WFW Compact Twin Water Filter System - Installed Today
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Product Information Quick Specs & Benefits View filtration, certification, contaminant reduction and warranty details
Filtration Type Kitchen
Reduces Dirt, Sand, Silt, Rust, Sediment, Microplastics, Chlorine, Chloramine (partial reduction), Volatile Organic Compounds (VOCs), Pesticides, Herbicides, Industrial Solvents, Some Pharmaceuticals, Chlorine taste & odor, Organic smells, Sulfur compounds (reducing rotten egg smell), Lead (significant reduction), Mercury (significant reduction), Copper (significant reduction), Some arsenic compounds (partial reduction), Chromium 6 (partial reduction), Trihalomethanes (THMs), and Haloacetic acids (HAAs)
Warranty Limited 2 Year
WFW Compact Twin Water Filter System
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COMPACT UNDER-SINK DRINKING WATER FILTRATION

Compact Twin Under-Sink Water Filter System

The Compact Twin Under-Sink Water Filter System is a two-stage drinking-water filtration setup designed for kitchens where cabinet space is limited but separate filtration stages are still preferred.

Rather than relying on one cartridge to perform every treatment function, the twin configuration allows two compatible cartridges to be used in sequence. This gives you the flexibility to combine pre-filtration with a second treatment cartridge selected around the incoming water and the filtration result you require.

The system is intended for point-of-use drinking water at the kitchen rather than whole-house filtration. Exact cartridge media, micron ratings and treatment claims depend on the filter combination selected with the system.

Quick answer: the Compact Twin is a two-cartridge under-sink water filter designed to provide more filtration flexibility than a single-housing system while retaining a compact kitchen-cabinet footprint. Cartridge selection matters: sediment, chlorine, taste, odour, cyst, heavy-metal or other reduction claims should only be applied when the exact filters installed are rated for those functions.
SYSTEM AT A GLANCE

Compact Twin Key Details

2 Stages Separate Cartridges
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Under-Sink Point-of-Use System
Compact Cabinet-Friendly Layout
Configurable Filtration Options
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HOW IT WORKS

Two Filters Working in Sequence

Incoming cold water passes through the first cartridge and then through the second cartridge before being delivered to the filtered-water outlet.

Stage 1 – Pre-Filtration

The first stage can be used to reduce sediment and suspended particulate material before water reaches the second treatment cartridge.

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Stage 2 – Final Treatment

The second stage can use compatible carbon or specialist media selected for the required drinking-water treatment.

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This staged arrangement can be useful where protecting the final treatment cartridge from incoming sediment is preferred over a single-filter configuration.

COMPACT WITHOUT DROPPING THE SECOND STAGE

Two-Stage Filtration for Kitchens with Limited Cabinet Space

The main advantage of a compact twin system is that it retains two separate treatment stages without using the larger footprint associated with some traditional twin-housing arrangements.

This gives the installation more flexibility than a single cartridge while keeping the system focused on one drinking-water outlet rather than treating the entire household supply.

The exact physical size and connection layout should be confirmed against the current system supplied before installation.

STAGE 1

Sediment Pre-Filtration

Where the Compact Twin is configured with sediment filtration first, the opening stage is used to capture suspended material before it reaches the downstream treatment media.

Dirt

Reduces suspended dirt carried through the incoming cold-water supply.

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Rust

Helps capture particulate rust before it reaches the second-stage filter.

Sand & Silt

Provides mechanical filtration for suspended sand, silt and similar particulate material.

Protects Stage 2

Pre-filtration can reduce unnecessary particulate loading on the final treatment cartridge.

Replaceable

The sediment cartridge can be changed independently when its service life is reached.

Micron Rating

Confirm the exact micron rating of the cartridge supplied with your selected configuration.

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STAGE 2

Choose the Final Filtration Stage for the Water You Want to Treat

The second cartridge provides the main final-treatment function and should be selected around the actual water-quality requirement.

Carbon Treatment

A compatible carbon cartridge can be selected for chlorine and unwanted taste or odour reduction.

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Finer Filtration

Where a finer-rated cartridge is selected, additional manufacturer-listed treatment functions may be available.

Specialist Media

Specific claims such as lead, heavy-metal, cyst, PFOS or PFOA reduction require a cartridge specifically rated for those substances.

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FILTER SELECTION MATTERS

Do Not Treat Every Cartridge Combination as the Same Product

A compact twin housing arrangement provides flexibility, but the housings themselves do not determine the reduction performance.

