The best whole-house water filters in Australia
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A whole-house filter treats every tap, shower and appliance. Here is when that makes sense in Australia, what a plumber will need, and the two-stage system we would start with.
Our picks at a glance
| Pick | Product | Stages | Install | Price* |
|---|---|---|---|---|
| Best value | Geekpure 2-stage whole house filter, 10 inch big blue housings | Sediment (PP) then carbon | On the mains inlet, licensed plumber | $175 |
A whole-house (point-of-entry) filter sits on the main water line and treats everything: showers, laundry, hot water system, every tap. It is the right answer to a small number of problems and an expensive answer to the rest.
When whole-house makes sense
- Tank, bore or dam water. Sediment and organics everywhere, and you want to protect the hot water system, washing machine and every tap, not just the kitchen. This is the main Australian use.
- Heavy chlorine on mains water where you want it out of every shower and the laundry, not just the drinking tap.
- Known sediment or rust from old mains clogging aerators and appliances.
For drinking-water taste alone, a kitchen filter does the job at a tenth of the cost.
What goes in it
Stage one is a sediment cartridge, typically 5 micron (or 20 micron on very dirty water, followed by 5). Stage two is carbon for chlorine, taste and organics. Big-blue 4.5 x 10 inch housings are the standard, they use 1 inch ports so they do not choke the house flow, and cartridges in that size are made by everyone. Tank households drinking the water should still add a fine filter at the kitchen tap, and UV disinfection if the tank is the only source.
Installation
This is mains plumbing: licensed plumber, WaterMark housings, and ideally a bypass loop so you can change cartridges with the water still on. Expect the plumber to cost more than the filter.
The pick
The Geekpure 2-stage is a straightforward sediment-plus-carbon system in standard housings for $175, which makes it the cheapest sensible entry point. Puretec’s Hybrid series is the Australian-made premium equivalent and worth a look if you want local support; we have not captured a price for it yet.
The picks in detail
Geekpure 2-stage whole house filter, 10 inch big blue housings
$175 at amazon.com.au · checked 12 Sep 2026
Sediment then carbon in standard 4.5 x 10 inch big-blue housings with 1 inch ports, so cartridges are cheap and everywhere.
- Stages: Sediment (PP) then carbon
- Housing: 4.5 x 10 inch big blue, 1 inch ports
- Install: On the mains inlet, licensed plumber
Pros
- Protects every tap, appliance and shower in the house
- Standard big-blue cartridges are cheap and everywhere
Cons
- Plumber install is a few hundred dollars on top
- Does not remove fluoride or dissolved solids
- Check WaterMark before installing on mains
Frequently asked questions
Does a whole-house filter remove fluoride?
No. Whole-house systems are sediment and carbon. Fluoride removal at whole-house scale is impractical; fit a reverse osmosis system at the kitchen tap instead.
Do I need a whole-house filter on town water?
Usually not. Town water is already treated, and a kitchen filter handles taste. The case for whole-house on mains water is chlorine reduction in showers across the whole home, or protecting appliances where sediment is a known problem.
What size whole-house filter do I need?
Match the flow rate to the house. Standard 10 inch big-blue housings with 1 inch ports suit most homes; 20 inch housings double the cartridge life and are worth it on tank water with heavy sediment.
Can I install a whole-house filter myself?
It connects to the mains inlet, so it is licensed plumbing work in most states and the housings should be WaterMark certified. Budget for a plumber and, on tank water, a bypass valve so you can change cartridges without shutting the house down.