Top 10 Reverse Osmosis Filter Replacement 3 Stage – Replacement Under-Sink Water Filters

As an Amazon Associate I earn from qualifying purchases.

1. APEC Water Systems

#ad

APEC Water Systems FILTER-SET-ES High Capacity Replacement Pre-Filter Set For Essence Series Reverse Osmosis Water Filter System Stage 1-3

#ad
APEC Water Systems #ad - High performance replacement filters are compatible with all standard sized under counter RO systems. Includes 1 sediment and 2 carbon block filters to protect and extend the life of the RO system. Apec water essence series filter-set-es is for roes-50, roes-phuv75, roes-ph75, roes-uv75-SS and ROES-UV75.2nd & 3rd stage 10 micron extruded carbon block filters to remove chlorine, taste & odor. 1st stage 5 micron Polypropylene sediment filter to remove dust, particles and rust.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height10 Inches
Length2.5 Inches
Weight2 Pounds
Width7.5 Inches
Part NumberFILTER-SET-ES
ModelFILTER-SET-ES

2. APEC Water Systems

#ad

APEC Water Systems FILTER-SET-ESX2 2 Sets of High Capacity Replacement Pre-Filter Sets For Essence Series Reverse Osmosis Water Filter System Stage 1-3,White

#ad
APEC Water Systems #ad - High capacity 10 inch replacement filters for reverse osmosis systems. Compatible with apec roes-50, roes-uv75, roes-75, roes-ph75, roes-phuv75, roes-uv75-ss and all other standard size under counter reverse osmosis systems on the market.1st stage polypropylene sediment filter to remove dust, particles, and rust. Includes 2 sediment and 4 Carbon block filters to protect and extend the life of the RO system. 2nd & 3rd stage extruded carbon block filters to remove chlorine, taste & odor.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height10 Inches
Length8.25 Inches
Weight4.5 Pounds
Width5.5 Inches
Part NumberFILTER-SET-ESX2
ModelFILTER-SET-ESX2

3. iSpring

#ad

ISpring F7-GAC for Standard 5-Stage Reverse Osmosis RO Systems 1-Year Replacement Supply Filter Cartridge Pack Set, 7 Count Pack of 1

#ad
iSpring #ad - Updated ft15 post-carbon filters are built with a secure push-fit quick connection, which allows faster filter replacement. Individually wrapped 1-year high capacity filter replacement cartridge pack for most standard 5-stage RO systems.

This filter pack does NOT include an RO membrane. 7 pieces of 10" x 2. Enjoy crystal clear ice cubes, better tasting foods, healthier baby formula – even better than most bottled water. Experience clean, safe, fresher tea and coffee, and good-tasting water every time you turn on the faucet. If you have trouble installing the filters, please refer to the user manual or contact us. 5" replacement water filters included: 2x sediment filters, 2x granular activated carbon filters, 2x carbon block filters, and 1x post-carbon filter.
BrandiSpring #ad
ManufactureriSpring #ad
Height10 Inches
Length2.5 Inches
Weight1 Pounds
Width2.5 Inches
Part NumberF7RO
ModelF7RO

4. Pure Blue

#ad

Pure Blue 3-Stage 1:1 Reverse Osmosis Three-Pack Replacement Filters

#ad
Pure Blue #ad - Affordable, reverse osmosis filters and other water treatment systems, filter and restore water to a pure, that clean, Clean Water Solutions: Pure Blue makes water filtration systems, uncontaminated state.

This annual pack contains two Stage 1 Pre-Carbon Block Filters and one Stage 3 Post-Carbon Filter. Pure blue: we make premium water filtration systems, under the sink filters, including faucet filters, shower filters and more, whole house filters, so you can provide clean water for your whole family. Enjoy better water at home: this water filtration system is certified to NSF/ANSI standards 58 and 372, helping reduce Lead, Fluoride R and more.
BrandPure Blue #ad
ManufacturerPure Blue H2O #ad
Part NumberPB-TLRO3RCT-3PK

5. APEC Water Systems

#ad

White, Standard , APEC Water Systems Filter-Set US Made Double Capacity Replacement Stage 1-3 for Ultimate Series Reverse Osmosis System

#ad
APEC Water Systems #ad - Compatible with apec ro-45, ro-ph90, ro-90, ro-hi, ro-perm, ro-pump, wfs-1000 and all other standard size under counter reverse osmosis systems. Apec ultimate high capacity pre-filter set is USA made and built to last 2x longer than other brands. 1st stage polypropylene sediment filter to remove dust, particles, and rust. 2nd & 3rd stage extruded carbon block filters to remove chlorine, taste & odor.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height4.8 Inches
Length11.5 Inches
Weight2 Pounds
Width9.3 Inches
Part NumberFILTER-SET
ModelFILTER-SET

6. FS-TFC

#ad

FS-TFC 5-stage Reverse Osmosis System Replacement Filter Set 1-Year Replacement Filter Set for Standard Reverse Osmosis System 50 GPD Ro Filters,5Pack

#ad
FS-TFC #ad - We can provide lifetime support guarantee and 30-Day Money Back Guarantee. Standard 10 inch replacement filter set, individually wrapped 1-year high capacity filter replacement cartridge pack, Universal Compatible for most standard 5 or 6 stage RO systems.

