Reverse Osmosis Replacement Cartridges – RO Filter Cartridges Australia

Why Replace RO Cartridges on Schedule?

• Clogged pre-filters reduce flow and put extra strain on the RO membrane, shortening its life
• An exhausted post-filter allows taste and odour to return to your purified water
• A degraded RO membrane reduces contaminant rejection rates — including fluoride, heavy metals and dissolved solids
• Regular replacement maintains the up-to-99% contaminant removal your system was designed to deliver

RO Cartridge Replacement Schedule

• Sediment pre-filter: every 6–12 months
• Carbon block pre-filter: every 6–12 months
• RO membrane (TFC): every 2–3 years depending on water quality and usage
• Post-carbon filter: every 6–12 months
• Alkaline/remineralisation stage (where fitted): every 12 months

Replace sooner if you notice a drop in flow, a change in taste, or if your TDS meter shows rising dissolved solids in the output water. Use our Replacement Filter Cartridges Guide for full intervals.

What’s in This Collection

• Sediment pre-filters — protect the RO membrane from particulate matter and rust
• Carbon block pre-filters — remove chlorine and chloramines that would damage the TFC membrane
• TFC RO membranes — the core filtration stage, 0.0005-micron pore size for up to 99% contaminant removal
• Post-carbon filters — polish the final water quality for great taste
• Alkaline/remineralisation cartridges — for systems with a mineral stage (where listed)

Related Collections

• Reverse Osmosis Systems
• All Replacement Water Filter Cartridges
• Under Sink Water Filters

FAQs

• How do I know which RO cartridge fits my system? Match by stage (pre-filter, membrane, post-filter) and cartridge size. Check your system manual or the product listing for compatibility. If unsure, contact us with your system model and we’ll help confirm the right cartridge.
• How often should I replace the RO membrane? Every 2–3 years for typical household use. Replace sooner if your TDS meter shows rising dissolved solids in the output water, or if flow drops significantly.
• What happens if I don’t replace the pre-filters on time? Clogged pre-filters reduce flow and allow chlorine to reach the RO membrane, which can permanently damage it. Replacing pre-filters on schedule protects your membrane investment.
• Do I need a plumber to replace RO cartridges? Most RO cartridge changes are DIY-friendly using the quick-change fittings on compatible systems. If you’re unsure, see our professional installation via Airtasker.
• What is a TFC membrane? TFC stands for Thin Film Composite — the industry-standard RO membrane material with a pore size of 0.0005 microns, capable of removing up to 99% of dissolved contaminants including fluoride, heavy metals, bacteria and viruses.

Trust & Support

Awesome Water Filters is Australian-owned and operated, based in Charlestown NSW. 4.9★ average rating from over 270 verified customer reviews. Secure checkout, fast national shipping. Call 1800 789 781 or use our customer request form. Delivery, returns and warranty: Shipping | Return | Refund | Warranty.

External references: NHMRC – Australian Drinking Water Guidelines