Water Filter Cartridges and Service Kits

Shop water filter cartridges and service kits online with Installed Today for whole home water filters, under-sink drinking water systems, reverse osmosis systems, UV water filtration systems and replacement filter maintenance. Water filter cartridges are the parts that need replacing over time to keep your filtration system working properly.

This collection is designed for customers replacing sediment cartridges, carbon cartridges, pleated cartridges, polyspun cartridges, reverse osmosis cartridges, UV system pre-filters and complete filter service kits. Whether you are maintaining a whole home water filter, servicing a drinking water system, replacing cartridges in a large-format filter housing or preparing for a scheduled filter change, Installed Today makes it easier to compare cartridge options online.

Choose supply only if you are replacing the cartridges yourself or already have your own licensed installer arranged. Supplied and installed or service options may be available on selected products where eligible in Brisbane and Gold Coast service areas.

Supply Only Water Filter Cartridges Across Australian Metro Areas

Supply-only replacement cartridges are ideal if you already know the cartridge size, model number and filter system you need to service. This option suits homeowners, plumbers, property managers, builders, maintenance teams and trade customers who only need the cartridges or service kit supplied.

The product price is for the selected cartridge or service kit only. Installation, filter housing replacement, plumbing changes, filter servicing, UV lamp replacement, old cartridge removal, disposal, pressure checks, leak repairs, housing upgrades, valves, fittings and compliance work are not included unless selected separately or shown as part of the chosen option.

Before ordering supply only, check the cartridge size, micron rating, system compatibility, flow rate, filter housing type, cartridge length, diameter and whether your system requires sediment, carbon, specialty media, reverse osmosis or UV pre-filtration cartridges.

Replacement Cartridge Service Options in Brisbane and Gold Coast

Cartridge replacement or filter service options may be available on selected products in eligible Brisbane and Gold Coast service areas. This option can be useful if you want the replacement cartridges supplied and the filter system serviced by an eligible installer.

Availability depends on the filter type, cartridge access, housing condition, water pressure, installation location, isolation valves, existing plumbing, cartridge compatibility and any additional work required.

Some filter systems may need extra parts, new o-rings, housing spanners, pressure limiting, valve changes, leak repairs, UV lamp replacement, housing upgrades or additional servicing work. These are not included unless selected separately or shown as part of the chosen option.

Matching Cartridges to the Existing Filter System

The most important part of buying replacement water filter cartridges is matching the cartridge to the existing filter system. A cartridge can look similar but still be the wrong size, wrong micron rating, wrong diameter or wrong type for the housing.

Before ordering, check the existing cartridge label, filter housing size, brand, model number and system type. Common cartridge formats include slimline cartridges, large-format cartridges, 10 inch cartridges, 20 inch cartridges and jumbo or Big Blue style cartridges.

If the old cartridge has no clear label, check the housing size and filter system model before buying. Guessing based on appearance can lead to poor fit, leaks, reduced flow or filtration that does not match the system’s intended use.

Whole Home Water Filter Cartridges

Whole home water filter cartridges are commonly used in systems installed on the main incoming water line. These systems may filter water before it reaches taps, showers, laundries, bathrooms and appliances.

Whole home filters often use larger cartridges because they need to handle higher flow rates than a kitchen drinking water filter. Common options include 10 inch or 20 inch large-format sediment and carbon cartridges, depending on the filter housing and system design.

When replacing whole home cartridges, check the cartridge size, flow rate, micron rating, water pressure, housing condition and whether the system uses one, two or three filtration stages.

Sediment Filter Cartridges

Sediment cartridges are designed to reduce particles such as dirt, rust, sand, grit and other suspended matter from the water supply. They are often used as the first stage in whole home filters, rainwater systems, UV systems and drinking water filters.

Sediment cartridges may be pleated, spun, wound or melt-blown depending on the system and application. Pleated cartridges can provide a larger surface area and may suit selected higher-flow applications. Polyspun or melt-blown cartridges are commonly used for general sediment reduction.

