Top 9 Reverse Osmosis Filter – Replacement Under-Sink Water Filters

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1. APEC Water Systems


APEC Water Systems FILTER-MAX-ES50 50 GPD High Capacity Complete Replacement Filter Set For Essence Series Reverse Osmosis Water Filter System Stage 1-5

APEC Water Systems #ad - Apec roes-50 complete replacement filter set, compatible with most 10" standard under the counter reverse osmosis water systems. 4th stage high rejection tfc reverse osmosis membrane removes a wide range of contaminants. 1st stage 5 micron sediment filter to remove dust, particles and rust. 5th stage standard capacity coconut shell carbon filter removes any last residuals. 2nd and 3rd stage 10 micron extruded carbon block filter to remove chlorine, taste and odor.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height6 Inches
Length12 Inches
Width10 Inches
Part NumberFILTER-MAX-ES50

2. iSpring


NSF Certified, iSpring RCC7AK, White, 6-Stage Superb Taste High Capacity Under Sink Reverse Osmosis Drinking Water Filter System with Alkaline Remineralization-Natural pH

iSpring #ad - The end result is great-tasting bottled-water quality. Ultra fine ro filter to remove contaminants down to 0 For leak-free installation, well-organized written instructions, simply push tubing ½ inch deep into quick-fitting connectors and lock; no threading pipes needed. 1 rated reverse osmosis systems in the usa backed by ispring extended manufacturer upon registration and lifetime personalized support from GA, USA, combined with premium quality components, this water filter is to deliver endless bottled quality drinking water right in your home for many years to come, eliminating plastic bottles.

The entire alkaline water filter fits nicely under a standard kitchen sink. 0001 microns; fine gac filter to provide final polishing to the purified water and AK filter to finally restore just the right proportion of healthy minerals and a natural alkaline balance. 0 or below. Transparent 1st stage housing for easy visual inspection. Certified to nsf/ansi 58, 000 harmful contaminants like chlorine, 6-stage alkaline remineralization layered Filtration: Exclusively designed to restore the natural alkalinity and mineral balance of water; this reliable and ultra-safe Reverse Osmosis RO water filtration system converts your water into clean, pure and healthy drinking water by removing up to 99% of over 1, fluoride, arsenic, calcium, asbestos, lead removes up to 98%, sodium and more.

Benefits: the ispring rcc7ak water softener includes an additional sixth stage - an alkaline remineralization filter which restores healthy minerals and produces a balanced alkalinity, which gives your water a more natural taste than regular 5 stage RO water filter; the RO membrane removes not only harmful pollutants but also a few helpful minerals. Features: beautiful european-style kitchen faucet. Three extra long life pre-filters to remove large contaminants and protect RO membrane.
BrandiSpring #ad
ManufactureriSpring #ad
Height18 Inches
Length15 Inches
Width8 Inches
Part NumberRCC7AK

3. Waterdrop


Model: WD-G2-B, Tankless, Black, USA Tech Support, TDS Reduction, Waterdrop RO Reverse Osmosis Water Filtration System, FCC Listed, 400 GPD Fast Flow, 1:1 Drain Ratio

Waterdrop #ad - The tankless design ensures the safety of your family’s drinking water. Every drop of water you drink will be fresh. The cf filter has a sediment PP membrane and an activated carbon block. Best value for your family: waterdrop g2 under-sink reverse osmosis water filtration System. Efficient purified water without waiting: through the combination of an internal pump and efficient filters, this RO system offers a fast water flow rate of up to 400 GPD.

Advanced composite filters: the composite integrated filters result in more effective filtration. Integrated product design: the advanced integrated design of the electrical and water circuits reduces leakage. Compared to the ordinary ro system, which has continuous water flow during the first two minutes, the Waterdrop RO system always has a stable water flow. Get a cup of filtered water in about 12 seconds, satisfying your needs while saving time.

