Top 10 Best reverse osmosis water filter replacement in 2026

Last Updated - 6/20/2026

🏆Best Choice

APEC WATER

APEC ESSENCE Series 50 GPD Complete Replacement Filter For Undersink System(FILTER-MAX-ES50)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•APEC Water ESSENCE Series FILTER-MAX-ES50 is for ROES-50.
•1st stage 5 micron sediment filter to remove dust, particles and rust
•2nd and 3rd stage 10 micron extruded carbon block filter to remove chlorine, taste and odor
•4th stage high Rejection TFC reverse osmosis membrane removes a wide range of contaminants
•5th stage standard capacity coconut shell carbon filter removes any last residuals

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$74.95

$85.00

-12%

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iSpring

iSpring F3 NSF Certified 6-Month Prefilter Replacement Water Filter Cartridge Pack Set for Standard Reverse Osmosis RO Systems

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Individually wrapped 6-month high capacity prefilter replacement cartridge pack for most standard RO filtration systems
•Experience clean, safe, and good-tasting water every time you turn on the faucet
•3 pieces of 10" x 2. 5" replacement water filters included: 1x sediment filters, 1x granular activated carbon filters, and 1x carbon block filters.
•This filter pack does NOT include an RO membrane
•If you have trouble installing the filters, please refer to the user manual or contact us

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$17.43

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Brondell

Brondell RF-20 Water Filter Replacement for Circle, Sediment and Carbon Block, Under Sink Reverse Osmosis Filtration System, Lasts 6 Months

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•REPLACEMENT WATER FILTER: This sediment and carbon block filter replacement is specifically for the Brondell Circle Under Sink Water Filter (sold separately); It is designed for easy installation, providing great-tasting water for up to 6 Months
•AN EXTRA BOOST FROM CARBON: The carbon-based block filtration reduces cloudiness and helps trap unwanted components; Reverse osmosis membrane technology combines with 3-stage carbon filtration to filter water that’s not just safer, but tastier, too
•CLEAR BENEFITS: The sediment filter reduces rust, sand, and particulates; A carbon block pre-filter reduces VOCs, chlorine, and soluble contaminants; The carbon post-filter further reduces VOCs & lingering contaminants, along with chlorine taste & smell
•SIMPLE DIY INSTALLATION: The replacement filter can be installed in just a few minutes with a quick and easy twist and seal installation; The change indicator lets you know when a new filter is needed; Includes filter indicator replacement battery
•We design hygiene products that help protect our planet’s essential resources. From water-saving showers and air purifiers to bidets that help reduce toilet paper and energy use, we’re helping you live more sustainably and it feels better already.

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$79.99

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iSpring

iSpring F7-GAC NSF Certified 1-Year Replacement Filter Cartridge Pack, 7-Count for Standard 5-Stage Reverse Osmosis (RO) Systems

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•HIGH-CAPACITY REPLACEMENT FILTER PACK - Individually wrapped 1-year filter cartridge set designed for most standard 5-stage RO systems
•CLEAN, SAFE, GREAT-TASTING WATER - Enjoy pure, refreshing water straight from your faucet, with crystal-clear ice cubes, fresher tea and coffee, better-tasting food, and healthier baby formula—better than most bottled water
•COMPLETE 7-PIECE FILTER SET - Includes (2) sediment filters, (2) granular activated carbon (GAC) filters, (2) carbon block (CTO) filters, and (1) post-carbon filter for comprehensive filtration
•RO MEMBRANE NOT INCLUDED - This filter pack does not include a reverse osmosis membrane
•EASY & SECURE FILTER REPLACEMENT - The upgraded FT15 post-carbon filter features a push-fit quick connection for faster, hassle-free installation. For assistance, refer to the user manual or contact our support team

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$38.91

$45.99

-15%

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iSpring

iSpring Greatwell Reverse Osmosis Membrane 75 GPD 11.75” X 1.75”, Replacement Fits Standard Under Sink RO Drinking Water Filtration System, MC7