The right sediment cartridge depends on the water source, cartridge size, micron rating, expected flow and how much sediment the system needs to handle.

Carbon Water Filter Cartridges

Carbon cartridges are commonly used to help reduce chlorine taste and odour in town water supplies. They are often used in whole home water filters, kitchen drinking water systems and selected multi-stage filtration setups.

Carbon cartridges may be used after a sediment cartridge so larger particles are reduced before the water reaches the carbon stage. This can help protect the carbon cartridge and support better cartridge life.

When comparing carbon cartridges, check the cartridge size, flow rating, chlorine reduction capacity, micron rating, housing compatibility and whether it suits drinking water, whole home use or a specific filter system.

Pleated Water Filter Cartridges

Pleated water filter cartridges are commonly used for sediment reduction where a larger surface area is helpful. The pleated design can allow more filter surface within the cartridge, which may support better flow and longer service life in selected applications.

Pleated cartridges can be useful for whole home systems, rainwater filtration, tank water pre-filtration and situations where sediment load is higher than normal.

Before choosing a pleated cartridge, check the micron rating, cartridge size, whether it is washable or reusable, and whether the cartridge suits the filter housing and water source.

Polyspun and Melt-Blown Cartridges

Polyspun and melt-blown cartridges are commonly used for general sediment reduction. They are often chosen for straightforward cartridge replacement in under-sink filters, whole home systems, rainwater setups and pre-filtration stages.

These cartridges are usually designed to trap particles through the depth of the cartridge. They are practical, common and often used as a cost-effective first filtration stage.

When replacing a polyspun cartridge, check the length, diameter, micron rating and whether the system requires a specific brand or model.

Large Format 10 Inch and 20 Inch Cartridges

Large-format cartridges are commonly used in whole home water filters and higher-flow systems. Common sizes include 10 inch and 20 inch cartridges, with larger diameters used in jumbo-style housings.

A 10 inch large-format cartridge may suit smaller whole home systems, compact filtration setups or selected under-sink applications depending on the housing.

A 20 inch large-format cartridge is commonly used where higher flow, larger homes or longer cartridge life is required.

Before ordering, check both the cartridge length and diameter. A 20 inch cartridge is not enough information by itself if the housing needs a specific large-diameter format.

Filter Service Kits

Water filter service kits are designed to make scheduled filter maintenance easier by grouping the required replacement cartridges together. A service kit may include sediment cartridges, carbon cartridges, specialty cartridges, o-rings, UV pre-filters or other replacement parts depending on the system.

A service kit can be useful when your filtration system uses multiple stages and you want the correct cartridge set for a scheduled change. It can also help reduce the risk of replacing only one cartridge when the system requires multiple cartridges to be changed together.

Before ordering a service kit, check the filter system model, housing type, cartridge sizes and whether the kit includes everything your system needs for the service.

Reverse Osmosis Replacement Cartridges

Reverse osmosis systems usually require more than one replacement component. These may include sediment pre-filters, carbon pre-filters, post-filters, reverse osmosis membranes and remineralisation cartridges depending on the system.

The membrane often has a different replacement schedule to the standard pre-filters and post-filters. This means not every service requires every part to be changed.

Before ordering reverse osmosis cartridges, check the system model, number of stages, cartridge type, tubing size, membrane type, replacement schedule and whether the kit includes all required filters for the service interval.

UV Water Filter Service Kits

UV water filtration systems often need sediment pre-filtration before the UV chamber, along with UV lamp replacement and quartz sleeve maintenance depending on the system.

A UV service kit may include pre-filter cartridges, UV lamps, o-rings or other system-specific service parts. The exact contents depend on the brand and model.

Before ordering a UV service kit, check the UV system model, lamp type, flow rate, pre-filter size and whether the quartz sleeve also needs cleaning or replacement.

Cartridge Micron Ratings and Water Flow

Micron rating is one of the key details to check when buying water filter cartridges. A lower micron rating may filter finer particles, but it can also affect flow depending on the cartridge type, water pressure and system design.

