Maintain your Aquafilter EXCITO-ST water filtration system with the Aquafilter EXCITO-HF-CRT 3-Piece Replacement Cartridge Set. Designed specifically for the EXCITO-ST system configured with the optional TLCHF-FP ultrafiltration membrane, this genuine Aquafilter cartridge set provides the pre-filtration, water conditioning and activated carbon treatment needed to support your drinking water filtration system.

The three inline cartridges work alongside the separate TLCHF-FP ultrafiltration membrane to help reduce sediment, chlorine, selected organic substances, iron and certain heavy metals. The combination of sediment filtration, ion-exchange media, activated carbon and KDF helps improve filtered water taste and odour while providing additional water treatment.

Designed for EXCITO-ST with an ultrafiltration membrane

The EXCITO-HF-CRT is the dedicated three-cartridge replacement set for the Aquafilter EXCITO-ST system when used with the TLCHF-FP capillary ultrafiltration membrane.

Unlike the standard four-cartridge EXCITO-ST-CRT set, this configuration uses a different second-stage cartridge and replaces the usual final sediment cartridge position with the separate ultrafiltration membrane.

The three replacement cartridges are:

• 1 × AIPRO-20M-AQ sediment cartridge

• 1 × AIPRO-3-L-AQ multi-function conditioning cartridge

• 1 × AICRO-L4-AQ activated carbon and KDF cartridge

Please note: The TLCHF-FP ultrafiltration membrane is not included in this three-piece cartridge set. It must be purchased separately.

Three-stage replacement cartridge set

Stage 1 – AIPRO-20M-AQ sediment cartridge

The first cartridge uses polypropylene filtration media with a nominal 20-micron rating.

It provides initial mechanical filtration, helping to reduce suspended particles before water passes through the subsequent treatment stages.

It helps capture:

• Sand

• Silt

• Rust particles

• Sediment

• Other suspended solids

This pre-filtration stage helps protect the downstream cartridges and ultrafiltration membrane from larger particles.

Stage 2 – AIPRO-3-L-AQ multi-function conditioning cartridge

The second cartridge combines several filtration media to provide additional water conditioning.

Its layered construction incorporates polypropylene foam, conditioning media and ion-exchange media. It is designed to help reduce suspended particles, iron and iron derivatives, while also reducing water hardness.

Benefits include:

• Additional sediment filtration

• Reduction of iron and selected iron compounds

• Ion-exchange treatment to reduce water hardness

• Improved water conditioning before the final treatment stage

Actual performance depends on incoming water quality, contaminant levels and cartridge condition.

Stage 3 – AICRO-L4-AQ activated carbon and KDF cartridge

The final cartridge combines granular activated carbon with KDF media.

Activated carbon helps reduce free chlorine and selected organic compounds, improving the taste and smell of filtered water. KDF media provides additional treatment of certain dissolved metals and has bacteriostatic properties that help inhibit bacterial growth within the cartridge.

Benefits include:

• Reduction of free chlorine

• Improved taste and odour

• Reduction of selected organic substances

• Treatment of certain metals, including iron and heavy metals

• Bacteriostatic properties from KDF media

Compatible with the TLCHF-FP ultrafiltration membrane

This three-cartridge set is designed to operate alongside the Aquafilter TLCHF-FP capillary ultrafiltration membrane.

The optional membrane provides an additional filtration barrier using hollow-fibre technology. It is designed to retain fine suspended particles and certain microorganisms.

When used together, the three cartridges and UF membrane provide a four-stage filtration arrangement for the EXCITO-ST system.

Important: The TLCHF-FP membrane is sold separately and is not included in this product. This listing is for the three replacement cartridges only.

Genuine Aquafilter replacement cartridges

Using the correct replacement cartridges helps maintain the intended filtration configuration of your EXCITO-ST system.

The EXCITO-HF-CRT set is designed for the EXCITO-ST configuration with the TLCHF-FP membrane. It should not be confused with the standard EXCITO-ST-CRT four-cartridge replacement set.

Check your existing system configuration before ordering to ensure you select the correct replacement set.

Product benefits

• Genuine Aquafilter replacement cartridge set

• Three inline cartridges for the EXCITO-ST system

• Designed for use with the optional TLCHF-FP ultrafiltration membrane

• Helps reduce sediment, sand, silt and rust

• Helps reduce iron and selected iron compounds

• Ion-exchange media helps reduce water hardness

• Activated carbon helps reduce chlorine and improve taste and odour

• KDF media provides additional treatment of certain metals

• 1/4-inch NPT connections

• Compact 2.5 × 12-inch cartridge format

Technical specifications

Specification	Details
Brand	Aquafilter
Cartridge set model	EXCITO-HF-CRT
Compatible system	Aquafilter EXCITO-ST
Set contents	3 inline filter cartridges
Cartridge 1	AIPRO-20M-AQ
Cartridge 2	AIPRO-3-L-AQ
Cartridge 3	AICRO-L4-AQ
Filtration media	Polypropylene, conditioning media, ion exchange, activated carbon and KDF
Nominal micron rating	20 microns
Cartridge size	2.5 × 12 inches
Connection type	1/4-inch NPT
UF membrane compatibility	TLCHF-FP
UF membrane included	No
Application	Replacement cartridges for EXCITO-ST under-sink filtration system

Installation and maintenance

Before replacing the cartridges, shut off the water supply and follow the Aquafilter installation instructions for your EXCITO-ST system.

When fitting the new cartridges:

• Check the model and connection compatibility before installation.

• Observe the direction-of-flow arrow marked on each cartridge.

• Ensure all threaded connections are properly sealed.

• Check all connections for leaks after restoring the water supply.

• Flush the system after cartridge replacement before using the filtered water.

Aquafilter also specifies that the EXCITO-ST system must be protected against pressure surges using the appropriate pressure regulator.

For an EXCITO-ST system fitted with the TLCHF-FP ultrafiltration membrane, Aquafilter specifies the PLV-0104-50 regulator (50 psi / approximately 3.3 bar). The regulator is not included with the system.

Always follow the manufacturer's installation and maintenance instructions.

Package contents

• 1 × AIPRO-20M-AQ sediment cartridge

• 1 × AIPRO-3-L-AQ multi-function conditioning cartridge

• 1 × AICRO-L4-AQ activated carbon and KDF cartridge

Not included: Aquafilter TLCHF-FP ultrafiltration membrane, EXCITO-ST filtration unit, pressure regulator or additional installation accessories.