10 Best RO System Filters for Crystal-Clear Water

Looking for the best RO system filters? Real users rave about their improved water quality after using these filters, achieving crystal-clear, delicious water daily.

Are you seeking pure and safe drinking water? It all starts with choosing the best replacement filters for your RO system. Finding the right fit can seem tricky.

But don’t worry, we’ve got you covered! We have researched several top options to simplify your choice. Let’s dive in to discover the perfect filters for cleaner, healthier water.

Real users constantly share their amazement at how their water quality turned from ordinary to delightful. They are enjoying crystal-clear, delicious water every day. Our simple advice will steer you towards filters for the absolute best water possible.

List of Top 10 RO System Filters

Image Title Best For Price
APEC Water Systems FILTER-MAX-ESPH 75 GPD Complete Replacement Filter Set for ESSENCE Series Alkaline Reverse Osmosis Water Filter System APEC Water Systems FILTER-MAX-ESPH 75 GPD Complete Replacement Filter Set for ESSENCE Series Alkaline Reverse Osmosis Water Filter System

This replacement filter set is perfect for owners of the APEC Water Essence series ROES-PH75 who want fresh, clean water right at home. It’s ideal for families and health fans needing alkaline, contaminant-free drinking water from their reverse osmosis system.

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

This FILTER-SET-ES is perfect for homeowners with APEC Essence Series RO systems like ROES-50, ROES-PH75, or ROES-UV75. It helps busy families keep water clean by removing dirt, rust, chlorine, and bad tastes fast.

Puroflo ERO 5 pc Reverse Osmosis Filters Yearly Set, 5 Stage Reverse Osmosis Water Filter, Under Sink RO Water Filtration System Kit, Compatible with Most 10 Puroflo ERO 5 pc Reverse Osmosis Filters Yearly Set, 5 Stage Reverse Osmosis Water Filter, Under Sink RO Water Filtration System Kit, Compatible with Most 10″ RO System, Water Filter Wrench Included

This product is perfect for busy homeowners who want clean, tasty water from their tap. It fits families seeking an easy, affordable way to remove harmful contaminants like lead and chlorine.

Vegebe 3-Stage Pre-Filter Fit for APEC RO System, Water Filter Replacement Set Fit for Essence & Ultimate Series ROES-(50/75/ PH75), RO-(45/90/ PH90/ Hi/PERM/Pump), WFS-1000 Reverse Osmosis System Vegebe 3-Stage Pre-Filter Fit for APEC RO System, Water Filter Replacement Set Fit for Essence & Ultimate Series ROES-(50/75/ PH75), RO-(45/90/ PH90/ Hi/PERM/Pump), WFS-1000 Reverse Osmosis System

This Vegebe 3-Stage Pre-Filter is perfect for people who own APEC RO systems and need to keep their drinking water clean and free from dirt, chemicals, and bad tastes. It’s great for families who care about health and want easy, reliable replacements for their reverse osmosis setups.

SimPure 5-Stage Reverse Osmosis Replacement Filter Set with 75 GPD RO Membrane, 5pc Pre & Post Replacement Cartridge Pack Kit for Standard 10-icnh 5-Stage Reverse Osmosis RO Systems SimPure 5-Stage Reverse Osmosis Replacement Filter Set with 75 GPD RO Membrane, 5pc Pre & Post Replacement Cartridge Pack Kit for Standard 10-icnh 5-Stage Reverse Osmosis RO Systems

This 5-stage replacement filter set is perfect for homeowners who have standard 10-inch under-the-counter reverse osmosis systems and want fresh, clean drinking water. It fits most 5 or 6-stage RO units and removes tough contaminants like heavy metals and fluoride while improving the taste of your water.