A cartridge that is too restrictive may reduce water flow, especially in whole home systems or high-demand applications. A cartridge that is too coarse may not filter the particles you are trying to reduce.

The right micron rating depends on the water source, filter purpose, housing size, flow requirement and whether the cartridge is used as a pre-filter or final filtration stage.

Replacing Cartridges in Whole Home Systems

Whole home filter cartridges often need more planning than small drinking water filters because they serve the entire property. If the cartridges become blocked or overdue for replacement, the home may experience reduced water flow or pressure.

Before replacing whole home cartridges, check whether the system has isolation valves, pressure release, housing access, enough clearance to remove the housings and suitable space to work around the filter.

If a housing is old, cracked, difficult to open or showing signs of leaking, cartridge replacement may not be the only issue. The filter housing, o-rings or valves may also need attention.

Replacing Cartridges in Under-Sink Filters

Under-sink drinking water filters are commonly used for kitchen drinking water and may use single-stage, twin-stage or multi-stage cartridge setups.

When replacing cartridges under the sink, check cupboard access, filter bracket position, water shut-off, tubing condition, tap connection and whether the filter is easy to service.

If cartridges are hard to reach, it may be worth considering whether the system should be repositioned or upgraded during the next service.

Cartridge Replacement Timing

Water filter cartridges need regular replacement to keep the system working properly. Replacement timing depends on water quality, cartridge type, household usage, filter size and manufacturer recommendations.

A busy household may use cartridge capacity faster than a low-use household. Whole home systems may also load up faster where sediment levels are high, water mains work has occurred, or tank water is being filtered.

Common signs that cartridges may be due for replacement include reduced flow, changed taste, visible sediment, odour returning, pressure drop, discoloured cartridge media or the system reaching its recommended service interval.

Planning Cartridge Changes for High-Use Homes

Homes with higher water use may need to replace cartridges more often than the standard guide suggests. Larger families, multiple bathrooms, heavy laundry use, irrigation through filtered water, rental properties and homes with higher sediment levels can all affect cartridge life.

For high-use homes, compare cartridge capacity and flow rate carefully. Larger housings or higher-capacity cartridges may be more practical than smaller filters that need frequent servicing.

If the filter system regularly loses pressure before the expected replacement time, the cartridge type, micron rating or system size may need reviewing.

Choosing Cartridges for Town Water

Town water filter cartridges are commonly chosen for chlorine taste and odour reduction, sediment reduction and everyday water quality improvement. A common setup may include sediment filtration followed by carbon filtration.

For town water, carbon cartridges are often important for taste and odour improvement, while sediment cartridges can help protect the carbon stage by reducing particles first.

The right cartridge combination depends on the existing system, water quality goals, flow requirement and whether the filter is for whole home or drinking water use.

Choosing Cartridges for Rainwater and Tank Water

Rainwater and tank water systems can have different cartridge requirements compared with town water. Tank water may contain sediment, organic matter, colour, odour or particles from roofs, gutters and tanks.

Sediment pre-filtration is often important for rainwater systems, especially where UV treatment is also used. UV systems need clear water so the UV light can treat the water effectively.

For tank water, cartridge selection should consider the tank condition, water clarity, pump setup, filter stages, UV requirements and whether the water is used for drinking, showers, laundry or general household use.

Why Buy Water Filter Cartridges and Service Kits from Installed Today?

Installed Today makes it easier to compare water filter cartridges and service kits online for whole home filters, drinking water systems, reverse osmosis systems, UV filtration and replacement filter maintenance.

You can compare cartridges by size, micron rating, filter type, system compatibility, service kit contents and application, then choose supply only or service options where available.

Whether you need sediment cartridges, carbon cartridges, pleated cartridges, reverse osmosis filters, UV service kits, whole home filter cartridges or a complete replacement cartridge pack, Installed Today helps you choose practical replacement parts for your filtration system.