A reverse osmosis system treats water in different stages. The stages involve filters that help remove various contaminants and protect the RO membrane. For maximum performance, it is recommended to change all filter cartridges every 3-6 months and post-filter every 6-12 months. In this article, we have reviewed reverse osmosis replacement filters.
Reverse osmosis replacement filters

The F7-GAC comes with seven standard sized 10″ x 2.5″ replacement filters, and each one of them is wrapped on its own to maintain freshness and extend shelf-life.
Includes
- Two 5 Micron 10″ FP15 sediment filters – for the first stage and ideal for removing sand, rust, dirt, and other large particles. Replace the filter every six months.
- Two 5 Micron 10″ FG15Granular Activated Carbon (GAC) filters – for the second stage and should be replaced every six months. It is best for removing chlorine, organic contaminants, halide, odors, and taste.
- Two 5 Micron 10″ CTO Carbon Block filters (third stage)– Removes any remaining chlorine, odor, and tastes. Replace after every six months.
- Two 5 Micron 10″ FT15 post-carbon inline filter 5-stage) – polishes water in the tank before it is delivered to the faucet. Replace every 12 months.
The replacement filter fits iSpring RCC7, RCC7P, and other Reverse Osmosis system that use a standard sized filter like Apec, Crystal quest, Flowmatic, and Puroline
Other types of iSpring RO replacement filter
iSpring F3 6-Month Prefilter Replacement Supply Filter Cartridge Pack Set for Standard Reverse Osmosis RO Systems, F3- https://amzn.to/2Qibhwg
iSpring F19K75 2-Year Replacement Supply Set for 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter, White- https://amzn.to/2Yt725A
iSpring F28K75 3-Year Replacement Supply Set for 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter, White- https://amzn.to/34oDmdC
iSpring F22-75 3-Year Replacement Supply Filter Cartridge Pack Set for Standard 5-Stage Reverse Osmosis RO Systems- https://amzn.to/3l7XmXK
iSpring F5-75 5-Stage Reverse Osmosis Replacement Water Filter Pack Set with 75 GPD RO Membrane Cartridge- https://amzn.to/2YqkerY
iSpring F15-75 2-Year Replacement Supply Filter Cartridge Pack Set for Standard 5-Stage Reverse Osmosis RO Systems, white, 15 Piece- https://amzn.to/34oqiF1
iSpring FA15 10-inch Inline Quick Connect 3-Layer Alkaline Replacement Water Filter Cartridge with Mineral Balls, Calcite, and Corosex for Reverse Osmosis RO System- https://amzn.to/3hlnsnV
iSpring F4 for Standard Reverse Osmosis RO Systems with Post Carbon 6-Month Replacement Supply Filter Cartridge Pack Set, F4, White, 4 Piece- https://amzn.to/2QgaOdZ
iSpring F15-100 2-Year Replacement Supply Water Filter Cartridge Pack Set for Standard 5-Stage Reverse Osmosis RO Systems, 15- https://amzn.to/2Yt7rVE
iSpring F28D75 3-Year Replacement Filter Set for 6-Stage 75GPD De-Ionization Reverse Osmosis Water Filter, Fits iSpring RCC7D (28pcs 6SED 6GAC 6CTO 3T33 1MC7 6DI)- https://amzn.to/2YokMhZ
iSpring FT15 5th Stage Inline Post Carbon Filter Replacement Cartridge, 0.7, White- https://amzn.to/3j9ExBP
iSpring F15-500, 500 GPD Tankless RO System Replacement Filter Set, 2-Year Supply, fits RCS5T, White, 15 Piece- https://amzn.to/3iYYefo
iSpring F19D75 2-Year Replacement Set for 75GPD 6-Stage De-Ionization Reverse Osmosis Water Filter, 2.5″ x 10″, White- https://amzn.to/2Yt7OQ2
iSpring F9D 1-Year Replacement Set for DI RO Water Filter, 2.5″ x 10″, White- https://amzn.to/2CR2nCT
iSpring F22-100 5-Stage 100GPD 3-Year Water Filter Replacement Cartridge Supply, Fits RCC1P- https://amzn.to/3ldzbaC
iSpring F7-GAC for Standard 5-Stage Reverse Osmosis RO Systems 1-Year Replacement Supply Filter Cartridge Pack Set- https://amzn.to/34nXTPn
Whirlpool WHEERF Reverse Osmosis Replacement Pre/Post Water Filters

The Whirlpool replacement filter is NSF certified to reduce contaminants such lead, cysts, dissolved solids, chlorine taste and odor, sediment, arsenic (pentavalent), barium, cadmium, chromium (vl), chromium (III), copper, nitrate, nitrite, radium, selenium, fluoride, turbidity, ammonium, bicarbonate, bromide, chloride, magnesium, sodium, sulfide, tannin, zinc and chemicals
Make sure you replace the filter every six months to make the system work smoothly and to ensure high-quality water is available for your family
The filter has an additional feature it includes an EZ – change indicator light to notify when its time to change the filter
This pre/post filter fits WHAROS5, WHAPSRO, and WHER25 systems.
Watts reverse osmosis replacement filters
Watts 7-PK RO Filters Premier 1