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

This replacement filter pack is perfect for people who own a standard 5-stage reverse osmosis system and want to keep their water clean, safe, and tasting great. It’s ideal for families who want to treat every day like it’s special for their health.

iSpring F9K NSF Certified 1-Year Reverse Osmosis Water Filter, Alkaline Remineralization Filters for 6-Stage RO Systems, Without RO Membrane iSpring F9K NSF Certified 1-Year Reverse Osmosis Water Filter, Alkaline Remineralization Filters for 6-Stage RO Systems, Without RO Membrane

This pack is perfect for families and homeowners who want clean, great-tasting water all year. It is ideal for people with 6-stage RO systems who need easy, quick filter changes and for anyone who wants alkaline, mineral-balanced water for drinking, cooking, and baby formula.

NSF Certified 5 Stage Reverse Osmosis RO Water Filters Replacement Set 100 GPD RO Membrane Standard 10 Inch Inline Water Filter with 1/4-Inch Quick-Connect NSF Certified 5 Stage Reverse Osmosis RO Water Filters Replacement Set 100 GPD RO Membrane Standard 10 Inch Inline Water Filter with 1/4-Inch Quick-Connect

Tired of bad-tasting water? This RO filter set is perfect for anyone who wants clean, pure water right from their tap. It’s easy to install and works with most RO systems, so you can enjoy better water today!

Membrane Solutions Reverse Osmosis Filter Replacement, 75 GPD Complete Replacement Filter Set For 10-inch Under Sink 5-Stage Reverse Osmosis Replacement Water Filter System Membrane Solutions Reverse Osmosis Filter Replacement, 75 GPD Complete Replacement Filter Set For 10-inch Under Sink 5-Stage Reverse Osmosis Replacement Water Filter System

This reverse osmosis filter set is perfect for homeowners who want clear, clean water from their under-sink systems. It fits many popular brands and makes replacing filters quick and easy for better tasting drinks and cooking.

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

This replacement filter set is perfect for owners of the APEC Water ESSENCE Series ROES-50 under-sink system who want clean and fresh drinking water at home. It removes dust, rust, and bad tastes to keep your family safe from harmful stuff in the water.

Detailed Reviews

Discover the top 10 RO system filters picked with expert analysis and real customer feedback. These picks offer strong features, great performance, and good value. See reviews that help you choose for comfort and cost. Find your perfect guide to clean water today.

1. APEC Water Systems FILTER-MAX-ESPH 75 GPD Complete Replacement Filter Set for ESSENCE Series Alkaline Reverse Osmosis Water Filter System

APEC Water Systems FILTER-MAX-ESPH 75 GPD Complete Replacement Filter Set for ESSENCE Series Alkaline Reverse Osmosis Water Filter System

Upgrade your APEC Essence water filter with this complete replacement set. It fits the ROES-PH75 system and cleans your water in six stages for pure results.

Enjoy cleaner, safer water at home every day. Change filters regularly to keep your system top-notch. Buy now and feel the difference in your glass.

Pros Cons
  • Removes dust, rust, chlorine for clean water.
  • Filters wide contaminants with 75 GPD membrane.
  • Clears residuals using natural carbon filter.
  • Boosts pH with US-made alkaline filter.
  • Quick-connect setup makes replacement easy.
  • Expensive filter costs add up fast.
  • Produces wastewater during cleaning process.
  • Needs regular replacements for best results.

Perfect For:

This replacement filter set is perfect for owners of the APEC Water Essence series ROES-PH75 who want fresh, clean water right at home. It’s ideal for families and health fans needing alkaline, contaminant-free drinking water from their reverse osmosis system.

Ready to Purchase?

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

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

Ready for cleaner, safer water? The APEC Water Systems FILTER-SET-ES is your answer. This is the perfect fit for your Essence Series RO system. Get ready to enjoy better-tasting water daily.

This set is easy to install. You’ll taste the difference immediately!

This set includes sediment and carbon block filters. It’s designed to extend the life of your RO system. Get your APEC Water Filter Set today!

Pros Cons
  • Protect and extend your RO system’s life – it’s easy!
  • Removes dust, rust, and particles efficiently.
  • Enjoy clean, great-tasting water every time.
  • Fits all standard under-counter RO systems.
  • Easy to install, a simple filter replacement!
  • Limited to specific APEC models only.
  • Needs frequent replacement every 6-12 months.
  • Lacks post-filter or membrane protection.

