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Instructions for Replacing Your In Line Undersink Water Filter

1) Remove Old Filter

a) Turn off the water supply to your old filter (b) Open your sink top tap to relieve pressure. (c) Take old filter and disconnect tubing from both ends

2) Check your in / out Tubes

Make sure the ends are cut squarely and are free from any scratches or burrs. If in doubt trim tube back a bit using a stanley / razor knife. If you have any type of connectors already attached to the tube ends simply cut them off. You simply need to have two bare end tubes

3) Fitting Your New Filter

a) Check flow direction is correct (see Flow arrow on the filter. Arrow points in the direction the water should flow ie to your tap).

b) Select your first tube. Take a plastic nut – see the small bag - and push your tube end through the centre ie so the nut is hanging loose on the tube.>

Then push tube end into the fitting on the filter. Make sure it goes all the way in. It should be approx a centimetre. (Tip: Twist as you push it in).

c) Now slide nut down to the thread on the filter neck and screw nut onto the filter to finger tight.

If necessary tighten nut further with a spanner. Caution: DO NOT OVERTIGHTEN. ONE or TWO MORE TURNS with spanner after finger-tight should suffice.

Now repeat above procedure with other tube / other end of filter.

Checkout this quick video on how to fit the compression nuts to your fridge filter

4) Flush the New Filter Through. Turn water supply to fridge back on and run water through for AT LEAST two minutes plus. This is to remove natural carbon dust and trapped air. When water runs clear it's ready to drink

5) Check for leaks when flushing AND double check for leaks 10 minutes later. Look for any tiny amount of leaking at the filter ends. If this happens redo fittings as above.

Any Problems? Please Telephone 020 8761 6611

Important Note re Reminders

To avoid long term bacteria build-up it is important to change or disconnect your water filter on time.

We will email you reminders when it's to change, but please make sure you whitelist our email address so these reminders aren't sent to spam.

And/ or set an alarm now on your mobile or use Siri etc

Please note your feedback and any suggestions as to how we can improve our service are always appreciated.


Thank you

Sales Admin Team
Telephone 020 8761 6611

Water Filter instructions / Guides for fitting and installing


Need advice?
Please call us on
020 8761 6611


UK Water Filters Ltd
Unit D120
Parkhall Industrial Centre
SE21 8DE

UK Water Filters Ltd a Company Limited by Guarantee,
Registered in England,
Company Number: 05249436,
VAT Reg. No. 863 7634 91


Questions? Call us for friendly advice
+44 (0) 20 8761 6611




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