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RO Sets
RO Sets keep reverse osmosis maintenance simple by bundling the parts you replace most often into one easy purchase. Instead of hunting for each cartridge and hoping sizes match, you can refresh your system with a set built to work together. Many options include common 4-stage and 5-stage combinations, plus membranes rated around 50, 75, or 100 GPD to fit different households. Choosing a set also helps you plan ahead, so clean water stays consistent between service dates.
Signs of wear often show up slowly, like reduced flow, off taste, or more frequent tank refills. A complete set lets you service everything in one session, which keeps stages balanced and makes replacement dates easier to track.
About RO Sets
Reverse osmosis systems rely on multiple stages to reduce sediment, chlorine taste, and other unwanted impurities before water reaches your faucet. RO replacement filter sets typically combine pre-filters like sediment and carbon with post-filters for polishing, and some kits include quick-connect fittings for faster swaps. Buying a set can save money compared to ordering items one by one, and it reduces the risk of missing a piece during a scheduled change. Options can support popular styles like drop-in cartridges or standard housings, so the right fit is easier to find.
Why Choose iFilters for RO Sets?
iFilters makes it straightforward to shop RO Sets by showing key details like kit stages, membrane capacity, and compatible connection types. Auto Ship is available on many items, which helps you keep a predictable replacement rhythm without last-minute orders. Broad availability across brands and Smart Pack-style kits gives you choices for routine refreshes or one-year replacement bundles. Helpful product ratings and sorting tools make it easier to compare best sellers and find a set that matches your existing reverse osmosis system. Fast shipping options help you get back to clean water without delays.
Shop RO Sets online today!
Sale
$39.99
$36.00
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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$39.99
$36.00
Sale
$47.99
$43.20
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
$43.20
Sale
$78.00
$70.20
OEM Replacement Water Filter Cartridge Set for Hydro Guard HDG-45-SET 4-Stage Drop-In Reverse Osmosis System Keep your water filtration system oper...
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$78.00
$70.20
Sale
$37.00
$33.30
4 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 50 GPD Membrane. For most standard 4 Stage RO system. Sediment, CTO Carbon Block, ...
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$37.00
$33.30
Sale
$139.99
$126.00
Hydro Guard HDGT-45 Reverse Osmosis 1-Year Filter Replacement Set – 50 GPD The Hydro Guard HDGT-45 Reverse Osmosis 1-Year Filter Replacement Set is...
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$139.99
$126.00
Sale
$41.15
$37.04
5 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 75 GPD Membrane. For any standard RO system. Sediment, UDF, CTO, Membrane and GAC ...
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$41.15
$37.04
Sale
$39.95
$35.96
5 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 75 GPD Membrane. For any standard RO system. Sediment, GAC, CTO, Membrane & GA...
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$39.95
$35.96
Sale
$23.75
$21.38
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
$21.38
Sale
$38.00
$34.20
5 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 50 GPD Membrane. For any standard 5 Stage RO system. Sediment, GAC, CTO Carbon Blo...
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$38.00
$34.20
Sale
$39.00
$35.10
5 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 50 GPD Membrane. For any standard 5 Stage RO system. Sediment, GAC, CTO Carbon Blo...
View full detailsSale
$39.00
$35.10
Sale
$49.99
$45.00
5 Stage NSF Reverse Osmosis RO Replacement Water Filter Set with 100 GPD Membrane. For any standard RO system. Sediment, UDF, CTO, Membrane & G...
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$49.99
$45.00
Sale
$19.50
$17.55
This High Quality 3 set SmartPack RO Reverse Osmosis Replacement filter cartridges (Pre-filters) are NSF Certified, measuring 2.5" x 10". These fil...
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$19.50
$17.55
Sale
$23.75
$21.38
4 pcs RO Reverse Osmosis pre filters. All filters are Premium NSF Certified. This set is used as a mid year replacement set (depending on water usa...
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$23.75
$21.38
Sale
$43.99
$39.60
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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$43.99
$39.60
Sale
$54.50
$49.05
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
$49.05
Sale
$37.16
$33.45
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...
View full detailsSale
$37.16
$33.45
Sale
$24.99
$22.50
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
$22.50
Sale
$74.99
$67.50
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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$74.99
$67.50
Sale
$35.94
$32.35
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
$32.35
Sale
$49.85
$44.87
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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$49.85
$44.87
Sale
$17.58
$15.83
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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$17.58
$15.83
Sale
$74.00
$66.60
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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$74.00
$66.60
Sale
$39.07
$35.17
3 Stage Aquarium Reverse Osmosis RO Replacement Water Filter Set with 100 GPD Membrane. For any standard compact Aquarium RO system with 1/4" tubin...
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$39.07
$35.17
Sale
$24.49
$22.05
OmniFilter ROR2000 RO Pre-Filter Cartridges reduce rust, sediment, and the taste and odor of Chlorine, leaving you with water that is as healthy as...
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$24.49
$22.05