Perfect For:

This FILTER-SET-ES is perfect for homeowners with APEC Essence Series RO systems like ROES-50, ROES-PH75, or ROES-UV75. It helps busy families keep water clean by removing dirt, rust, chlorine, and bad tastes fast.

Ready to Purchase?

3. Puroflo ERO 5 pc Reverse Osmosis Filters Yearly Set, 5 Stage Reverse Osmosis Water Filter, Under Sink RO Water Filtration System Kit, Compatible with Most 10″ RO System, Water Filter Wrench Included

Puroflo ERO 5 pc Reverse Osmosis Filters Yearly Set, 5 Stage Reverse Osmosis Water Filter, Under Sink RO Water Filtration System Kit, Compatible with Most 10

Tired of bad-tasting tap water? Get the Puroflo ERO 5 pc Reverse Osmosis Filters today!

This yearly set makes replacing your RO filters easy. Experience pure, tasty water that’s better than bottled. Save money and enjoy healthier hydration.

The kit includes everything you need: sediment filter, carbon filters, RO membrane, and more! It works with most 10″ RO systems. Install it easily with the included wrench.

Pros Cons
  • Eliminates thousands of harmful contaminants from tap water.
  • Provides pure, tasty water better than bottled.
  • Easy to install with step-by-step guides.
  • Compatible with most standard RO systems.
  • Offers long filter life up to one year.
  • Produces lots of waste water during filtering
  • Water flows slowly through the system
  • Needs quick connects and tools for install

Perfect For:

This product is perfect for busy homeowners who want clean, tasty water from their tap. It fits families seeking an easy, affordable way to remove harmful contaminants like lead and chlorine.

Ready to Purchase?

4. Vegebe 3-Stage Pre-Filter Fit for APEC RO System, Water Filter Replacement Set Fit for Essence & Ultimate Series ROES-(50/75/ PH75), RO-(45/90/ PH90/ Hi/PERM/Pump), WFS-1000 Reverse Osmosis System

Vegebe 3-Stage Pre-Filter Fit for APEC RO System, Water Filter Replacement Set Fit for Essence & Ultimate Series ROES-(50/75/ PH75), RO-(45/90/ PH90/ Hi/PERM/Pump), WFS-1000 Reverse Osmosis System

Looking for cleaner, safer water? The Vegebe 3-Stage Pre-Filter Set is your answer. It fits many APEC RO systems perfectly. Get ready for better-tasting water today!

This set has everything you need. You get sediment and carbon block filters. These filters last for 6-12 months. That means fewer replacements and more savings!

It’s safe and easy to use. Enjoy pure, refreshing water now.

Pros Cons
  • Fits most APEC RO systems easily.
  • Clears sediment and rust fast.
  • Cuts chlorine and bad tastes.
  • Lasts 6-12 months with use.
  • Made from safe, food-grade parts.
  • Label might be different than expected.
  • Filter life varies based on water quality.

Perfect For:

This Vegebe 3-Stage Pre-Filter is perfect for people who own APEC RO systems and need to keep their drinking water clean and free from dirt, chemicals, and bad tastes. It’s great for families who care about health and want easy, reliable replacements for their reverse osmosis setups.

Ready to Purchase?

5. SimPure 5-Stage Reverse Osmosis Replacement Filter Set with 75 GPD RO Membrane, 5pc Pre & Post Replacement Cartridge Pack Kit for Standard 10-icnh 5-Stage Reverse Osmosis RO Systems

SimPure 5-Stage Reverse Osmosis Replacement Filter Set with 75 GPD RO Membrane, 5pc Pre & Post Replacement Cartridge Pack Kit for Standard 10-icnh 5-Stage Reverse Osmosis RO Systems

Want pure, clean water? The SimPure 5-Stage Reverse Osmosis Replacement Filter Set is your answer! It works with most 10-inch RO systems to give you the best water possible.

