Replacement Filters for the APEC RO-90 Ultimate (5-Stage) Reverse Osmosis System
APEC · 5-Stage Reverse Osmosis
Replacement Filters for the APEC RO-90 Ultimate (5-Stage) Reverse Osmosis System
Every filter your system needs — stage by stage — using IPW house-brand cartridges that fit the standard 10" housings and cost a fraction of the OEM parts.
Also fits: APEC RO-90 · RO-90 · APEC Ultimate RO-90
✓ Standard 10" cartridges — guaranteed to fit
APEC RO-90 Ultimate (5-Stage) Replacement Filters
This system uses standard 10" cartridges and an 1812 membrane. Pick the exact part for each stage below.
Filters by stage
Replace each stage with the exact IPW part below.
1
Sediment pre-filter
5µm polypropylene · 10" × 2.5"
IPW 5M-SED-10×2.5 — $3.50
Replaces genuine OEM: APEC 1-SED10
2
Carbon block
coconut carbon block · 10" × 2.5"
IPW CBC-10-5 carbon block — $8.99
Replaces genuine OEM: APEC 23-CAB10
3
Carbon block (2nd)
coconut carbon block · 10" × 2.5"
IPW CBC-10-5 carbon block — $8.99
Replaces genuine OEM: APEC 23-CAB10
4
RO membrane
100 GPD TFC (OEM 90 GPD — closest universal)
Replaces genuine OEM: APEC MEM-90
5
Inline post-carbon polish
10" × 2" coconut GAC inline · ¼" quick-connect
Replaces genuine OEM: APEC 5-TCR-QC
When to replace
🪣 Sediment & carbon: every 6–12 months🥤 Inline post-filter: every 12 months💧 RO membrane: every 2–3 years
✓ Guaranteed to fit your APEC RO-90 Ultimate (5-Stage) — standard 10" cartridges & 1812 membrane.
Not sure this is your system? Use the Isopure Water Filter Finder → Match by system name, by the part number printed on your current filter, or by snapping a photo.
APEC RO-90 Ultimate filter FAQ
What filters does the APEC RO-90 use?
Five stages: a 5 micron sediment filter (APEC 1-SED10), two 10" × 2.5" carbon blocks (23-CAB10), a 90 GPD membrane (MEM-90) and a 10" inline coconut carbon post-filter with ¼" quick-connects (5-TCR-QC).
Do the RO-90 and RO-PERM use the same filters?
Yes. APEC lists the same MEM-90 membrane and FILTER-MAX90 filter set for both. The RO-PERM just adds a permeate pump that cuts waste water and fills the tank faster.
How often should I change the filters?
Change the sediment and both carbon blocks every 6 to 12 months and the inline post-filter about once a year. The membrane usually lasts 2 to 3 years, or until water quality drops.
Can I use a 100 GPD membrane instead of the 90 GPD MEM-90?
Yes. The PureT TFCK-1812-100 is a standard 1812 thin-film element that fits the same membrane housing. Real output depends on your water pressure and temperature. Questions? Call (714) 541-6600.
All replacement filters by system · APEC RO-PERM Ultimate · APEC RO-PH90 Ultimate pH+ · APEC RO-45 Ultimate · Reverse osmosis membranes
Compatibility reference only. Photos of complete systems shown on this page are provided to help you identify your unit and confirm that our filters fit. All brand names, model numbers, and product images are the property of their respective owners; Isopure Water (IPW Industries Inc.) is not affiliated with, sponsored by, or endorsed by these manufacturers. We sell compatible replacement filters and parts — not the branded systems pictured, unless a system is separately listed for sale on our store.
