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Aqua Flo 475QC-3 ultrafiltration replacement filter for under-sink drinking water system

Water filtration system

Aqua Flo QCUF 4-Stage Ultrafiltration Replacement Filters

The Aqua Flo Platinum QCUF Drinking Water System is a 4 stage quick change ultrafiltration system that requires no drain line because no waste water is produced. It uses a sediment filter, a carbon block, a hollow fiber UF Membrane, and a GAC Carbon Filter. The system is unique in that it requires no drainline or holding tank, allowing for great tasting and safe water on demand. Due to its quick change system, additional filters may be exchanged for different purposes like scale reduction and pH boosting.

See the replacement schedule

Compatible parts

Everything that fits the Aqua Flo Platinum QCUF 4

Aqua Flo 41407001 quick-change 5-micron sediment filter for QCRO and QCUF systems
Aqua Flo
Aqua Flo 41407001 Sediment Filter Quick Change 5 Micron
(32)
$19.99
Use with Aqua Flo QCRO & QCUF
Aqua Flo 41407002 5-micron carbon block quick-change filter for QCRO and QCUF RO systems
Aqua Flo
Aqua Flo 41407002 Carbon Block Quick Change Filter 5 Micron
(35)
$24.99
Use with Aqua Flo QCRO & QCUF
Featuring a quick connect twist and lock design, the carbon block filter is easy to change making service a snap
Aqua Flo 41407009 1-micron quick-change carbon block filter for compatible QCRO and QCUF systems
Aqua Flo
Aqua Flo 41407009 Carbon Block Quick Change Filter 1 Micron
(2)
$37.49
Use with Aqua Flo QCRO & QCUF
Aqua Flo 41407005 0.2-micron ultrafiltration membrane for QCUF under-sink drinking water systems
Aqua Flo
Aqua Flo 41407005 Ultra Filtration Membrane - No Water Waste
(9)
$45.99
Ultra Fine Filtration
Aqua Flo 41407004 quick-change granular activated carbon filter for compatible QCRO and QCUF systems
Aqua Flo
Aqua Flo 41407004 GAC Carbon Filter Quick Change
(10)
$22.99
Use with Aqua Flo QCUF
Aqua Flo 41407007 quick-change pH booster filter for compatible QCRO and QCUF drinking water systems
Aqua Flo
Aqua Flo 41407007 pH Booster Filter Quick Change
(12)
$45.99
Remineralizes and raises pH of water
Reduces chlorine, taste, and odor

Replacement filter info

Your replacement schedule

Each stage of the Aqua Flo Platinum QCUF 4, the exact part that fits it, and when to change it.

  1. Stage 1: Sediment filter

    Part 41407001, Aqua Flo 41407001 Sediment Filter Quick Change 5 Micron $19.99

    Every 6 months

  2. Stage 2: Carbon block filter

    Part 41407002, Aqua Flo 41407002 Carbon Block Quick Change Filter 5 Micron $24.99

    Every 6 months

  3. Alternative for stage 2: Carbon block filter

    Part 41407009, Aqua Flo 41407009 Carbon Block Quick Change Filter 1 Micron $37.49

    Every 6 months

  4. Stage 3: Ultrafiltration membrane

    Part 41407005, Aqua Flo 41407005 Ultra Filtration Membrane - No Water Waste $45.99

    Every 3 years

  5. Stage 4: Carbon block filter

    Part 41407004, Aqua Flo 41407004 GAC Carbon Filter Quick Change $22.99

    Every 6 months

Manuals & instructions

Manuals and guides

FAQ

Aqua Flo Reverse Osmosis Frequently Asked Questions

How do I replace my Aqua Flo RO filters?
Start by selecting your specific Aqua Flo RO filter system model. From there, you'll be taken to a page that provides manuals or instructions on how to change out the filters for your specific Aqua Flo model. You can also review our general filter replacement instructions.
How often should I replace filters in my Aqua Flo RO water filter system?
Most Aqua Flo RO systems need pre-filters and post-filters replaced every 6–12 months, depending on water quality and household usage. Membranes generally last 2–3 years. You can review compatible filters for each model on the system’s collection page, such as the Aqua Flo Platinum QCRO System or the Aqua Flo E50TFC-3 Economy RO System.
Which Aqua Flo replacement filters are compatible with my system?
Filter compatibility depends on your system model. Each Aqua Flo model page lists the correct sediment, carbon, and membrane replacements. To find the right kit, visit your specific system model page such as the Aqua Flo QCUF Ultra-Filtration System or Aqua Flo Platinum QCRO 4-Stage RO System.
What contaminants will Aqua Flo RO systems remove?

Aqua Flo RO systems, filters and membrane can remove common pollutants from water including pesticides, sulfates, fluoride, nitrates, lead, pharmaceuticals, arsenic and more. The RO system's carbon filter will also remove chloramines and chlorine.

Learn more about what contaminants can be removed with reverse osmosis filtration.

Where Can I Find Aqua Flo RO Owner's Manuals and Installation instructions?

We have a page for each Aqua Flo model on our site. On the page for your specific Aqua Flo RO system, click on the + next to "Manuals and Instructions" to pull up owner's manuals PDFs.

Aqua Flo Platinum QRCO

Aqu Flo QCUF

Aqua Flo Platinum 1240

Economy E50TFC-3

Economy E75TFC-3 

How do I know when it’s time to replace my Aqua Flo water filters?
Reduced flow rate, changes in taste, slow water flowor decreased TDS performance often signal it's time for a water filter replacement. Follow manufacturer guidelines for each model, such as the Aqua Flo E75TFC-3 RO System or Platinum QCRO System. Regular replacement ensures optimal filtration and membrane longevity.
Are Aqua Flo filter replacement kits available for all models?
Each Aqua Flo RO and UF system has compatible replacement kits, including sediment filters, carbon filters, and membranes. Browse all Aqua Flo systems at the main collection page: Aqua Flo RO Collection, or choose your specific model such as the Aqua Flo QCUF UF System
How difficult is it to install Aqua Flo replacement filters?
Aqua Flo water filter systems are designed for quick, straightforward filter replacement—especially QC (quick change) models featuring simple twist-off cartridges. For guidance, refer to your system’s collection page, such as the Aqua Flo QCRO 4-Stage System or the Platinum 1240 RO System. Learn more about how to change your RO filters
What makes the Aqua Flo 475QC-3 3-Stage Quick Change Filter System different from a typical RO system?
The Aqua Flo 475QC-3 Ultrafiltration System uses ultrafiltration (UF) rather than reverse osmosis, meaning it reduces chlorine, taste & odor, VOCs, sediment, and contaminants down to 0.2 microns while retaining beneficial minerals. It also doesn’t require a storage tank or drain line, making it easier to install and maintain compared to traditional RO systems.
What filters are included in the Aqua Flo Platinum QCRO RO Filter Replacement Kit with RO Membrane?
The Aqua Flo Platinum QCRO Filter Replacement Kit includes the sediment prefilter, carbon block prefilter, carbon postfilter, and the compatible RO membrane—all designed specifically for the Aqua Flo Platinum QCRO drinking water system. This complete kit ensures optimal filtration performance, improved taste, and consistent purified water output.

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