Tools you'll need:
Before you get started, make sure you have the following:
1
A filter housing wrench
This is used to unscrew the filter housings. One is usually included with your Crystal Series system.
2
New replacement filters
You’ll need the correct sediment and/or carbon filters depending on whether you have a 3-stage or 4-stage system.
3
Food-grade silicone lubricant
This helps keep the housing O-rings sealed properly and prevents leaks. Use only a small amount if the O-rings appear dry.
4
A clean cloth or paper towel
Handy for wiping out the filter housings and cleaning up any drips or spills.
5
Access to the water mains and power switch
You’ll need to turn off both before starting to ensure a safe and smooth process.
6
A bucket or towel
Useful for catching any water left in the housings when you open them.

Video Step by Step
Video How-To
The Crystal Series is designed to make whole-house water filtration simple, helping improve the quality, taste and smell of the mains water flowing through your home. Like any filtration system, it needs regular maintenance to keep performing at its best.
The good news is that replacing the filters is a straightforward process. With just a few steps, you can help maintain strong water flow, effective filtration and consistent performance, without needing a plumber. In this guide, we’ll show you how to replace your Crystal Series filters so your system can keep delivering filtered water throughout your home.

Instructions
How to replace your filter

Before you begin, turn off the water supply to your Crystal Series system at the mains or isolation valve.
This step ensures your system is safe to work on and prevents leaks or water pressure buildup during filter removal.
Turn off the water and power
Step 1
Release pressure in the system
Step 2
Before opening the housings, it’s important to release any built-up pressure. Start by opening a nearby tap that’s located after the system to help relieve the water pressure.
Then, press the red pressure release button on top of each filter housing. This step ensures the system is fully depressurised before you begin removing the housings.
Once pressure is released, use the housing wrench to unscrew the filter housings. Carefully remove the old filters and set them aside.
Check the inside of each housing and rinse them out if there’s any visible sediment or build-up. Clean housings help your new filters work more efficiently.
Remove the old filters
Step 3

Check the O-ring
Step 4
Before inserting the new filters, check the O-ring inside each housing. If it looks dry or worn, apply a small amount of food-grade silicone lubricant.
This will help to ensure the housings are sealed properly and prevent leaks.

Place the new filters into the housings, making sure they’re seated correctly. Screw the housings back into place by hand, then use the wrench to give them a final tighten, but be careful not to overtighten.
A snug fit is all you need to keep everything sealed and secure.
Install the new filters
Step 5

Now that your new filters are in place, turn the water supply back on slowly. Once everything is running, open one or more taps in the house to flush the system. This helps release any trapped air and clears out fine carbon particles if you’ve installed a carbon filter. Let the water run for a few minutes until it flows smoothly and clearly.
Restore water and flush the system
Step 6

Safe water, made easy
Replacing your Crystal Series filters is a simple part of keeping your whole-house filtration system working effectively. Regular filter changes help maintain water flow, filtration performance and the fresh taste and smell of your household water.
With a few basic tools and a little time, you can replace the filters yourself and keep your Crystal Series performing as it should. Staying on top of filter changes helps ensure you continue to get the benefits of filtered mains water throughout your home.
FAQs
Here are some common questions homeowners ask about replacing filters and maintaining their Bug Buster system.
How does the Crystal Series filtration system work?
The Crystal Series uses multi-stage filtration to improve mains water throughout your home. Sediment filtration helps remove dirt and fine particles, while carbon filtration helps reduce chlorine, unpleasant tastes and odours and other selected contaminants, depending on the filter you choose.
The result is cleaner, fresher-tasting water from taps throughout your home.
How often should I replace the filters?
Filters should generally be replaced every 12 months, but this can vary depending on your household water usage and local water conditions.
Can I change my water filter myself, or do I need a plumber?
Filter changes can be done easily at home. However, installation of the system itself must be carried out by a qualified plumber.
Where can I buy the replacement filters and lamps?
Get in touchAll replacement parts, including service kits, are available here on our website.