This set has everything you need for a full filter change. It includes PP, GAC & CTO Filters, a 75 GPD RO Membrane, and a post-carbon filter. Enjoy better tasting, healthier water every day!

It removes dirt, rust, and chemicals. Your water will be cleaner and fresher. Get yours today for ultimate purity!

Pros Cons
  • Universal fit: Works with most standard 10″ RO systems.
  • Clean water: Removes harmful contaminants effectively.
  • Great taste: Improves the flavor of your drinking water.
  • Filter protection: Protects other filters, extending system life.
  • Easy install: Quick-connect fittings make setup simple.
  • May need a separate adapter for 3/8″ tubing systems.
  • Check filter size; not universally compatible.
  • Only for 1/4″ PE tubing; other sizes need adapters.

Perfect For:

This 5-stage replacement filter set is perfect for homeowners who have standard 10-inch under-the-counter reverse osmosis systems and want fresh, clean drinking water. It fits most 5 or 6-stage RO units and removes tough contaminants like heavy metals and fluoride while improving the taste of your water.

Ready to Purchase?

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

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

Tired of replacing your RO system filters one by one? Get the iSpring F7-GAC filter pack for one full year of clean water. It’s designed for standard 5-stage RO systems.

Enjoy water that tastes great with this 7-piece replacement filter set. You will get crystal-clear ice cubes and more flavorful drinks. It’s even better than bottled water!

This pack has everything you need, minus the RO membrane. Replacing filters is easy and secure. Enjoy fresh, safe water!

Pros Cons
  • High-capacity 1-year filters for easy water replacement.
  • Clean, safe, great-tasting water from your home faucet.
  • Complete 7-piece set catches harmful impurities.
  • Hassle-free push-fit install saves your time and effort.
  • Better food, drinks, and baby formula with pure water.
  • RO membrane not included, buy it separately.
  • Changing all 7 filters can take some time.

Perfect For:

This replacement filter pack is perfect for people who own a standard 5-stage reverse osmosis system and want to keep their water clean, safe, and tasting great. It’s ideal for families who want to treat every day like it’s special for their health.

Ready to Purchase?

7. iSpring F9K NSF Certified 1-Year Reverse Osmosis Water Filter, Alkaline Remineralization Filters for 6-Stage RO Systems, Without RO Membrane

iSpring F9K NSF Certified 1-Year Reverse Osmosis Water Filter, Alkaline Remineralization Filters for 6-Stage RO Systems, Without RO Membrane

Upgrade your home water with the iSpring F9K 1-year replacement pack. It holds 9 high-capacity filters for 6-stage RO systems.

This pack brings clean, safe water to your tap. It makes great-tasting water for drinking and cooking. The alkaline filters add back healthy minerals.

It fits standard 10-inch housings easy. Enjoy better ice and fresher drinks daily.

Pros Cons
  • Enjoy 1-year of clean water filtration easily.
  • Fits standard RO systems without hassle.
  • Delivers safe, great-tasting water every sip.
  • Adds healthy minerals for balanced alkaline drink.
  • Quick replacements save time and effort.
  • No RO membrane included separately.
  • Installation might be tricky for some.
  • Requires standard RO system housing.

Perfect For:

This pack is perfect for families and homeowners who want clean, great-tasting water all year. It is ideal for people with 6-stage RO systems who need easy, quick filter changes and for anyone who wants alkaline, mineral-balanced water for drinking, cooking, and baby formula.

Ready to Purchase?

8. NSF Certified 5 Stage Reverse Osmosis RO Water Filters Replacement Set 100 GPD RO Membrane Standard 10 Inch Inline Water Filter with 1/4-Inch Quick-Connect

NSF Certified 5 Stage Reverse Osmosis RO Water Filters Replacement Set 100 GPD RO Membrane Standard 10 Inch Inline Water Filter with 1/4-Inch Quick-Connect

Get pure water with our NSF Certified 5 Stage Reverse Osmosis RO Water Filters Replacement Set. These filters cut out harmful stuff like heavy metals and chlorine for safe, tasty drinking water. They are made with top-quality materials that last and protect your family.

