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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!

Original price $24.99 - Original price $24.99
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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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Original price $24.99 - Original price $24.99
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Original price $8.37 - Original price $8.37
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Hydronix SDC-25-2001 polypropylene sediment filters have a particle retention Size of 1 Micron and are used in residential and commercial water fil...

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Original price $8.37 - Original price $8.37
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Original price $10.81 - Original price $10.81
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This 3/8" Quick Connect Hydronix ISF Series Inline Sediment Filters are designed to reduce sand, particles and sediment to produce cleaner, clearer...

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Original price $22.00 - Original price $22.00
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Hydronix SDC-45-2001 polypropylene sediment filters have a particle retention Size of 1 Micron and is used in a residential and commercial water fi...

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Original price $35.94 - Original price $35.94
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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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Original price $35.94 - Original price $35.94
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Original price $0.00 - Original price $0.00
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$74.99
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Pro+Aqua Complete Reverse Osmosis Yearly Replacement Filter Set. Includes 1 sediment filter (Stage 1), 2 triple capacity carbon block filters (Stag...

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Original price $0.00 - Original price $0.00
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$74.99
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Original price $70.00 - Original price $70.00
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This 20 pack of Hydronix SDC-25-1005 polypropylene sediment filter is a 5 micron rated filter. Its universal standard size fits any standard Revers...

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Original price $70.00 - Original price $70.00
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Original price $29.74 - Original price $29.74
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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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Original price $29.74 - Original price $29.74
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Original price $30.25 - Original price $30.25
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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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Original price $30.25 - Original price $30.25
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Original price $29.00 - Original price $29.00
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This Hydronix ICF-10Q inline coconut filter has 1/4" quick-connect connections and is suitable for drinking water filtration applications. This NSF...

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Original price $29.00 - Original price $29.00
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Original price $24.20 - Original price $24.20
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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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Original price $24.20 - Original price $24.20
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Original price $10.99 - Original price $10.99
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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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Original price $39.99 - Original price $39.99
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The RO Membrane (Aqua-Pure TFM50EM Compatible Fit) IF-TFM-50EM Replacement with Reusable Housing and Quick-Connect Fittings is a reverse osmosis me...

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Original price $39.99 - Original price $39.99
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Original price $13.37 - Original price $13.37
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Hydronix SPC series 2.5" x 20" 5 micron polyester pleated cartridges are manufactured from durable polyester to provide you with a superior pleated...

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Original price $13.37 - Original price $13.37
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Original price $11.00 - Original price $11.00
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The Hydronix SDC-25-0501 2 pack polypropylene sediment filter has a particle retention size of 1 Micron and is used in a small water filtration sys...

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Original price $11.00 - Original price $11.00
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Original price $280.00 - Original price $280.00
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Hydron HLE-4040 Commercial Reverse Osmosis Membrane elements produce 2800 gallons per day with 98.0% rejection. Designed for commercial use. The HL...

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Original price $280.00 - Original price $280.00
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Original price $7.31 - Original price $7.31
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Hydronix ICF-6 inline coconut shell carbon filters have 1/4" npt connections and are suitable for drinking water filtration applications. The cocon...

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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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This Hydronix ICF-10Q inline coconut filter has 1/4" quick-connect connections and is suitable for drinking water filtration applications. This NSF...

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Original price $19.99 - Original price $19.99
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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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Original price $17.58 - Original price $17.58
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The Omnifilter ROR2050 Replacement Filter Pack comes with an RS14 style inline filter cartridge. This Omnifilter replacement reverse osmosis kit in...

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Original price $17.58 - Original price $17.58
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Original price $74.00 - Original price $74.00
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3 - 4 Year (21 filters) supply of RO Reverse Osmosis Filters. All filters are Premium NSF Certified Hydronix. This universal set s compatible with ...

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Original price $74.00 - Original price $74.00
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Original price $9.00 - Original price $9.00
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Hydronix SPC series 2.5" x 10" 5 micron polyester pleated cartridges are manufactured from durable polyester to provide you with a superior pleated...

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Original price $9.00 - Original price $9.00
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Original price $49.85 - Original price $49.85
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Pro+Aqua Reverse Osmosis Replacement Pre-Filter Set. Includes 1 sediment filter (Stage 1) and 2 triple capacity carbon block filters (Stage 2-3). S...

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Original price $49.85 - Original price $49.85
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