GW Multi-Round Replacement Filter Packs | GW4, GW5, GW7 & GW9

GW Multi-Round Replacement Filter Packs

are designed for Greenfield Water Solutions’

legacy GW4, GW5, GW7, and GW9

whole home filtration systems.

These replacement packs allow you to

maintain your existing Multi-Round

filtration system with your choice

of AquaMetix® or

KDF55 filtration media.

Each option provides specialized

water treatment, with different

contaminant reduction capabilities

to suit your household’s

water quality priorities.

Simply select the filter type

and system configuration that

matches your needs from the

dropdown menu before adding

to your cart.

IMPORTANT: CHOOSE YOUR SYSTEM SIZE

The numbers in GW4, GW5,

GW7, and GW9 refer to

the number of filters

included in your system.

Select the replacement pack

that matches your existing

Multi-Round system:

• GW4: 4 replacement filters

• GW5: 5 replacement filters

• GW7: 7 replacement filters

• GW9: 9 replacement filters

Not sure which system

you have? Send our team

a photo of your setup

and we’ll gladly help

identify the correct

replacement pack.

Choose Your Filtration Media

Two filtration options

are available for

compatible GW Multi-Round

systems.

Option 1: AquaMetix Filtration

AquaMetix combines

activated carbon with

specialized adsorptive

media to address a

broad range of

water contaminants.

This option is especially

beneficial for households

seeking fluoride

reduction in

addition to other

filtration capabilities.

Option 2: KDF55 Filtration

KDF55 uses a copper-zinc

redox filtration medium

to help address chlorine

and certain dissolved

heavy metals.

This option is suitable

for compatible systems

where fluoride reduction

is not a primary concern.

Important:

KDF55 does not provide

fluoride reduction.

If fluoride is one of

your water quality

concerns, select an

AquaMetix option.

AquaMetix Filtration Benefits

AquaMetix is a

specialized filtration

technology combining

activated carbon with

additional adsorptive

media for broad-spectrum

contaminant treatment.

Its filtration

capabilities include

reduction of applicable

contaminants such as:

• Fluoride

• Chlorine and associated taste and odor

• Lead and certain other heavy metals

• Volatile organic compounds (VOCs)

• Other contaminants covered by applicable laboratory testing

The activated carbon

component helps reduce

certain organic compounds,

while the specialized

adsorptive media provide

additional treatment

capabilities.

AquaMetix filtration

is designed to retain

most naturally occurring

dissolved minerals,

including calcium

and magnesium.

Why Choose AquaMetix?

For customers who want

fluoride reduction

alongside broader

contaminant treatment,

AquaMetix is the

recommended option.

Actual reduction

performance depends

on water chemistry,

cartridge configuration,

flow rate, and

operating conditions.

View AquaMetix Laboratory Testing

KDF55 Filtration Benefits

KDF55 is a specialized

filtration medium made

from high-purity

copper and zinc.

It uses an oxidation-reduction

process, commonly called

a redox reaction,

to help address certain

water contaminants.

Filtration Applications

• Chlorine reduction

• Lead and certain other heavy metals

• Additional treatment of applicable dissolved contaminants

KDF55 media can also

help inhibit bacterial

growth within the

filtration media

under appropriate

operating conditions.

This does not mean

that KDF55 disinfects

water or makes

microbiologically

unsafe water potable.

Important:

KDF55 does not

reduce fluoride.

If fluoride reduction

is important to you,

select an AquaMetix

replacement option.

Actual contaminant

reduction depends

on cartridge design,

water chemistry,

contact time, and

operating conditions.

Available Replacement Pack Configurations

Select the replacement

pack corresponding

to your original

GW Multi-Round system.

GW4 Replacement Pack

• Includes 4 replacement filters

• Choose AquaMetix or KDF55

• Designed for compatible GW4 systems

GW5 Replacement Pack

• Includes 5 replacement filters

• Choose AquaMetix or KDF55

• Designed for compatible GW5 systems

GW7 Replacement Pack

• Includes 7 replacement filters

• Choose AquaMetix or KDF55

• Designed for compatible GW7 systems

GW9 Replacement Pack

• Includes 9 replacement filters

• Choose AquaMetix or KDF55

• Designed for compatible GW9 systems

Important:

The number refers to

the total number of

filters in the

corresponding system.

Please select the

correct system

configuration and

filtration option

from the dropdown

menu before ordering.

How to Choose the Right Replacement Pack

Choosing the correct

replacement pack is

simple when you know

your existing system

configuration and

water quality priorities.

Step 1: Identify Your System

Determine whether

your existing system

is a GW4, GW5,

GW7, or GW9.

The number indicates

how many filters

are included in

the system.

Step 2: Choose Your Filtration Media

Select AquaMet…