The airtight housing reduces noise, while the process of installing and replacing the filter is faster and more convenient than with other filters. The innovative tankless design saves space and ensures faster water flow and purer water. It reduces most contaminants, scale, fluoride, rust, chlorine, large particles, colloids, a large reverse osmosis membrane, etc. It reduces sediment, and an activated carbon block. Innovative tankless design: the new filter composition technology employs an excellent filter combination to more efficiently filter out impurities.
BrandWaterdrop #ad
ManufacturerWATERDROP #ad
Height13.9 Inches
Length17.32 Inches
Weight20.94 Pounds
Width5.91 Inches
Part NumberWD-G2-B
WarrantyPlease note: Most RO systems do NOT recommend using well water as a source. Large particles in well water will clog the filters easily and shorten filter life. Additionally, well water may not reach the feed water pressure. If you have to use well water, we recommend to add a pre-filtration system.

4. Express Water


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

Express Water #ad - Pre-carbon filter: activated carbon Block and Granular Activated Carbon block water filters protect your system from chlorine damage and remove volatile organic chemicals. Reverse osmosis filter replacement set: each Express Water replacement filter is specially designed to work together and compliment each other.

All water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink. Fully ¼” quick connect compatible. On demand support: support from experts who can answer any of your questions about your replacement water filters. Replacement water filter life cycle: replace sediment filter, Granular Activated Carbon, Activated Carbon Block every 6 Months. Reverse osmosis membrane: the ro membrane is specially designed with density graded layers of filtration to filter the hardest to remove contaminants like dissolved solids, microplastics, Heavy Metals, fluoride, and more.

Replace reverse osmosis Membrane and Post Activate Carbon once a year. Water purification system: drink the healthiest water on Earth. Get the cleanest water and the best value in your filtration. 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% contaminants. Post-carbon water filter: as the final stage of filtration in your system, this activated carbon water filter removes any remaining contaminants while enhancing the flavor of drinking water.
BrandExpress Water #ad
ManufacturerExpress Water Incorporated #ad
Part NumberFLTSETS6C6G6I3M502



FS-TFC 5-Stage Reverse Osmosis Water Filtration System 100GPD Fast Flow Plus Extra 4 Filter for Free FS-RO-100G-A

FS-TFC #ad - Enjoy crystal clear ice cubes, as well as toxic fluoride, healthier baby formula – even better than most bottled water. Supreme quality - designed, arsenic, taste, nitrates, odor, and assembled to guarantee water safety & your health. Remove rate up to 99. 999%,including chlorine, safe, heavy metals and 1000+ contaminants.

Experience clean, lead, better tasting foods, fresher tea and coffee, VOCs, good-tasting water every time you turn on the faucet. Quick and easy-to-understand design means you can install and understand everything about your new water filtration system. If you ever run into any problems with any of our products simply contact us and we will work to make it right. If you don't love your fs-tfc water Filter, simply return it and we will refund 100% of your purchase. Don’t need waste money on professional installation. Mini size -high flow designed :developed for household and commercial use, rv, means you can get 1 cup 200ml of pure, bathroom, or office .

The tested full flow rate is 18l per hour at 60 Psi, This Water Filtration System can be installed in your kitchen, fresh and great tasting water in 5 seconds. Completely satisfied with your daily water needs. Money-saving:the reverse osmosis system works without electricity and 1: 1 low drain ratio, by spending only $50 per year 13 cents per day for the filter replacement, thereby reducing the amount that you spend on electricity and water. On average, you and your family can enjoy safe and clean water.
BrandFS-TFC #ad
ManufacturerFS-TFC Water Systems #ad
Height11.5 Inches
Length11.5 Inches
Width5 Inches
Part NumberFS-RO-100G-A
Warranty3 Year



RO Reverse Osmosis Water Filtration System, TDS Reduction, Faucet Included, 1.5:1 Drain Ratio, 600 GPD, Under Sink Tankless Purifier

OASIS OSMOSIS HOME #ad - The 30 mins installation & 3 seconds filter change can be seen in the How to Video and in the downloadable Instruction Manual. Contact us with any issues you might have. Let us be your home-oasis - with our innovative technology RO system and high-quality stainless-steel faucet, we aim to provide you with only the best in home solutions and top of the line customer support services.

