Reverse Osmosis Replacement Filters

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APEC  ULTIMATE Sediment Pre-filter 10 Inch, 5 Micron
Sale price$12.99 USD Regular price$13.99 USD
APEC RO Replacement Filters Pre-filter Set for All Under Counter ULTIMATE Reverse Osmosis Systems (Stages 1 - 3)
APEC RO Replacement Filters Pre-filter Set for ULTIMATE RO-CTOP, RO-CTOP-C, RO-CTOP-PH and RO-CTOP-PHC Countertop Reverse Osmosis Systems (Stages 1 and 2)
APEC 10 Inch High Purity pHPlus Calcium Carbonate Re-mineralization Inline Filters
APEC ULTIMATE Series 10 Inch x 2.5 Inch Carbon Block Pre-filter
APEC ESSENCE Stage 1 , 10 Inch , 5 Micron Sediment Replacement Filter For Undersink System(FI-ES-SED10)
APEC ESSENCE 10 Inch Carbon Block Filter, 10 Micron
APEC High Purity pHPlus Calcium Carbonate Re-mineralization Inline Filters 10 Inch with 3/8" Quick Connect
APEC RO Replacement Filters Pre-filter Set for ULTIMATE RO-CTOP-PH and RO-CTOP-PHC Countertop Reverse Osmosis Systems (Stages 1 2 and 4)
APEC RO Replacement Filters Pre-filter Set for ULTIMATE RO-QUICK90 Reverse Osmosis Systems (Stages 1 and 2)
APEC RO Replacement Filters for All-in-One Tankless Reverse Osmosis Systems
APEC Calcite & Magnesium Water Neutralizer Filter, 2" X 10 Inch (1/4" Quick Connect)
APEC 1st Stage Sediment and Carbon RO Replacement Filters for ROTL-600 Tankless RO System
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APEC RO Replacement Filters Bundle of 2 Super Capacity Filter Set for all Under Counter ULTIMATE Reverse Osmosis Systems
APEC RO Replacement Filters Complete Set for ROTL-600 Tankless RO System
APEC 3rd Stage Carbon Block RO Replacement Filters for ROTL-600 Tankless RO System
APEC 3rd Stage pHPlus RO Replacement Filters for ROTL-600-PH Tankless RO System
APEC RO Replacement Filters Pre-filter Set for All ESSENCE Reverse Osmosis Systems (Stages 1-3)
APEC 2nd Stage RO Replacement Filters for ROTL-600 Tankless RO System
APEC RO Replacement Filters Pre-filter Set for ESSENCE 75 GPD PH Reverse Osmosis Systems (Stages 1-3 and 6)
On Sale
APEC RO Replacement Filters Bundle of 2 Essence Pre-Stage Replacement Filter Set
APEC  ULTIMATE Inline Carbon Post-filter 10 Inch
APEC RO Replacement Filters Pre-filter Set for All ULTIMATE 90 GPD PH RO Systems (Stages 1 - 3 and 6) - With 3/8"D Tubing Quick Dispense Upgrade
APEC RO Replacement Filters Complete Filter Set for ULTIMATE RO-Hi model, and RO-90 and RO-PERM Models With 3/8"D Tubing Quick Dispense Upgrade (Stages 1-5)
APEC RO Replacement Filters Complete Filter Set for ULTIMATE RO-CTOP and RO-CTOP-C Countertop Reverse Osmosis Systems (Stages 1-4)
APEC ULTIMATE Inline Sediment Pre-filter 10 Inch, with 1/4"Quick-Connect
APEC RO Replacement Filters Pre-filter Set for ESSENCE ROES-PHUV75 V2 Reverse Osmosis Systems (Stages 1-3, 5 and 7)
APEC ESSENCE 10 Inch Inline Carbon Filter With Quick Connect, 5 Micron
APEC Reverse Osmosis Membrane 30-50 GPD for ESSENCE ROES-50 Systems
01

Activated Carbon Technology

Premium Extruded Carbon Block 10 Inch -gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors. Also removes VOCs and other common chemicals from the water.

02

Sediment Filters

High-Grade 5 micron 10 Inch high-capacity polypropylene sediment filter -removes dust, particles, and rust. 100% pure polypropylene depth filter with exceptional dirt-holding capacity translates to longer life and fewer change-outs than existing string-wound or resin-bonded filters.

03

High Flow Membrane

Select FILMTEC (Dow Chemical) High Rejection TFC reverse osmosis membrane. Removes up to 99% of total dissolved solids (TDS) and contaminants such as arsenic, lead, fluoride, chromium, radium, bacteria, viruses and much more.

01

Activated Carbon Technology

Premium Extruded Carbon Block 10 Inch -gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors. Also removes VOCs and other common chemicals from the water.

02

Sediment Filters

High-Grade 5 micron 10 Inch high-capacity polypropylene sediment filter -removes dust, particles, and rust. 100% pure polypropylene depth filter with exceptional dirt-holding capacity translates to longer life and fewer change-outs than existing string-wound or resin-bonded filters.

03

High Flow Membrane

Select FILMTEC (Dow Chemical) High Rejection TFC reverse osmosis membrane. Removes up to 99% of total dissolved solids (TDS) and contaminants such as arsenic, lead, fluoride, chromium, radium, bacteria, viruses and much more.

APEC Reverse Osmosis Filter Replacement Guide

Why Regular Filter Replacement Matters

Your APEC reverse osmosis system is like a car; regular oil changes and maintenance is required from time to time. The same idea applies to your water filters. Over time, they collect sediment, chlorine, and other contaminants. If they’re not replaced, your system can’t do its job, and the water won’t taste as fresh and clean. Regularly replacing your Water Filters keeps your APEC water filter system producing healthy and clean water. And, Using genuine APEC water filter parts means everything fits perfectly and works the way it should.

Filter Compatibility: Finding the Right APEC RO Filter

One of the biggest questions customers ask is: “Which filters do I need for my system?” The good news is that APEC makes it easy. Use the "Filter Finder" at the top of this page to easily find the right filter for your product. If you’re still not sure, check your user manual or APEC’s compatibility chart. Or, give us a call at: Contact Us

Filter Lifespan & Replacement Schedule


So, how often do you really need to change your filters? It depends on your water's quality and how much you use, but here’s a good starting point:

Sediment & carbon filters: Every 6–12 months

RO membrane: Every 3–5 years

Advanced Coconut Shell Refining Carbon (TCR): Every 3–5 years

If you're unsure of when to change your filter, check your system's user manual or give us a call! Staying on top of this keeps your water crisp, clean, and worry-free.

Troubleshooting Common Issues

Even with new filters, sometimes things don’t go as smoothly as planned. Here are the most common hiccups (and quick fixes):

  • Low water flow: Often means it’s time for a new RO membrane replacement.
  • System keeps draining: Could be a worn auto shut-off valve or you might benefit from a permeate pump to balance water pressure.
  • Bad taste or smell: Usually solved by flushing the system longer or replacing the carbon filter.
  • Leaking faucet or fittings: Check the O-rings and connections
  • Gurgling noises: A little is normal, but loud or ongoing gurgling can mean air in the system or an installation issue.

Finding the Right APEC RO Filter

Use the "Filter Finder" above, review your user manual, or Contact US. Let us find the right filter for your system!

Filter Replacement Schedule

Check your product's user manual for more information or give us a call for a filter replacement plan. General Filters should be replaced annually. Some membranes to be replaced every 3-5 years.

Troubleshooting Common Issues

Some quick fixes include: Checking worn valves for random system drainage. Bad tastes indicate a filter should be replaced. Leaking could be a faulty O-ring or connection.

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