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Enjoy Your Water with Confidence: Our Reverse Osmosis membrane is able to remove up to 99% of over 1,000 contaminants from your water, including lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium and more.
•Top-notch Quality - Tested by independent third-party to meet NSF/ANSI Standards, our Reverse Osmosis Membrane is made of food-grade high capacity material that provides high packing density to remove contaminants. With the 0.0001 micron size, it only allows water molecules to squeeze through and virtually nothing else. TDS rejection rate up to 97% (under NSF58 testing condition).
•Standard Size - With 11.75" X 1.75" industry-standard size, our membrane fits most standard under sink RO membrane housings. It has the capability of producing 75 gallons of water per day, ensuring that families of nearly any size will have plenty of clean drinking water available on demand.
•Peace of Mind Customer Service - Register online to activate your manufacturer warranty and life-time free tech support. We stand behind our products and if you encounter any problems with any of our products please reach out to us immediately. We are happy to help!
•Please note - The membrane normally lasts about 2-3 years depending on your source water quality. If your water is very hard (Total Dissolved Solids level above 750 ppm), please contact us for customized solutions.

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$32.38

$36.99

-12%

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BLUERISE

BLUERISE 5 Micron 10" x 2.5" Water Filter Replacement Whole House Sediment Home Water Filter Replacement Cartridge Ro Sediment Filter Easy Installation Fits Any 10" Reverse Osmosis Unit - 6 Pack

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•【100% FRESH POLYPROPYLENE】- The 5 micron water filter is made of thermally bonded 100% pure food-grade polypropylene microfiber. Passed NSF 42 standard, sediment filter.
•【MULTI-lAYER DENSITY TECHNOLOGY】- Adopts a three-layer PP design with high density. The multi-layer dense technology can target impurities and effectively reduce 99% of particles and sediment.
•【HIGH-QUALITY MATERIALS】- Our sediment replacement water filter is carefully crafted with top-grade materials and adopts cutting-edge melt-blown technology. This not only ensures the highest safety standards for the water filter element. Therefore, there will be no fiber shedding. Let your family enjoy a safer and healthier life at all times.
•【USE TIME 3-6 MONTHS】- 10 x 2.5 inch water filter can filter 13000 gallons of water, depending on the water quality. If your water source is well water, this filter may not provide the filtration effect you expect. High-density filter types are more suitable for city water.
•【INDIVIDUAL PACKAGING】- Our sediment filters are individually plastic-sealed.
•【STANDARD UNIVERSAL SIZE】- 5 micron suspended solids filter. Universal water purifier replacement, suitable for any standard 10" X 2.5" RO unit filtration system.

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$17.99

$22.99

-22%

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SimPure

SimPure 5-Stage Reverse Osmosis Replacement Filter Set with 75 GPD RO Membrane, 5pc Pre & Post Replacement Cartridge Pack Kit for Standard 5-Stage Reverse Osmosis RO Systems

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Wide Compatibility: Compatible with most 10" standard under the counter reverse osmosis water systems, such as SimPure T1; APEC Water Systems RO-90, ROES-UV75, ROES-PH75 and most standard 5 or 6 stage RO systems. (Quick connect T fittings for systems with screw-in inline filter are also included).
•Sediment Water Filter: Works as the first barrier in the reverse osmosis system by removing solid particles like rust, sand, dirt and silt from the water and reducing a significant percentage of contaminants in the water. This prevents the other filters from getting clogged with fine particles and reduces the risk of damage to the other parts of the filtration system.
•Pre-Carbon Filter: 5 micron granular activated carbon and activated carbon block filters protect your system from chlorine damage and remove volatile organic chemicals. Improves the taste of the water and extends RO membrane's life.
•Reverse Osmosis Membrane: The 75 GPD RO Membrane is specially designed with density graded layers of filtration to filter the hardest to remove contaminants like dissolved solids, microplastics, fluoride, Heavy Metals, and more. It is tested by independent third-party to meet NSF/ANSI 58 standrad.
•Post-Carbon Water Filter: As the final stage of filtration in your system, this post activated carbon water filter built-in 1/4 inch (JG) quick connections in both two ends removes any remaining contaminants while enhancing the flavor of drinking water.
•Items with a new or old label randomly sent.