More space under your sink - the innovative tankless design eliminates the risk of secondary pollution and saves up to 70% storage space under your sink. The integrated filter design ensures high purity filtration and a softened, perfect to drink water. Enjoy a filtered cup of water in merely 12 seconds while saving money! The best multilayer composite filtration - the 3 in 2 filters offer a smart filtration system for better, purer water at a lower cost.

Pure water straight from the sink - With a filtration accuracy of 00001um, this system efficiently removes contaminants like fluoride, limescale, heavy metals. Stop throwing money down the drain - with a 1. 5:1 low drain rate and a high water flow rate of 600 GPD, our fast filtering RO system is 34% more efficient than the traditional ones.
ManufacturerOASIS OSMOSIS HOME #ad

7. Membrane Solutions


Membrane Solutions 75 GPD Complete Replacement Filter Set For Under Sink 5-Stage Reverse Osmosis Replacement Water Filter System, Reverse Osmosis Filter Replacement

Membrane Solutions #ad - Standard universal filter: universal 10 inch cartridge. High adsorption capacity:filtration rating of 5 micron, showering, 75 GPD 5 Stage water filter replacement cartridges can effectively remove 99% of contaminants. Which provides safer, cooking, healthier water whether for drinking, garden, aquarium, etc.

Food-grade materials give your more safe water. 100% safe filter: our high capacity filter replacement cartridge with NSF42 Certified and ISO9001:2015 certificated ensure your drinking water safe. Fits most standard under-sink 5 or 6 stage reverse osmosis water filter system, Watts, compatible with Express Water, iSpring, PuROLine, Watts, Global Water, Flowmatic, APEC, Premier, Crystal Quest, Puromax etc.

Packing list: high capacity water filter set included 5 pieces of cartridge: 1x sediment filters, 1x granular activated carbon filters, 1x 75 gpd RO membrane, 1x carbon block filters, and 1x inline carbon filter. Easy installation: inline carbon filter built-in 1/4 inch JG quick connections in both two ends of the filter. Individually wrapped and Drop-in cartridge design allows for quick and easy filter change.
BrandMembrane Solutions #ad
ManufacturerMembrane Solutions Corp #ad

8. General Electric


8.50 x 2.00 x 2.00 inches, GE Profile FQROPF Reverse Osmosis Replacement Filter Set, White

General Electric #ad - Six-month filter life: Filter should be replaced every six months for best filtration results. Twist and lock design: Simple design provides easy, tool-free, no-mess filter replacement. Includes two filters: filters fit pxrq15f, pnrq20F, pnrq15f, PNRQ20R and PNRQ21R reverse osmosis filtration systems. Premium filtration: certified to reduce lead, arsenic, select chemicals, and 12 other contaminants. Reverse osmosis filtration: Water is filtered three times.
BrandGeneral Electric #ad
ManufacturerGeneral Electric Co #ad
Height8.5 Inches
Length2 Inches
Weight1.2 Pounds
Width2 Inches
Part NumberFQROPF

9. Express Water


14 x 15 x 5, Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Replacement Filters – 50 GPD

Express Water #ad - Love your water - environmentally friendly coconut carbon filters give unequalled quality and a clear natural taste. Under sink water filter: don’t waste money on professional installation. Try additional filtration attachments including UV Water Filter, Deionization Water Filter, Alkaline Water Filter, and more. Quality guaranteed: rest easy with our 1-year warranty on all Express Water Reverse Osmosis Water Systems.

Water purification system: drink the healthiest water on Earth. Reverse osmosis water filter: experience what water should taste like with the Express Water reverse osmosis water filtration system removing up to 99. 99% of lead, fluoride, arsenic, Nitrates, Bacteria, Chlorine, Calcium, and more. Leak detection: each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture. On demand support: support from experts who can answer any of your questions about your new water filter.

Under sink water filter system: no need to mess with refilling or activating your water filter, Express Water’s water filtration systems automatically fill your water tank with high quality drinking water. Express water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system. Customizable ro water filter system: express water home water filtration systems are fully upgradable and customizable with quick connecting fittings. All our water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink.
BrandExpress Water #ad
ManufacturerExpress Water #ad
Height18.06 Inches
Length16.18 Inches
Width18.75 Inches
Part NumberRO5DX