This post is also available in:
English 
Italiano (Italian)
Replacing water filter cartridges at home should be quick, clean, and simple. In this short guide and video, we compare the older Aquaphor Click & Turn cartridge system with the newer Aquaphor Auto-Lock system used in modern under-sink and reverse osmosis water filtration systems.
This article is useful if you are looking for how to replace an Aquaphor filter cartridge, how to change an under-sink water filter, or how modern quick-change cartridges compare with classic 10-inch drop-in water filter cartridges.
Video: Aquaphor cartridge replacement comparison — older Click & Turn system vs newer Auto-Lock cartridge system.
Old vs New Aquaphor Cartridge Replacement System
In older Aquaphor filter systems produced before 2025, such as the Aquaphor Crystal under-sink water filter with three filtration stages, the cartridge was installed by inserting it into the filter head and turning it clockwise until it clicked into place.
To remove the cartridge, the user had to press the release button with one hand, rotate the cartridge counterclockwise with the other hand, and then pull it out. This system was already faster than many traditional filter housings, but it still required two-hand operation.
New Aquaphor Auto-Lock System
In the newest Aquaphor systems, cartridge replacement is even easier. The new Auto-Lock cartridge system allows the user to install or remove a filter cartridge with a simple twist motion, often using just one hand.
In the video, we demonstrate the process using a compact Aquaphor RO-101S / Morion reverse osmosis water filter system. Before installing a new cartridge, remove the flushing cap and keep it in a safe place, because it may be needed for future flushing procedures.
Then simply insert the new cartridge into the correct socket and turn it clockwise until it clicks. The cartridge is securely fixed, with the label facing outward. No special tools, no plumber, and no excessive force are required.
How to Replace an Aquaphor Cartridge
- Turn off the water supply before starting the filter replacement.
- Hold the cartridge firmly with one hand.
- Rotate the cartridge counterclockwise, similar to unscrewing a standard light bulb.
- Remove the old cartridge from the filter head.
- Insert the new replacement cartridge into the matching socket.
- Turn it clockwise until it clicks into the locked position.
- Check that the cartridge is securely fixed before using the system again.
Why Auto-Lock Is Easier Than Classic 10-Inch Drop-In Filters
Traditional 10-inch drop-in water filter cartridges usually require opening a filter housing, removing the old cartridge, cleaning the housing, checking the O-ring, inserting the new cartridge, and tightening the housing again. This can be messy and time-consuming.
Aquaphor quick-change cartridges are designed to make home water filter maintenance faster and cleaner. The Auto-Lock system makes the process even simpler by reducing the number of steps required for regular filter replacement.
Compatible Aquaphor Water Filter Systems and Replacements
If you are choosing a new under-sink water filter or looking for replacement cartridges in Europe, you can check the following Aquaphor options from ProMarket-EU:
- Aquaphor Crystal A under-counter water filter unit
- Aquaphor Morion DWM-101S compact reverse osmosis system
- Replacement water filter cartridges and spare parts
Who Is This Video For?
This guide is especially helpful for homeowners, apartment owners, office managers, and anyone in Europe looking for a simple way to replace water filter cartridges without calling a plumber.
It is also useful if you are comparing Aquaphor quick-change cartridges with classic 10-inch drop-in filters, or if you want a compact reverse osmosis system that is easier to maintain at home.
FAQ: Aquaphor Filter Cartridge Replacement
Can I replace Aquaphor cartridges myself?
Yes. Modern Aquaphor quick-change cartridges are designed for easy DIY replacement. In most cases, you only need to turn off the water, twist out the old cartridge, and twist in the new one.
Do I need tools to replace Aquaphor filter cartridges?
No special tools are usually required for Aquaphor quick-change cartridges. The new Auto-Lock system is designed to make replacement fast and simple.
Is Aquaphor Auto-Lock easier than 10-inch drop-in filters?
Yes. Aquaphor Auto-Lock cartridges are generally faster and cleaner to replace because you do not need to open a traditional filter housing or handle a loose drop-in cartridge.
Which Aquaphor systems are shown in the video?
The video compares an older Aquaphor Crystal Click & Turn cartridge system with a newer Aquaphor RO-101S / Morion reverse osmosis system using the Auto-Lock cartridge replacement design.
Where can I buy Aquaphor replacement cartridges in Europe?
You can find Aquaphor water filters, reverse osmosis systems, and replacement cartridges in the ProMarket-EU online store, including under-sink filters and spare parts for home water filtration systems.
Share this guide
If this video helped you understand Aquaphor filter replacement, share it with someone who wants cleaner drinking water at home.
Need replacement cartridges or a new home water filtration system? Browse Aquaphor under-sink filters, compact reverse osmosis systems, and spare filter cartridges from ProMarket-EU.
This post is also available in:
English Italiano (Italian)
