Step 1 – Shut The Water Supply Off
The first thing you need to do is to shut the water supply to the filter. You should be able to do this via the cartridge itself.
The next step is to unscrew the filter housing or cartridge carefully. Please don’t apply force or else you might end up cracking the filter cartridge.
Once you have the filter housing in your hand, remove the old filter out and clean the housing with either water or bleach. Make sure the ring inside is nice and clean.
Now that you took care of the clean up, pop the new filter back into the filter housing and reattach it. Hand tightening should be enough. Don’t give it a rough twist or you might end up damaging the threads.
Once done, slowly turn the water supply back on so that the filter housing fills up and then shut it off again.