 - $37.16
$37.16
Auto Ship
5 Stage RO Reverse Osmosis Water Filter Replacement NSF 14 filters 1-2 yr supply - IFilters
5 Stage RO Reverse Osmosis Water Filter Replacement NSF 14 filters 1-2 yr supply
Hydronix

5 Stage RO Reverse Osmosis Water Filter Replacement NSF 14 filters 1-2 yr supply

RO-14PK
in stock

$54.50 - $54.50
$54.50
$54.50 - $54.50
$54.50

1 - 2 Year (14 filters) supply of RO Reverse Osmosis Filters. All filters are Premium NSF Certified Hydronix. This universal set s compatible with ...

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$54.50 - $54.50
$54.50
$54.50 - $54.50
$54.50
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Pre & Post Reverse Osmosis Water Filter Replacement Set Fits GE FX12P GXRM10RBL - IFilters
Smart Pack

Smart Pack 1 & 5 Micron Carbon Block Under-Sink Replacement Set | Pre & Post RO Filters

IF2-CB1-DRO
in stock

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

The Smart Pack Pre & Post Carbon Block RO Replacement Set is built to keep your reverse osmosis system doing what it does best: providing clean...

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$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99
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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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Sediment Water Filter Polypropylene, 2.5" x 20", 0.5 Micron - IFilters
Hydronix

Sediment Water Filter Polypropylene, 2.5" x 20", 0.5 Micron

SDC-25-20-0.5
in stock

$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99

Hydronix SDC-25-20-0.5 polypropylene sediment filters have a particle retention Size of 0.5 Microns and is used in a residential and commercial wat...

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$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99
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Hydro Guard HDG-CB-AC10 Compatible with AC30 AC15 Systems Carbon Block Water Filter
Hydro Guard HDG-CB-AC10 Compatible with AC30 AC15 Systems Carbon Block Water Filter
Hydro Guard

Hydro Guard HDG-CB-AC10 Compatible with AC30 AC15 Systems Carbon Block Water Filter

HDG-CB-AC10
in stock

$7.95 - $7.95
$7.95
$7.95 - $7.95
$7.95

Hydro Guard HDG-CB-AC10 Carbon Block Water Filter – Compatible with Culligan AC30 & AC15 Systems The Hydro Guard HDG-CB-AC10 Carbon Block Water...

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$7.95 - $7.95
$7.95
$7.95 - $7.95
$7.95
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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
Auto Ship
Hydronix Inline Coconut Filter, 1000 Gal, 2"x6", 3/8" Quick Connect - IFilters
Hydronix

Hydronix Inline Coconut Filter, 1000 Gal, 2"x6", 3/8" Quick Connect

ICF-6Q38
in stock

$7.50 - $7.50
$7.50
$7.50 - $7.50
$7.50

Hydronix ICF Series Inline Filters utilize NSF listed coconut shell GAC and are designed to remove unpleasant taste and odor and reduce sediment to...

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$7.50 - $7.50
$7.50
$7.50 - $7.50
$7.50
Auto Ship
Hydro Guard HDG-CB-AC10 Carbon Block Pre-Filter for AC30 AC15 Systems - 2 Pack
Hydro Guard

Hydro Guard HDG-CB-AC10 Carbon Block Pre-Filter for AC30 AC15 Systems - 2 Pack

HDG-CB-AC10/2
in stock

$20.84 - $20.84
$20.84
$20.84 - $20.84
$20.84

Hydro Guard HDG-CB-AC10 Carbon Block Pre-Filter – 2-Pack for AC30 & AC15 Systems Upgrade your water filtration system with the Hydro Guard HDG-...

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$20.84 - $20.84
$20.84
$20.84 - $20.84
$20.84
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