Replacement Filters

Filter

4 products

Replacement Filter for The Winchester

$72.00

Replacement Filters for The Methven

$140.00

Replacement Filters for The Canterbury (Reverse Osmosis)

$245.00

Replacement Filters for The Highbank

$267.00

Filter replacement service

Keep your filtration system performing at its best.

Regular filter replacements help maintain water quality, protect your system and give you one less thing to think about.

Two cylindrical filter cartridges, one with a red end cap and one with a black end cap, shown beside a clear glass of water on a white surface.

Step 1:

Choose your filter

Select the replacement filter for your system and your preferred replacement interval. Complete your details and we'll set up your reminder schedule.

Step 2:

We'll remind you

When it's time to replace your filter, we'll contact you to arrange delivery or professional installation, helping keep your filtration system performing at its best.

Step 3:

Stay flexible

Need to make a change? You can update your replacement schedule or cancel the service at any time.

Sign Up

Submit your details and we'll set up your reminder schedule.

Fast, hassle-free replacement filters

I replaced our old filter last week and the water tastes so much fresher already. It's good to know I'm keeping the system running at its best. Definitely worth staying on top of replacements.

Ordering my replacement filter was simple and it arrived quickly. Swapping it out took only a few minutes, and the water flow instantly improved. Great service and top-quality filters!

These replacement filters fit perfectly every time. The team helped me choose the right one for my system, and the whole process was quick and hassle-free. Excellent customer service.

Signs to Replace Your Water Filter

Replacing your water filter cartridge at the right time helps maintain water quality and keeps your filtration system performing effectively. While the manufacturer's recommended replacement interval is a good guide, changes in your water quality or household usage may mean your filter needs replacing sooner. Knowing the signs of a worn filter can help ensure your system continues to deliver clean, reliable water.

Reduced Water Flow

A noticeable drop in water pressure or flow is often a sign that your filter needs replacing. As the filter captures sediment and other contaminants, it gradually becomes blocked, restricting water flow and reducing the performance of your filtration system.

Changes in Taste, Smell or Appearance

If your water suddenly tastes or smells different, or appears cloudy, it may be time to replace your filter. As filters reach the end of their service life, they become less effective at reducing unwanted contaminants, which can affect the taste, odour and appearance of your water.

Filter Lifespan Reached

Every filter has a recommended replacement interval based on its design and expected capacity. While the lifespan can vary depending on your water quality and household usage, replacing your filter on schedule helps maintain water quality and keep your filtration system performing effectively.

A blue outline warning icon with an exclamation mark inside a triangle, centered on a plain white background.

Indicator Light or Display Alert

Many water filtration systems include built-in filter replacement indicators. Common in fridge and under-bench systems, these flashing lights or display alerts are a simple reminder that it's time to replace your filter and maintain your system's performance.

Scheduled Maintenance Reminder

If you're following a maintenance schedule and the time has come for a filter change, it's best not to delay. Regular replacement ensures your system continues to provide reliable, great-tasting water. If you’re unsure which filter to order, call our team for friendly, expert advice on 0508FILTER (0508 345 837).

Frequently asked questions

How do you replace a whole house water filter?

The replacement protocol will differ based on the type of filtration system. General steps include: turn off the water supply, release pressure, and unscrew the filter housing. Remove the old cartridge, insert the new filter, then reassemble and turn the water back on. If you’re unsure, Filtration Canterbury can guide you through the process or arrange the servicing.

How often should you replace a whole house water filter?

The frequency for replacing your whole house water filter will depend on your water quality and usage. Generally whole house water filters should be replaced every 6–12 months. Higher sediment or contamination levels may require more frequent replacement. Regular replacement of cartridges ensures consistent performance and water quality.

How do you change a water filter cartridge?

First turn the water supply off and release the pressure, then unscrew the filter housing. Remove the old cartridge, insert the new one, and reassemble the housing. Turn the water back on and check for leaks.

What is in a water filter cartridge?

Water filter cartridge typically contain layers of filtration media such as sediment filters to trap particles, activated carbon to remove chlorine, chemicals and odours, and sometimes specialised media for metals or minerals. Some systems also include membranes or UV components for additional treatment. The type of replacement filter cartridge will depend on your water filtration system.

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