Our set includes sediment filters to block dirt and rust, plus carbon filters that kill bad tastes and smells. The 100 GPD RO membrane gives you fast, clean water flow. A final post-carbon filter makes every sip taste better.

This kit fits most 10-inch RO systems, such as APEC and Watts models. It comes with easy quick-connect parts and a wrench for simple setup.

Pros Cons
  • Get safe, pure water that removes bad substances.
  • Enjoy better taste from filtered, clean drinking water.
  • Install easily with quick-connect design.
  • Works with many RO systems for broad use.
  • Filters last 6-12 months based on your water.
  • Filter life varies based on your water quality.
  • Lifespan may be shorter than expected, depending on water.

Perfect For:

Tired of bad-tasting water? This RO filter set is perfect for anyone who wants clean, pure water right from their tap. It’s easy to install and works with most RO systems, so you can enjoy better water today!

Ready to Purchase?

9. Membrane Solutions Reverse Osmosis Filter Replacement, 75 GPD Complete Replacement Filter Set For 10-inch Under Sink 5-Stage Reverse Osmosis Replacement Water Filter System

Membrane Solutions Reverse Osmosis Filter Replacement, 75 GPD Complete Replacement Filter Set For 10-inch Under Sink 5-Stage Reverse Osmosis Replacement Water Filter System

This 5-stage RO filter set fits most 10″ under-sink systems. It includes a 75 GPD membrane and four filters for clear water. Installation is quick and easy.

The filters remove up to 99% of contaminants for drinking and cooking. All parts are NSF42 and ISO9001:2015 certified.

Pros Cons
  • Full set replaces all 5 RO filters easily.
  • Fits most systems for universal compatibility.
  • Enjoy cleaner water with 99% contaminant removal.
  • Simple install, easy filter changes, saves time.
  • Premium filter provides safer, fresher water.
  • Compatibility checks needed for filter size
  • Extra adapters required for 3/8″ tubing
  • T-fittings may add steps to setup

Perfect For:

This reverse osmosis filter set is perfect for homeowners who want clear, clean water from their under-sink systems. It fits many popular brands and makes replacing filters quick and easy for better tasting drinks and cooking.

Ready to Purchase?

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

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

Want clean water? The APEC ESSENCE Series FILTER-MAX-ES50 is your answer. It fits the ROES-50 system for easy use.

This set has five filters. Each filter removes different things. You get pure, great-tasting water.

It is easy to get started. The water will be so much better.

Pros Cons
  • Filters out dust and particles easily.
  • Removes bad taste and smell.
  • Cleans water of many harmful things.
  • Uses reverse osmosis for pure water.
  • Fits the ROES-50 system perfectly.
  • Slow water flow delays your hydration.
  • Frequent replacements add to your maintenance costs.
  • Complex installation might need extra tools.

Perfect For:

This replacement filter set is perfect for owners of the APEC Water ESSENCE Series ROES-50 under-sink system who want clean and fresh drinking water at home. It removes dust, rust, and bad tastes to keep your family safe from harmful stuff in the water.

Ready to Purchase?

Buying Guide

Pure water makes life better every day. Finding the right filters keeps it that way.

Many users say their water tastes amazing after switching filters. They notice clearer ice and fresher drinks right away.

  • Compatibility: Check if the filters fit your specific RO system model. This ensures easy setup and top performance without issues.
  • Flow Rate: Pick filters with a good gallons per day rate for your needs. More flow means faster water for drinking and cooking.
  • Stages: Look for multi-stage systems that remove more contaminants. Five or six stages often give the best clean results.
  • Budget: Find filters that match what you can spend. Cheaper options work for basic needs while premium ones last longer.
  • Certifications: Choose filters with NSF or ISO approvals for safety. These prove the filters remove harmful stuff effectively.
  • Installation Ease: Go for sets with simple tools like wrenches included. Quick setup saves time and avoids mistakes.
  • Lifespan: Select filters that last 6 to 12 months before replacement. Longer life means less hassle and more savings.