The treatment result depends on:

  • The cartridge installed in stage one
  • The cartridge installed in stage two
  • The micron rating of each filter
  • The media used inside each cartridge
  • The incoming water quality
  • The manufacturer's flow and capacity limits
Always match contaminant claims to the exact cartridges supplied. A standard chlorine-and-taste carbon filter should not inherit the treatment claims of a specialist high-grade cartridge.
CONFIGURATION EXAMPLE

Sediment First, Carbon Second

A common twin-filter arrangement uses sediment filtration as stage one followed by carbon filtration as stage two.

1. Sediment

Reduces suspended particulate matter before water reaches the carbon media.

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2. Carbon

Provides the selected carbon-treatment functions after particulate pre-filtration.

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Do not reverse a cartridge sequence without checking the supplied configuration. The first filter is normally selected to protect or prepare the water for the second stage.
WHAT IT CAN TREAT

Treatment Depends on Your Chosen Filters

Water Concern Possible Treatment Stage Important Check
Dirt, Rust, Sand & Silt Sediment filtration Confirm sediment cartridge and micron rating
Chlorine Compatible carbon filtration Confirm carbon cartridge specification
Unwanted Taste & Odour Compatible carbon filtration Confirm cartridge treatment listing
Heavy Metals Specialist treatment cartridge Not a universal carbon-filter claim
Giardia / Cryptosporidium Cysts Suitable fine-rated cartridge Requires manufacturer-listed cyst reduction
PFOS / PFOA Specialist carbon media Only claim where the exact cartridge is rated
WHAT IT DOES NOT AUTOMATICALLY DO

A Twin Housing Does Not Mean Universal Contaminant Removal

  • It is not automatically a reverse-osmosis system
  • It does not automatically reduce dissolved hardness
  • It does not automatically remove fluoride
  • It does not automatically include an alkaliser
  • It does not automatically reduce every heavy metal
  • It does not automatically provide microbiological disinfection
  • It is not intended as whole-house filtration
  • Its performance depends on the two cartridges selected
TDS METERS

Do Not Use TDS Alone to Decide When Carbon Filters Are Exhausted

A conventional sediment-and-carbon filter is not designed to remove all dissolved mineral content from water in the way reverse osmosis does.

For that reason, a TDS reading should not be treated as the primary indicator of whether a sediment or carbon cartridge needs replacing.

Cartridge service should instead follow the manufacturer's applicable capacity or replacement guidance and consider water usage, incoming water conditions, flow restriction and the return of the treatment issue the cartridge is intended to address.

SINGLE VS COMPACT TWIN

Why Choose Two Cartridges?

Feature Single Under-Sink Compact Twin
Cartridge Positions 1 2
Separate Pre-Filtration Not automatically Can be configured as a dedicated first stage
Final Treatment Stage Same cartridge performs main treatment Separate second cartridge
Cabinet Space Lowest requirement More space required than a single system
Configuration Flexibility One cartridge Two different media stages can be combined
WHO IS IT FOR?

When a Compact Twin May Be Suitable

  • You want filtered drinking water at the kitchen
  • You prefer two separate filtration stages
  • You want sediment filtration before a final treatment cartridge
  • You have limited but usable cabinet space
  • You want replaceable cartridges rather than whole-house filtration
  • You want flexibility in the cartridge combination
  • You have an accessible cold-water connection
  • You can provide room for future servicing
INSTALLATION REQUIREMENTS

What the Compact Twin Installation Needs

  • Suitable under-sink cabinet space
  • Accessible cold-water plumbing
  • Serviceable water isolation
  • Suitable filtered-water outlet
  • Clearance for cartridge replacement
  • Accessible tubing and fittings
  • Sound existing plumbing
  • Space for any optional additional treatment component
FILTERED-WATER OUTLET

Dedicated Tap or Compatible Mixer Arrangement

An under-sink filtration system needs a suitable outlet for the treated water.

Depending on the package and kitchen setup, this may be a dedicated filtered-water tap or a compatible multi-function mixer designed with a separate filtered-water pathway.

The tap or mixer supplied should be confirmed at the time of ordering rather than assumed to be included with every filtration-only package.

INSTALLATION OPTIONS

Supply Only or Professional Installation

Supply Only

Order the Compact Twin system for delivery to supported Australian locations where you already have a suitable installation arrangement.

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Choose Your Filters

Select the cartridge combination that matches the incoming water and the treatment functions required.

Supply & Installation

Professional under-sink installation may be available in eligible Brisbane and Gold Coast service areas, subject to cabinet access and existing plumbing.

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INSTALLATION CONSIDERATIONS

What May Be Additional?

A standard filtration installation assumes suitable existing cold-water plumbing and accessible cabinet space.

