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What does a whole-house water filter actually do?
Whole-house filtration

What does a whole-house water filter actually do?

2 November 2026Updated 5 November 20261 min read

A jug filters one glass. A whole-house filter treats your water where it enters your home, so every tap, shower and appliance gets filtered water.

Why filter the whole house?

Geelong's water is treated to make it safe, then travels kilometres of pipe to reach your tap. Chlorine keeps it safe on that journey, and you notice it in a hot shower, the kettle and your coffee. Older mains and house pipes can add sediment and rust along the way.

What changes, room by room

  • Kitchen tap. Cleaner-tasting water straight from the tap.
  • Kettle and coffee. Better tea and coffee, less build-up in your kettle.
  • Shower. Shower without the chlorine smell in the steam.
  • Bath time. Filtered water for the kids' bath.
  • Laundry. Wash in filtered water, not sediment.

Three stages, each with a job

  1. Sediment (5-micron poly-spun). Traps dirt, rust, silt and sand from the pipes.
  2. Carbon + KDF (GAC with KDF 55 & 85). Reduces chlorine, taste, odour and certain metals.
  3. Carbon block (CTO sintered carbon block). Final polish for taste and odour, including chloramine.

All three cartridges are changed every 12 months, and we send you a reminder.

Is it right for your home?

Home Guard suits families who want better water in every room, homes with older pipes or visible sediment, and anyone who can smell chlorine in the shower. It isn't a water softener. If scale is the issue, we'll tell you at the check.

Want the purest water to drink as well? Add Crystal at the kitchen sink.

Book a free water check and we'll test your water at the tap, check your plumbing and give you a fixed written quote.

Written by Austra Team, Geelong.

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