Delivered quickly and they were easy to replace.
Product and service amazing.
Great Awesome Deals! Fast Shipping Across Australia!
Great Awesome Deals! Fast Shipping Across Australia!
If your flow has dropped, your water looks a little cloudy, or the taste and smell isn’t as pleasant as it used to be, it’s usually time to check your cartridge. This collection of whole house water filter replacement cartridges is designed to make it easy to match the correct size, micron rating, and filter media for Australian homes and small workplaces. A whole-house system filters water at the point where it enters your property, before it reaches taps, showers, and appliances. Replacement cartridges generally fall into a few practical types: Micron rating tip: a higher micron rating generally targets larger particles and can feel better for flow. A finer micron rating can capture smaller particles but may clog sooner in high-sediment water. Safety first: turn off the water supply and relieve pressure before opening the housing. If you’re unsure, use a qualified plumber. Replacement timing: follow the guidance for your specific cartridge and pay attention to practical signs like reduced flow, taste/odour changes, or visible sediment. Water quality and usage vary across Australia, so there’s no single “perfect” schedule. Need the full setup, not just a cartridge? Explore our whole house filtration systems. For other cartridge types across the store, browse replacement water filter cartridges. If you’re comparing replacement timing across products, see our replacement water filter cartridges guide. Still not sure what you’ve got installed? Contact our team with a photo of your current cartridge and housing. For general, Australia-wide context on drinking water management (not product performance), you can refer to the Australian Drinking Water Guidelines (NHMRC) and the overview on Water Quality Australia. Awesome Water Filters supports Australian customers with practical, no-pressure product guidance. Checkout is secure, and you can review our delivery and policy information any time on our Shipping | Return | Refund & Warranty page. If you need help matching a cartridge, contact us and include a photo of your current filter and housing. Last revised: December 2025 External references: NHMRC – Australian Drinking Water Guidelines; Water Quality Australia – Drinking water guidelines overviewFind the right whole house replacement cartridge (without guesswork)
Key benefits
How it works
What you’ll find in this collection
Choose the right replacement cartridge
Simple comparison guide
Cartridge type
Best for
What to watch
Sediment (polyspun)
Everyday particle capture; simple swaps
Can clog faster in high-sediment water
Sediment (pleated / washable)
Higher dirt-holding; rinse-clean convenience
Needs routine cleaning; not ideal for every setup
Carbon block (e.g., coconut carbon)
Improving chlorine taste/odour
May reduce flow when nearing end of life
Anti-scale options
Scale-related comfort and convenience
Results vary depending on water chemistry and usage
Installation & maintenance
Learn more
FAQs
The quickest method is to remove your current cartridge and match the length and diameter. Many cartridges also have the size printed on the label. If you’re stuck, send a photo to our team and we’ll help you narrow it down.
“Big Blue” usually refers to a larger diameter whole-house housing that takes 10" x 4.5" cartridges. The extra size can help with flow and capacity, but you still need to match the exact size your housing accepts.
It depends on your goal. Coarser filters (like 20 micron) target larger particles and often feel better for flow. Finer filters (like 5 micron) capture smaller particles but may clog sooner if your water has lots of sediment.
Activated carbon is commonly used to improve chlorine taste/odour in mains water. Results depend on cartridge type, your water supply, and how close the cartridge is to end of life.
Many households use sediment stages to manage visible particles in tank water. If you have specific concerns about water safety, consider testing your water and seek professional advice on the right treatment approach for your system.
Many homeowners replace cartridges themselves, but you should only do so if you’re comfortable turning off water, relieving pressure, and resealing the housing correctly. If you’re unsure or you notice leaks, use a qualified plumber.Trust & Support
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Delivered quickly and they were easy to replace.
Product and service amazing.