Depending on the kitchen, additional work may be required for:

  • Major pipework alterations
  • Replacement of faulty existing isolation valves
  • Relocation of plumbing
  • Major cabinet modifications
  • Stone or specialist benchtop drilling where not included
  • Changing to a different kitchen mixer
  • Adding extra filtration stages
  • Repairing unrelated existing leaks or plumbing faults
MAINTENANCE

Both Cartridges Are Service Items

The Compact Twin is not maintenance-free. Each cartridge has a finite treatment capacity and should be replaced according to the guidance for the exact filters installed.

Stage 1

Sediment filters can load faster where the incoming supply contains higher levels of suspended particulate material.

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Stage 2

Carbon and specialist cartridges have service limits based on media capacity, water quality and total usage.

Seals & Fittings

Housing seals, tubing and accessible connections should be checked whenever the system is serviced.

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SERVICE PROCESS

What Is Involved in a Filter Change?

  • Confirm the two replacement cartridge models
  • Confirm the correct filtration sequence
  • Turn off the applicable cold-water supply
  • Release pressure through the filtered-water outlet
  • Remove the existing cartridges according to the system design
  • Inspect accessible seals and connections
  • Install stage one in the correct position
  • Install stage two in the correct position
  • Reassemble all connections correctly
  • Restore the water supply gradually
  • Flush the new cartridges according to their instructions
  • Check the complete system for leaks
  • Confirm normal filtered-water flow
WHEN TO CHANGE THE FILTERS

Replacement Depends on the Cartridges Installed

A generic 3–12 month or 6–12 month replacement period should not automatically be applied to every Compact Twin cartridge combination.

Practical service life can depend on:

  • Manufacturer replacement guidance
  • Cartridge treatment capacity
  • Incoming sediment levels
  • Chlorine or other treatment demand
  • Daily drinking-water consumption
  • Reduction in filtered-water flow
  • Known service history
  • Changes in the incoming water supply
OPTIONAL ADD-ONS

Additional Treatment Can Be Considered Where Compatible

Additional drinking-water treatment should only be added where the system, available space and plumbing arrangement are compatible.

Mineralisation

A compatible mineralisation cartridge can be considered where mineral addition or pH adjustment is specifically wanted.

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Alternative Carbon Media

A specialist final cartridge may be selected where its manufacturer-listed reduction capabilities better match the water concern.

Different Tap Arrangement

A dedicated drinking-water tap or compatible three-way mixer can be selected according to the kitchen layout.

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BEFORE ORDERING

Check These Details First

  • You want point-of-use drinking-water filtration
  • You prefer two separate cartridge stages
  • You have selected the required filter combination
  • You have enough cabinet space for the system and servicing
  • A suitable cold-water connection is available
  • You have confirmed the filtered-water tap or mixer arrangement
  • You understand treatment claims depend on the cartridges selected
  • You have allowed for any optional additional treatment stage
COMMON QUESTIONS

Questions About the Compact Twin Water Filter System

How Many Filters Does It Use?

Two. The Compact Twin provides two separate cartridge positions so different treatment functions can be used in sequence.

Is It a Whole-House Filter?

No. It is designed for under-sink point-of-use drinking-water filtration.

What Should Go in the First Stage?

A sediment cartridge is a common first-stage choice because it reduces suspended particulate material before the final treatment cartridge.

What Goes in the Second Stage?

The second stage depends on the selected configuration and can use compatible carbon or specialist treatment media.

Does It Remove Chlorine?

It can where the installed carbon cartridge is specifically rated for chlorine treatment.

Does It Remove Heavy Metals?

Only where the installed treatment cartridge is specifically rated for the relevant metals. This should not be assumed for every Compact Twin configuration.

Does It Remove Bacteria?

A general Compact Twin configuration should not automatically be described as providing bacterial disinfection. Specific microbiological claims require a cartridge or treatment technology rated for that purpose.

Does It Reduce Giardia or Cryptosporidium?

Only where the exact cartridge selected has a manufacturer-listed cyst-reduction specification.

Can I Choose Different Filters?

The main advantage of a twin system is the ability to combine compatible filtration stages. Cartridge dimensions and system compatibility still need to be confirmed before changing the supplied configuration.

Should I Use a TDS Meter to Know When the Filter Needs Changing?

No. A standard sediment-and-carbon system may leave normal dissolved mineral content largely unchanged, so TDS alone is not an appropriate indicator of carbon cartridge exhaustion.

How Often Should the Filters Be Changed?

Follow the replacement guidance for the exact cartridges installed. Usage, incoming water and cartridge capacity all affect service life.

Can I Add an Alkaliser?

A compatible mineralisation or alkaliser stage may be possible where the plumbing arrangement and available cabinet space allow it.

Is Professional Installation Required?

The installation needs a suitable cold-water connection, reliable isolation and correctly connected fittings. Professional installation may be appropriate where plumbing alteration, tap installation or cabinet work is required.

