★★★★★ Serving 60,000+ customers with 6,200+ five star reviews.
FILTER FINDER

What system do you have?

Brand
Select your brand...
Model
Select your model...

Axeon RF-4000

Reverse osmosis system

Axeon RF-4000 4-Stage RO Replacement Filters

The Axeon RF-4000 series features 4 stages with various gallons per day available depending on the selected membrane. To find the required membrane for your RF-4000 model, look at the Gallon Per Day (GPD) Flow Rate on the outside of the membrane housing, then select the membrane that most closely matches your listed flow rate.

See the replacement schedule

Compatible parts

Everything that fits the Axeon RF-4000

Ready Water RW-SED2510050 5-micron sediment filter, direct replacement for 93023 and PX05-9 7/8
Ready Water
Ready Water RW-SED2510050 Sediment Filter 5 Micron 2.5" x 10"
(89)
$8.99$12.99
Meets FDA requirements for food and beverage contact
AXEON SDF-25-1005 5-micron sediment filter, 2.5 x 10 inch, part 200621
AXEON
AXEON SDF-25-1005 Sediment Filter 5 Mic 2.5" x 10" 200621
(3)
$7.99$9.99
Filter Fine Sand, Dirt, & Rust Reduction
Omnipure OMB934-10m 10-micron carbon block filter, 2.5 x 10 inch
Omnipure
Omnipure OMB934-10m Carbon Block Filter, 2.5 x 10 Inch
(32)
$13.99$17.49
Reduces chlorine, taste and odor
NSF 42 Certified
AXEON CBF-25-1010 10-micron carbon block filter, 2.5 x 10 inch, part 200658
AXEON
AXEON CBF-25-1010 Carbon Block Filter 10 Microns, 200658
(5)
$13.99$17.49
Certified by NSF to Standard 42
Reduces chlorine, taste and odor
AXEON TF - 1812 - 50 Reverse Osmosis Membrane 50 GPD 200359 200359 - ESP Water
AXEON
AXEON TF-1812-50 Reverse Osmosis Membrane 50 GPD 200359
(10)
$44.49$53.64
Thin Film Composite (TFC)
AXEON TF-1812-25 25 GPD thin-film composite reverse osmosis membrane, part 200357
AXEON
AXEON TF-1812-25 Reverse Osmosis Membrane 25 GPD, 200357
(20)
$37.49$44.09
Thin Film Composite (TFC)
NSF 58 Certified
AXEON TF-1812-25 25 GPD thin-film composite reverse osmosis membrane, part 200357
Pentair
AXEON 200360 TFC-1812-75 Reverse Osmosis Membrane 75 GPD
(9)
$48.99$58.07
Thin Film Composite (TFC)
NSF 58 Certified
Thin-film composite reverse osmosis membrane for compatible residential RO systems
Pentair
AXEON 200361 TF-1812-100 Reverse Osmosis Membrane 100 GPD
(2)
$58.99$68.51
Thin Film Composite (TFC)
AXEON TF - 1812 - 35 Reverse Osmosis Membrane 36 GPD, 200358 200358 - ESP Water
AXEON
AXEON TF-1812-35 Reverse Osmosis Membrane 36 GPD, 200358
(3)
$43.49$51.32
AXEON 200654 ILF - 2010 - 14 - GAC Inline Carbon Filter 200654 - ESP Water
AXEON
AXEON 200654 ILF-2010-14-GAC Inline Carbon Filter
(0)
$25.99$28.73
Design Eliminates Channeling, By-pass and Reduces Release of Carbon Fines
Omnipure CL10ROT33-BB 5-micron inline GAC carbon filter with 1/4-inch female threads
Omnipure
Omnipure CL10ROT33 Inline Carbon Filter GAC 5 Mic 2" x 10"
(62)
$12.99$16.24
Reduces chlorine, taste and odor
NSF 42 Certified
Select an option
Reverse osmosis maintenance kit with filter wrench, sanitizer packet, O-rings and silicone lubricant
ESP Water
RO Maintenance and Sanitizing Kit for Most Standard RO Systems
(26)
$18.94

Replacement filter info

Your replacement schedule

Each stage of the Axeon RF-4000, the exact part that fits it, and when to change it.

  1. Stage 1: Sediment filter

    Part RW-SED2510050, Ready Water RW-SED2510050 Sediment Filter 5 Micron 2.5" x 10" $8.99

    Every 6–12 months

  2. Alternative for stage 1: Sediment filter

    Part 200621, AXEON SDF-25-1005 Sediment Filter 5 Mic 2.5" x 10" 200621 $7.99

    Every 6–12 months

  3. Stage 2: Carbon block filter

    Part OMB934-10m, Omnipure OMB934-10m Carbon Block Filter, 2.5 x 10 Inch $13.99

    Every 6–12 months

  4. Alternative for stage 2: Carbon block filter

    Part 200658, AXEON CBF-25-1010 Carbon Block Filter 10 Microns, 200658 $13.99

    Every 6–12 months

  5. Stage 3: RO membrane

    Every 2 years

  6. Stage 4: Carbon block filter

    Part 200654, AXEON 200654 ILF-2010-14-GAC Inline Carbon Filter $25.99

    Every 6–12 months

  7. Alternative for stage 4: Carbon block filter

    Part CL10ROT33-BB, Omnipure CL10ROT33 Inline Carbon Filter GAC 5 Mic 2" x 10" $12.99

    Every 6–12 months

Manuals & instructions

Manuals and guides

Focused on What Matters

Team of Trained and
Experienced Specialists
Live US-Based
Support Team
Top Rated
Service
Free Fast Shipping
On Orders $99+