3 Stage Water Filtration System for Whole House Use

Below is a summary of the key technical specifications for the 3 Stage Whole House Water Filtration System.

This information is provided to help confirm suitability for standard residential homes and point-of-entry installations.

System Specifications

• Model: FHWR-3S1-20
• System Type: 3-stage whole house (point-of-entry) filtration
• Filtration Stages: Sediment → Heavy metal & carbon → Limescale & carbon
• Flow Rate: 50–60 L/min
• Operating Pressure: 0.1 – 0.6 MPa
• Operating Temperature: 5°C – 35°C
  Maximum Water Volume: 300,000 litres
  Filtration Accuracy: Up to 1 micron
  Housing Size: 20” × 4.5” (Big Blue format)
  System Dimensions: 74cm (H) × 59cm (W) × 21cm (D)
• Materials: Food-grade plastics & stainless steel

Recommended Filter Lifespan: 12 months (maximum 18 months, depending on water quality)

Filter Replacement Schedule

StageFilter TypeRecommended ChangeMaximum LifespanStage 1Sediment filterEvery 12 monthsUp to 18 monthsStage 2Heavy metal & carbon filterEvery 12 monthsUp to 18 monthsStage 3Limescale & carbon filterEvery 12 monthsUp to 18 months

System Components

Filter HousingsFull-sized 20” × 4.5” food-grade housings with double O-ring sealsFrame & Cover304 stainless steel frame with UV-protected coverConnectorsBrass fittings designed for durability and pressure resistancePressure GaugesStainless steel and glass gauges with UV protectionMountingGround-mounted system with optional back coverSealsDual-layer O-ring design for leak prevention

Compliance & Materials

System materials comply with AS/NZS 4020 standards for potable water components
Designed for use with standard residential plumbing configurations
Compatible with universal 20” × 4.5” replacement cartridges

Important notes

Actual performance and filter lifespan depend on incoming water quality and household usage
This is a supply-only system and must be installed by a licensed plumber
If you’re unsure whether this system is suitable for your home, our team can help before you proceed

Free replacement filters for the first year (valued at $300)

This system uses a 3-stage filtration process designed to improve water quality across the entire home. Each stage targets different issues, from sediment and particles, to chlorine taste and odour, and build-up that can affect plumbing and appliances.

Stage 1 — Sediment Filter

What it targets: rust, dirt, sand and visible particles
Why it matters: helps protect the later filters and keeps water clearer
Best for: households seeing grit or sediment, or wanting better system protection

Stage 2 — Heavy Metal & Carbon Filter (KDF)

What it targets: heavy metals (such as lead and mercury) and helps reduce bacterial growth
Why it matters: supports better water quality and helps improve taste
Best for: households wanting broader filtration beyond just sediment

Stage 3 — Coconut Carbon Block (Limescale & Chlorine)

What it targets: chlorine taste and odour, plus limescale build-up
Why it matters: improves taste and smell while helping reduce scale that can impact plumbing and appliances
Best for: homes wanting better shower comfort and reduced chlorine smell

Replacement timing (simple guide)

Most homes replace cartridges around every 12 months, with a maximum of up to 18 months, depending on incoming water quality and usage.

Free replacement filters for the first year (valued at $300)

To reduce your ongoing costs, this system includes free replacement filters for the first year (valued at $300).

Important: This offer applies to whole house water filtration systems only, not all products.

After the first year, replacement cartridges are standard and readily available, and the system uses a universal housing format.

Need help choosing the right system?

If you’re unsure whether this system suits your home or water conditions, enquire and our team can help before you order.