A shower filter fits between your shower arm and showerhead. A whole house water filter costs $500 to $3,000+, plus installation. They solve different problems. One filters your shower water. The other filters every tap in your home.
Most Australians with hard water or chlorine concerns start with a hard water shower filter. It’s the fastest fix. Dry skin and dull hair from showering are the main complaints in hard water areas.
This guide covers what each option does, what it costs, and who it’s right for.
What Each Option Does
Shower filter
A shower filter sits between your shower arm and your showerhead. It reduces chlorine, heavy metals, sediment, and VOCs before the water hits your skin. It doesn’t filter your kitchen tap or your bath. Just the shower.
Read our guide on how a shower filter works to see what each stage does.
Whole house water filter
A whole house filter connects to your main water supply line. All water in the home passes through it first. That covers showers, baths, kitchen taps, laundry, and dishwasher. It’s a plumbing job. An installer needs to cut the main line and fit the filter housing.
Cost Comparison
| Shower Filter | Whole House Filter | Whole House Softener | |
|---|---|---|---|
| Upfront cost | Shower filter | $500–$3,000+ | $1,500–$4,000+ |
| Installation | None | Plumber required | Plumber required |
| Ongoing cost | Cartridge replacement | Varies by system | Salt + servicing |
| DIY-friendly | Yes | No | No |
| Rental-safe | Yes | No | No |
The whole house options cost 10 to 50 times more. They also need a plumber to install. For renters, they’re not an option. Most rental agreements don’t allow changes to the main plumbing.
Who Is Each One Right For?
A shower filter is right for you if:
- You’re a renter. You can’t change the plumbing.
- You own your home but the main problem is your skin and hair from showering.
- You want a fast fix. The POWERBOX™ filter installs in five minutes.
- You’re testing whether filtered water makes a difference before spending more.
- Your budget is under $50.
A whole house filter makes sense if:
- You own your home and you want filtered water at every tap.
- You want to filter drinking water and shower water in one system.
- You want to protect appliances: dishwasher, hot water system, washing machine.
- You’re doing a renovation and can include the plumbing work at the same time.
- You have a family with high water use across multiple bathrooms.
A whole house softener makes sense if:
- You have very hard water and want to protect your entire home’s plumbing.
- You want the softest possible water for all uses.
- You’re prepared for ongoing salt costs and annual servicing.
Read our water softener vs filter guide for a full technology comparison.
The Most Common Starting Point
Most people start with a shower filter. It solves the main problem quickly. No plumber. No waiting. You see results in days, not weeks.
If you later decide you want whole-home filtration, a shower filter doesn’t stop you. You can have both. Some homeowners run both. The whole house system handles the main supply. The shower filter adds an extra layer at the shower.
A shower filter is not a compromise. It’s the right tool for the specific job of improving your shower water. A whole house filter is a different tool for a different job.
Which Cities Need Filtration Most?
Perth and Adelaide have the hardest water in Australia. Perth’s northern suburbs can reach over 200 mg/L. Adelaide’s northern suburbs sit above 120 mg/L.
Sydney and Brisbane have soft water. Filtration is less urgent there. The main benefit in those cities is chlorine and smell reduction rather than hardness.
Melbourne varies. Eastern suburbs have soft water. Western suburbs are moderately hard.
A shower filter makes the most difference in Perth and Adelaide. But it helps with chlorine and water feel anywhere in Australia.
Ready to Start?
The POWERBOX™ shower filter for hard water comes with two cartridges. No tools, no plumber, five-minute install.
Comparing options? Read our guide to the best shower filter in Australia.
FAQ
What is the difference between a shower filter and a whole house water filter?
A shower filter fits between your shower arm and showerhead. It filters only the water in your shower. A whole house filter connects to your main supply line and filters all water in the home: every tap, bath, and appliance. A whole house system costs 10 to 50 times more and needs a plumber.
Is a shower filter worth it if I have a whole house filter?
Yes. A shower filter adds an extra layer of filtration at the shower specifically. Some homeowners use both. The whole house system handles sediment and general chlorine. The shower filter targets water that contacts skin and hair directly.
Can renters install a whole house water filter?
No. Whole house filters need a plumber to cut the main supply line. Most rental agreements don’t allow this. A shower filter is the right option for renters. It screws on and off without any plumbing work.
How much does a whole house water filter cost in Australia?
Entry-level whole house filters start around $500 to $1,000 for the unit plus installation. Mid-range systems cost $1,500 to $3,000+. Whole house salt-based softeners run $1,500 to $4,000+ plus ongoing salt costs. A shower filter has no installation cost.
Should I get a shower filter or whole house filter first?
Start with a shower filter. It’s the fastest and cheapest fix. It targets dry skin and dull hair from showering. If you later want filtered water at every tap, you can add a whole house system. The two work independently.