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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!
Filters
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Smart Pack 1 & 5 Micron Carbon Block Under-Sink Replacement Set | Pre & Post RO Filters
Smart Pack 1 & 5 Micron Carbon Block Under-Sink Replacement Set | Pre & Post RO Filters
5.0 / 5.0
2 Reviews
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...
View full detailsHydronix SDC-25-2001 polypropylene sediment filters have a particle retention Size of 1 Micron and are used in residential and commercial water fil...
View full detailsThis 3/8" Quick Connect Hydronix ISF Series Inline Sediment Filters are designed to reduce sand, particles and sediment to produce cleaner, clearer...
View full detailsHydronix SDC-45-2001 polypropylene sediment filters have a particle retention Size of 1 Micron and is used in a residential and commercial water fi...
View full detailsWatts 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
5.0 / 5.0
2 Reviews
Your drinking water deserves precision filtration that you can trust. The Watts Premier Compatible 7-Pack 5-Stage RO Replacement Filter Kit provide...
View full detailsPro+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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DI, Reverse Osmosis, Whole House Sediment Water Filter 2.5" X 10", 5 μm, 20 Pack
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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4 PK - Coconut Shell CTO Carbon Block Water Filter for Whole house & RO 1 Micron
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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5 PK, Inline Post Reverse Osmosis Fridge Ice GAC Water Filter, 2000 Gal 1/4" NPT
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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5 PK Inline RO Fridge Ice Coconut Shell GAC Water Filter, 2000 Gal 1/4" QC Ports
This Hydronix ICF-10Q inline coconut filter has 1/4" quick-connect connections and is suitable for drinking water filtration applications. This NSF...
View full detailsThe 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...
View full detailsThe 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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Whole House Sediment Pleated Water Filter, Washable & Reusable, 2.5" x 20", 5 μm
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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Hydronix SDC-25-0501 (2 Pack) Sediment Water Filter Cartridge 2.5" x 5" 1 Micron
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...
View full detailsHydron HLE-4040 Commercial Reverse Osmosis Membrane elements produce 2800 gallons per day with 98.0% rejection. Designed for commercial use. The HL...
View full detailsHydronix 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 Compatible with AC30 AC15 Systems Carbon Block Water Filter
Hydro Guard HDG-CB-AC10 Compatible with AC30 AC15 Systems Carbon Block Water Filter
5.0 / 5.0
2 Reviews
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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3 PACK Reverse Osmosis Post Fridge GAC Carbon Inline Water Filters 1/4" QC Ports
This Hydronix ICF-10Q inline coconut filter has 1/4" quick-connect connections and is suitable for drinking water filtration applications. This NSF...
View full detailsHydronix 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...
View full detailsThe Omnifilter ROR2050 Replacement Filter Pack comes with an RS14 style inline filter cartridge. This Omnifilter replacement reverse osmosis kit in...
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5 Stage RO Reverse Osmosis Water Filter Replacements, 21 pcs NSF 3 - 4 yr supply
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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Whole House Sediment Pleated Water Filter, Washable & Reusable, 2.5" x 10", 5 μm
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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Reverse Osmosis Double Capacity Replacement Pre-Filter Set, Stage 1-3, Standard Size
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...
View full details(4 Pack) Hydronix HDG-SED-AC5/4 Culligan Compatible Sediment Water Filter For AC30 AC15 Systems
Hydro Guard HDG-SED-AC5/4 Sediment Water Filter – Culligan Compatible (4-Pack) for AC30 & AC15 Systems Ensure cleaner, clearer water with the H...
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