Filter Housings

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Filter Housings

Are you looking for a high-quality water filter housing at an affordable price? Look no further, Clarence Water Filters has got you covered.

We are one of Australia’s leading suppliers of water filter housings and housing parts. We stock a wide range of products including housings by QMP, Aqua-pure, 3M, Pentek, Pentair, and Aqua-pro.

We also have parts for water filter housings including:

If you need any help choosing the right filter housing, please contact us via or give us a call on 02 6646 8565.

Filter Housing Sizes

Filter housings come in a huge range of shapes and sizes. However, the common sizes are:

  • 10″ x 2.5″ Water Filter Housings
    Often used for drinking water filter systems. Can be installed as an under sink or bench top solution. Uses standard double open ended 10″ x 2.5″ filters which provides plenty of flexibility for the user.
  • 10″ x 4.5″ Water Filter Housings
    Commonly used for tank sediment filtration or for small whole house filter systems.
  • 20″ x 2.5″ Water Filter Housings
    A taller housing sometimes used for small 1-bathroom whole house installations and small business installations.
  • 20″ x 4.5″ Water Filter Housings
    The most common filter housing for whole house installations. Provides room for larger 20″ x 4.5″ filters that offer excellent contaminant removal at high flow rates. Ideal for buildings with 2-3 bathrooms and several occupants.

All of the above sizes are available in White, Blue and Clear plastic. There are also stainless steel water filter housings available for commercial and hot water applications.

There are a range of inlet and outlet port sizes available, including 1/”4, 3/4″, 1″, and 1.5″ ports. We also stock housing mounting brackets and opening spanners and tools for most housing types.

Replacement seals and O-rings are available to suit most brands of filter housings.

We have media vessels available for whole of house and commercial applications.

Water Filter Housings Styles

Cartridge Filter Housing

Cartridge filter housings consists of a filter head and a filter sump, with the sump screwing onto the filter head.

A water filter cartridge is placed inside of the sump. Water enters the sump and pushes through the side walls of the filter or up through the bottom of the filter, interacting with the media inside the filter.

Most housings will have the inlet and outlet located on the filter head, as can be seen on the 20″ x 4.5″ Big Blue Water Filter Housing.

Bag Filter Housing

Bag filter housings take a bag filter, usually made of nylon mesh or polypropylene felt. Bag filters are designed to remove particulates from water, including sand, silt, dirt and rust. View our range of bag filter housings.

Water Filter Vessels

Vessels are designed to take large amounts of filter media. They are often used with activated Carbon (Chemical reduction), Glass Media (Sediment reduction), Calcite (for pH improvements) and Resin (for softening or pH adjustments). View our range of water filter vessels.

Popular Water Filter Housings

The most popular products we stock include:

Big Blue Water Filter Housing

The Big Blue water filter housing is one of our most popular whole house water filter housings. Available in large 20″ x 4.5″ or 10″ x 4,5″, Big Blues are UV-resistant housings which can handle fast flow rates.

The Big Blue is a cartridge filter housing, where the sump takes a double open ended cartridge filter (DOE). One of the benefits of this style of filter housing is that you can use virtually any DOE filter cartridge.

Most generic Big Blue Water Filter Housings are made in Taiwan by Aqua-pro. Rugged, long-lasting, and affordable, they are the perfect choice for whole house water filtration.

Pentek Big Blue and Pentek Big White water filter housings are American made products which are even higher quality. If you prefer the quality of American-made products, they are an even better choice.

Aqua-Pro Water Filter Housing

Aqua-pro filter also offer smaller 10″ x 2.5″ blue water filter housings. They are also Taiwanese-made products which are UV resistant and able to tolerate tough conditions.

The strength of these Aqua-pro systems is the reason why they are often used as external point of entry caravan water filters or for external installations which filter tank water. 

Clear Water Filter Housing

Clear water filter housings are ideal for situations where you need to monitor the appearance of the fluid you are filtering or the condition of the water filter cartridge.

It’s important to note that clear housings are unsuitable for external use, as sunlight will penetrate the housing and increase the risk of bacterial or algal growth.

Home brewers and spirit makes often use clear housings as they like to monitor the speed and appearance of the fluid being filtered.

Clear water filter housings are also popular for industrial and medical applications.

QMP White Water Filter Housing

QMP Housings are the most popular housing type for both under sink and bench top water filter installations. They are high-quality American-made products which offer excellent durability at a reasonable price.

QMP white filter housings have take standard 10″ x 2.5″ water filter cartridges, which are easy to find.

There are two options for port sizes —  1/4″ Ports and 3/4″ Ports. 3/4″ ports are ideal for high flow situations where you might use stainless steel flexi hoses. 1/4″ ports are best suited for use with a dedicated drinking water tap.

QMP housings are useful for single, twin, and triple filtration systems. Can be used as a housing for under sink and bench top.

Filter Housing Frequently Asked Questions

What Are Water Filter Housings?

A water filter housing is a vessel which holds water filter cartridges, filter bags, or filter media.

Housings are design to accept incoming water and direct it through whatever filter it holds.

Filter Housings come in a wide range of designs and sizes. While most are made from plastic, there are also stainless steel models available for industrial and maritime applications.

What Are Cartridge Filter Housings?

Cartridge filter housings have sumps which are screw onto a filter head. The sump contains a cartridge filter, while the head has controls water flow. The water filter system’s inlet and outlet are usually on the head.

In most cartridge housings, the water will enter one side of the head before flowing into the sump. Water flows through the cartridge and back up to the outlet on the filter head. 

Can You Help Me Find The Correct Filter Housing?

Absolutely! If you need any assistance, please contact us at or give us a call on 02 6646 8565.

What Size Are Under Sink Filter Housings?

Most under sink uinits are 10″ x 2.5″ housings. However, there is a lot of variance in terms of port sizes, filter head, and thread types.

Most under sink units use double open ended filter housings. However, some older units might have filters with a threaded end or a single open end. That’s why it’s always advisable to examine the filter itself before buying a new housing.

Need Help? Get In Touch Today!

If you’d like to learn more about water filter housings, please contact us at or give us a call on 02 6646 8565.