Package includes:pp sediment*1, 50 gpd reverse osmosis membrane*1, 1/4"npt quick fittings*3, Quick Connect Post Carbon Filter*1, Carbon Block Filter*1, gruanlar activated Carbon*1, Wrench*1. Enjoy crystal clear ice cubes, healthier baby formula, better tasting foods, safe, Better than most bottled water. Fs-tfc reverse osmosis replacement filter tested by independent third-party to meet NSF/ANSI 58 standrad, ensure safety and non-toxic. Have any questions, Please contact us immediately. Experience clean, fresher tea and coffee, and good-tasting water.
BrandFS-TFC #ad
ManufacturerFS-TFC Water Systems #ad
Height3 Inches
Length11 Inches
Weight4 ounces
Width3 Inches
Part NumberFBA-5PACK
ModelTFC-0050

7. iSpring

#ad

Without Membrane, iSpring F9K 1-Year Reverse Osmosis Water Filter Replacement Cartridge Pack Set for 6-Stage Alkaline Mineral RO Filtration Systems, White

#ad
iSpring #ad - 0 or below. 9 pieces of 10" x 2. Alkaline mineral filter produces alkaline water with restored healthy minerals such as natural calcium, magnesium, and potassium ions, which ph-balances the RO water. As a result, a standard 5 stage RO system produces slightly acidic water with a pH of 7.

This filter pack does not include an ro membrane. Experience clean, and good-tasting water every time you turn on the faucet. 5" replacement water filters included: 2x sediment filters, 2x granular activated carbon filters, 2x carbon block filters, 1x post-carbon filter, and 2x alkaline filters. The ro membrane removes not only harmful pollutants but also a few helpful minerals. Enjoy crystal clear ice cubes, fresher tea and coffee, safe, better tasting foods, healthier baby formula – even better than most bottled water.

Individually wrapped 1-year high capacity filter replacement cartridge pack for 6-stage RO systems. Updated fa15 alkaline mineral filters and FT15 post-carbon filters are built with a secure push-fit quick connection, which allows faster filter replacement. If you have trouble installing the filters, please refer to the user manual or contact us.
BrandiSpring #ad
ManufactureriSpring #ad
Height10 Inches
Length2.5 Inches
Weight5.95 Pounds
Width2.5 Inches
Part NumberF9K
ModelF9K

8. Aquasana

#ad

Aquasana Replacement Filters Stage 1 and 3 for Aquasana OptimH20 Reverse Osmosis Water Filter

#ad
Aquasana #ad - Use only genuine aquasana replacements - untested replacements are not certified for performance capacity or contaminant removal. Genuine replacement filters stages 1 and 3 for Aquasana OptimH20 Reverse Osmosis Water Filter: AQ-RO-3. Removes over 95% of fluoride plus up to 99% of 87 other contaminants like lead, mercury, asbestos, and more. Replacements made easy - no tools or plumber required - replace membrane every 6 months. Full system nsf certified to standards 42, 53, 58, 401 + P473 - will not leach contaminants back into your water.
BrandAquasana #ad
ManufacturerAquasana Inc. #ad
Height2.5 Inches
Length10 Inches
Weight1.72 Pounds
Width2.5 Inches
Part NumberAQ-RO3-R
ModelAQ-RO3-R

9. APEC Water Systems

#ad

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

#ad
APEC Water Systems #ad - 4th stage high rejection tfc reverse osmosis membrane removes a wide range of contaminants. 2nd and 3rd stage 10 micron extruded carbon block filter to remove chlorine, taste and odor. Apec roes-50 complete replacement filter set, compatible with most 10" standard under the counter reverse osmosis water systems. 5th stage standard capacity coconut shell carbon filter removes any last residuals. 1st stage 5 micron sediment filter to remove dust, particles and rust.
BrandAPEC Water Systems #ad
ManufacturerAPEC Water Systems #ad
Height6 Inches
Length12 Inches
Weight3.5 Pounds
Width10 Inches
Part NumberFILTER-MAX-ES50
ModelFILTER-MAX-ES50

10. AQUA TRU

#ad

Replacement Reverse Osmosis Filter Stage 3 for Countertop Reverse Osmosis Water Filter Purification System, AquaTru

#ad
AQUA TRU #ad - The high-efficiency reverse osmosis replacement FilterStage 3 Filter is made exclusively to fit the AquaTru Countertop Water Filter Purfiication System. This reverse osmosis filter Stage 3 filter will last two years or 1200 gallons, whichever comes first. The ro membrane is designed to reduce toxic inorganic contaminants from the water down to 1/10000 of a micron including arsenic, lead, Chromium 6, nitrates and more!. Only use aquatru genuine replacement Filters in AquaTru Reverse Osmosis Water Filter Purfication Systems.
BrandAQUA TRU #ad
ManufacturerAQUA TRU #ad
Height2.9 Inches
Length10.2 Inches
Weight0.85 Pounds
Width3.2 Inches
Part Numberunknown
Model8541998171