The watts7-PK RO Filters packs seven high-quality replacement filters that are designed for use with Watts Premier’s RO-TFM-5SV, WP-ST6DM, WP-5 and WP5-50 Reverse Osmosis Systems. It is also compatible with all standard RO and filtration systems.
It is compatible with any standard 10″ filter housing
Includes:
- Two 10-inch sediment filter (104017)– removes dust, rust, and silt
- Four 10-inch carbon pre-filter (101009)- removes chlorine, chloramines, taste, and odor
- One 10-inch GAC (Granular Activated Carbon) Inline Post-Filter (560010) polishing filter- for final polishing water
It is recommended to change out the Sediment and Carbon Pre-filters every 6 months, the GAC Inline Post-Filter should be changed out annually
The entire replacement filters are worth replaced every one year and are NSF certified.
The watts replacement filter fits 5-stage Watts reverse osmosis filter and other standard RO system.
More Watts reverse osmosis replacement filters
Watts Premier 500124 WP-4V Replacement Filter Pack for Reverse Osmosis System- https://amzn.to/31kaAsI
Watts Premier WP531152 RO Pure 4 Pack Replacement Filters- https://amzn.to/32d1jlu
Watts Premier 531109 Annual Replacement Filter Kit- https://amzn.to/3aM6NHC
Watts Premier Ro Pure Replacement Filter 6-pack Plus Membrane- https://amzn.to/34nRAeP
Watts Premier 531161 RO Pure Plus 6 Pack Filter Kit- https://amzn.to/3l72AmA
Watts Premier 560039 UF-3 Ultra Filtration, 5-Filter Annual Water Filter Replacement Pack- https://amzn.to/34lpYXC
Watts Premier WP531102 RO Pure/ Pure Plus Push Button Bi-Annual Filter Kit- https://amzn.to/2QcfEsC
Watts Premier WP531105 RO Pure Annual Filter Kit, 1-Pack- https://amzn.to/3gjP23u
Watts Premier WP105341 RO Pure Carbon Post-Filter, 12" x 2.5" x 2.5", Plain- https://amzn.to/31grAzY
Watts Premier WP105381 RO Pure Plus VOC Filter- https://amzn.to/3hwHuvy
Watts Premier W-2R-2Y-1B-1G Ro Pure Replacement Filter Plus Membrane, 6-pack- https://amzn.to/3hkvpK3
Watts Premier WP560032 Standard 10 Inch 4-Stage Filter Kit with 10 Inch Inline- https://amzn.to/31iWWWt
Watts Premier 105311 RO-4 RO-Pure UF3 Sediment Filter- https://amzn.to/3gm7CYI
Watts Premier WP105371 UF-3 LVOC Filter, Plain- https://amzn.to/3hmzeyb
Watts Premier WP500024 Standard Annual 7 Pack Replacement Filter Kit, White, 10.5″ x 19.50″ x 3″ (WPRL-58) – https://amzn.to/34mMHm4
APEC FILTER Reverse Osmosis Water Filter System

APEC set includes one sediment filter and two carbon block filters.
First stage polypropylene sediments filter for stage 1 removes rust, dust, and particles while second and third stage extruded carbon block filter removes chlorine, taste, and odor.
The filter is compatible for APEC RO-45, RO-90, RO-PERM, RO-PUMP and all standard sized under counter RO system
Other types of APEC replacement filter
APEC FILTER-SET-ESX2 2 Sets of High Capacity Replacement Pre-Filter Sets for ESSENCE Series Reverse Osmosis Water Filter System Stage 1, 2&3, pack of 2 sediments and four carbon black Filters
APEC FILTER-SET-ESPH High Capacity Replacement Filter Set for ESSENCE Series Alkaline Reverse Osmosis Water Filter System Stage 1, 2, 3&6
GE FX12P FX12M replacement filter

GE FX12P replaces one 9-3/4-Inch long pre-filter and one 9-3/4-Inch long post-filter. Replace filters every six months or 900 gallons for fresh, filtered water.
The filter is compatible with the GXRM10RBL system and GE Smartwater reverse osmosis water systems.
It is fit for reducing 15 contaminants in water including cysts, chlorine, lead, and arsenic.
The filters are certified by NSF and ANSI thus guarantees safe water for drinking.
Other types of GE RO replacement filter
GE Profile FQROPF Reverse Osmosis Replacement Filter Set
After purchasing your RO filter make sure you find a TDS meter /water tester to see whether the system is working well.