Can Installed Today Install It?

Professional under-sink filtration installation may be available in eligible Brisbane and Gold Coast service areas where the existing plumbing and cabinet access are suitable.

Can I Order It Without Installation?

Yes. Supply-only ordering is available for supported Australian delivery locations.

Does It Include a Filter Tap?

Tap and mixer inclusions can vary by package. Confirm the exact configuration selected when ordering.

WHY INSTALLED TODAY

Choose the Filter Combination, Then Choose How You Want It Supplied

Supply Only Available

Purchase the Compact Twin without installation where you already have a suitable installer or servicing arrangement.

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Configurable Filtration

Two separate filter positions allow the system to be configured around the actual treatment requirement rather than relying on one universal cartridge claim.

Installation Capability

Installed Today can also support eligible local installations where cabinet space, existing cold-water plumbing and the selected filtration arrangement are suitable.

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FINAL CHECK

Is the Compact Twin Under-Sink Water Filter System Right for Your Kitchen?

The Compact Twin Under-Sink Water Filter System is designed for customers who want two-stage drinking-water filtration while keeping the installation relatively compact beneath the kitchen sink.

Using two separate cartridge positions means the system can be configured with sediment pre-filtration followed by carbon or another compatible final treatment stage. The exact contaminant-reduction performance comes from the cartridges selected, not simply from the fact that the system has two filters.

Before ordering, confirm your required treatment functions, the exact cartridge combination, available cabinet and servicing space, cold-water connection and filtered-water outlet arrangement. Where a specific contaminant such as lead, heavy metals, PFOS, PFOA or filterable cysts is a concern, choose a cartridge with the corresponding manufacturer-listed reduction specification rather than relying on a generic carbon-filter claim.

Buying a new hot water system, water filter, pump or plumbing product should be simple. Installed Today helps you compare the product, the supply-only price and the available installation options in one place, so you can choose what suits your home, budget and timing without the back and forth.

Whether you already know exactly what you need or you are still comparing options, we make it easier to order with confidence.

Why Customers Choose Installed Today

Supply Only or Installed Options

Choose the product on its own, or add installation where available. This gives you the flexibility to buy the way that suits you best.

Clear Pricing Before Checkout

See your product price upfront, then add the installation options or common extras you need before placing your order. No confusing quote forms just to understand your starting price.

Product Details That Actually Help

Key specs, sizing details, warranty information, product features and suitability notes are shown clearly, so you can compare products properly before you buy.

Installation Add-Ons Available

Where relevant, you can add common installation extras such as valve kits, bases, electrical options, removal, access-related items or other site-specific upgrades before checkout.

Built Around Brisbane and Gold Coast Homes

Our product and installation options are selected with common local homes, water quality, plumbing layouts, access issues and replacement requirements in mind.

One Simple Order

Add the product and selected extras to cart in one order, instead of trying to organise separate suppliers, installers and parts.

Practical Help Before You Buy

Not sure which product, size or installation option is right? Installed Today gives you a clearer path to choosing the right system before you order.

Designed To Make Your Decision Easier

Installed Today is built for customers who want a faster, clearer and more convenient way to buy.

Instead of guessing what is included, waiting for basic pricing or trying to work out which extras are needed, you can review the product, compare your options and move forward with confidence.

Choose supply only if you just need the product.

Choose supplied and installed if you want the product installed where available.

Add common extras before checkout if your job needs additional parts or site-specific options.

It is a simpler way to organise the product and the parts of the job that matter most.

Important Note

Installation availability, inclusions and add-ons vary by product type, site access, existing services, selected options and your property requirements. Some installations may require additional work, upgrades or checks before the job can proceed.

Fast & Reliable Delivery – What to Expect

Same Day Delivery: Available in Brisbane and Gold Coast on select units ordered before 8:00am
Express Delivery: 1–4 business days
Standard Delivery: 2–8 business days

Same Day Delivery

Same day delivery is available for selected hot water systems in Brisbane and Gold Coast metro areas when ordered before 8:00am, subject to stock availability, delivery capacity and suitable transport conditions.

Fast Metro Delivery

Most hot water orders in metro areas are delivered quickly, with around 90% arriving within 1 business day.

Weather Delays

Hot water systems cannot always be transported safely by courier during rain. Delivery timeframes may be affected when wet weather impacts safe handling, loading, unloading or transport conditions.

Express Delivery Guarantee

If your express delivery order takes longer than 1–4 business days, we will adjust the delivery timeframe to our standard 2–8 business days and refund your express shipping charge automatically.

Order Tracking

We will send your delivery details as soon as your order has been dispatched.

Need help with your delivery? Contact our team and we’ll be happy to assist.

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