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$34.53

$43.17

-20%

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EXPRESS WATER

Express Water – 3 Year Reverse Osmosis System Replacement Filter Set – 23 Water Filters with 50 GPD RO Membrane, Carbon GAC, ACB, PAC Filters, Sediment SED Filters – 10 inch Size

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Reverse Osmosis Replacement Water Filters: Experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99.99% impurities.
•Water Purification System: Drink the healthiest water on Earth. All water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink.
•Reverse Osmosis Filter Replacement Set: Each Express Water replacement filter is specially designed to work together and compliment each other. Get the cleanest water and the best value in your filtration
•Reverse Osmosis Membrane: The RO Membrane is specially designed with density graded layers of filtration to filter the hardest to remove impurities like dissolved solids, microplastics, fluoride, Heavy Metals, and more.
•Pre-Carbon Filter: Activated Carbon Block and Granular Activated Carbon block water filters protect your system from chlorine damage and reduce VOCs.

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$109.99

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EXPRESS WATER

Express Water – 1 Year Alkaline Reverse Osmosis System Replacement Filter Set – 10 Filters with 50 GPD RO Membrane – 10 inch Size Water Filters

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Reverse Osmosis Replacement Water Filters: Experience what water should taste like with the Express Water reverse osmosis water filtration system removing up to 99.99% of impurities.
•Reverse Osmosis Filter Replacement Set: Each Express Water replacement filter is specially designed to work together and compliment each other. Get the cleanest water and the best value in your filtration
•Alkaline Filter: The Alkaline Mineralization filter uses a five-stage mineralization process to create the freshest, best-tasting drinking water the same way as the healthiest natural water sources on Earth.
•Reverse Osmosis Membrane: The RO Membrane is specially designed with density graded layers of filtration to filter the hardest to remove impurities like dissolved solids, microplastics, fluoride, Heavy Metals, and more.
•Pre-Carbon Filter: Activated Carbon Block and Granular Activated Carbon block water filters protect your system from chlorine damage and VOCs.

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$119.99

$149.99

-20%

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Watts Premier

Watts Premier Annual 7-Pack Standard Water Filter Replacement Kit for RO-TFM-5SV, WP-ST6DM, WP-5, WP5-50 Reverse Osmosis System, 2 Sediment Filters, 4 Carbon Pre-Filters, GAC Inline Post-Filter

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•ANNUAL FILTER REPLACEMENT KIT: Say goodbye to unpleasant tastes and odors with the Watts Premier Annual 7-Pack Standard Water Filter Replacement Kit, a one-year supply of 3 types of filters that are tailored for specific filtration purposes, collectively ensuring crystal clear, great-tasting drinking water every time.
•HIGHLY EFFECTIVE FILTRATION: This kit includes two 5-Micron Sediment Filters (WP104017) for reducing dirt, silt, and rust that affects the taste and appearance of your water; four 5-Micron Activated Carbon Pre-Filters (WP101009) for conditioning the water and reducing chlorine tastes and odors; one 10" GAC (Granular Activated Carbon) Inline Post-Filter (WP100014) for removing chemicals that give objectionable odors or tastes to water, such as hydrogen sulfide or chlorine.
•VERSATILE COMPATIBILITY: These filters are designed for specific use with Watts Premier's 5-stage (WP500032) and 6-stage (WP521934) Reverse Osmosis Systems but are also conveniently compatible with any standard 10" filter housing for under sink home filtration systems.
•QUALITY CONSTRUCTION: These durable filters are crafted from high-quality materials for maximum filtration, with the carbon filters constructed from NSF certified coconut shell activated carbon. Filter life may vary based upon local water conditions or use patterns, but we recommend replacing sediment and carbon pre-filters every 6 months and the GAC post-filter once a year.
•THE PREMIER DIFFERENCE: Since our founding in 1989, Premier has been dedicated to the design, development, and marketing of high-quality water filtration systems that exceed industry standards. Following our Watts Water Technologies in 2001, our audience and influence have only expanded, solidifying Watts Premier as a trusted leader in the industry.

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$27.99

$45.30

-38%

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