Best Replacement Under Sink Water Filters Deals Online in the UK (25 Deals Found)

Last Updated - 14/12/2025 Sort By:

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Water Gem

New
Water Gem Under Sink Filter System Replacement Inline Filter | Kitchen Tap Water Filter Cartridge | Universal 3/8" Male
Filtered Water on Tap: Water Gem ensures a steady supply of perfectly filtered water directly from the tap, when ever yo

£40.95
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Best Value
Finest-Filters

New
2 x Replacement Under Sink Filter Cartridges 6 Month for All Undersink Systems
You are purchasing a pack of 2 In Line replacement under sink filter cartridges.

£9.99
New
Waterdrop WD-10PP Under Sink Water Filter, Replacement for Waterdrop TSA & TSB
Manufacturer‎Waterdrop. The KDF can help to inhibit bäcteriä. 【No cracking no leaking】 The sealed under counter water fi

£24.99
Waterdrop

New
Waterdrop WD-RF10 Water Filter, NSF/ANSI 42 Certified, 30,000 Liters High Capacity, Replacement for Waterdrop Under Sink
【Compatible model】Compatible Replacement Filter for Waterdrop 10UA under sink water filter system, 10UB under sink water

£32.99
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New
Replacement Undersink Water Filter High Capacity 80K Litres Filter Cartridge
💧 Crafted with durability and efficiency in mind, our undersink water filter system seamlessly integrates into your kit

£29.99
SPRINGCLEAR

New
Spring Clear SPC-QUO Replacement Filter Compatible with QUOOKER Cold Water Filter Cartridge AC | Removes Chlorine, Taste
Enhanced Water Quality: Our Quooker compatible Cold Water Filter ensures your water is clean and refreshing, providing a

£41.99 £43.99
PUREPLUS

New
1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Under Sink Water Filter System, Dupont
Each cartridge lasts up to three months 15000 Gallons

£18.99
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New
2 x Replacement Under sink Water Filter Cartridges Inline - Push Fit Connectors
→ COFFEE MACHINE WATER FILTER. The Aqualogis ALCB1S comparable with DA29-10105J, 5231JA2010C, DD-7098 is an external fri

£14.20
Waterdrop

New
Waterdrop RF15 Replacement Filter Cartridge for 15UA/15UB/15UC Under Sink Water Filter, Reduces PFOA/PFOS, PFAS, Lead, C
【Compatible model】Compatible Replacement Filter for Waterdrop 15UA under sink water filter system (WD-15UA), 15UB under

£39.99
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New
AQUATI THREE STAGE UNDER-SINK CERAMIC DRINKING WATER FILTER+ACCESSORIES
Filter size: height 40 cm, width 40 cm, depth 15 cm. - Safety standards compliant. - Water temperature 2-45°C. System's

£25.95
Waterdrop

New
Waterdrop WD-10PP Under Sink Water Filter, Replacement for Waterdrop TSA & TSB &TSB-CM 3-Stage Under Sink Water Filter S
【Compatible model】 This under sink replacement water filter is only Compatible with WD-TSA/WD-TSB 3-stage under counter

£24.99
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Waterdrop

New
Waterdrop WF13 Under Sink Replacement Water Filter, NSF/ANSI 42 Certified, No Drilling Required, 6-Stage Filter Reduces
[Compatible model] WD-AS13 / WD-BS13 / WD-AP13 stainless-steel under sink water filter system.

£32.14 £34.99
New
AQUATI NEW 3 STAGE HMA UNDER-SINK DRINKING WATER FILTER REPLACEMENT STANDARD SET
They are resistant to chemicals and purify water for drinking and general purposes. Fits most systems using 2.5"x10" sta

£16.95
AquaHouse

New
3X AquaHouse 10" Carbon Block CTO Water Filter Cartridges for Drinking Water, Reverse Osmosis Systems, fits All 10" Filt
3x AH-CTO5 AquaHouse 10" Carbon Block water filter cartridges, fits all standard 10" water filter housings (cartridge di

£15.99
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New
2x Under-sink Drinking Water Filter Replacement Inline Cartridge 1/4"
Connections: 1/4" water pipe connections (push - fit connectors). Compatible with any product using an external filter a

£13.90
iSpring

New
iSpring FC15 5 Micron 10" Replacement CTO Carbon Block Water Filter Cartridge for Under Sink Reverse Osmosis RO Filtrati
Protect Your Family and Household Appliance from Chlorine and More: Say goodbye to smelly, bad tasting water! The FC15 c

£10.99
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New
2x Under Sink Drinking Water Purifier & Softening Filter Replacement Softener
The softening effect takes place within the filter without adding any salt or chemicals into the water. Fits most RO sys

£32.95
New
Waterdrop RF10-UF, Replacement For 10UA/10UA-UF/10UB-UF Under Sink Water Filter
It allows you to get purified water from either your original faucet or a dedicated one. With Waterdrop, you can easily

£39.99
New
IN LINE UNDER SINK DRINKING WATER FILTER REPLACEMENT 1/4" PUSH-FIT
Connections: 1/4" water pipe connections (Push Fit connectors). Compatible with system using an external filter and 1/4"

£13.95
New
3x Under sink Inline Drinking Water Filter Replacement Cartridges 1/4" Push-fit
Connections: 1/4" water pipe connections (push - fit connectors). Compatible with any product using an external filter a

£18.90
New
Waterdrop RF15 Replacement Filter Cartridge for 15UA/15UB UnderSink Water Filter
With Waterdrop, you can easily get clean, safe, and healthy purified water!'. Waterdrop Undersink Water Filtration Syste

£39.99
New
uk water filters 2 x replacement under sink water filters + housing #7923#
2 x 5 micron carbon filters. may be any light mark.

£49.99
New
Under Sink Replacement drinking Water Filter Cartridge Carbon ABODE SWICH AT2111
Our Carbon UK manufacturered water filters for chlorine odour and taste reduction. Our Water filters are WRAS approved.

£45.00
New
Waterdrop WF13 Under Sink Replacement Water Filter, Replacement for AS13/BS13
Compare with Other Products from Waterdrop. (NOTE: This system DOES NOT lower TDS value because it adds beneficial miner

£34.99
New
ALTHY Under Sink Drinking Water Filter System Purifier Reduction Chlorine Odor
ALTHY Under Sink Water Filter System has a large filtration capacity of 20000G or 1 Years when used with municipal water

£38.40

25 Replacement Under Sink Water Filters deals are available from: Amazon, eBay stores, starting from £9.99.
The biggest discount we found is 10%% on Water Gem Under Sink Filter System Replacement Inline Filter | Kitchen Tap Water Filter Cartridge | Universal 3/8" Male Stem Filter for Chlorine, Taste, Odour and Scale (2 Pack) at Amazon.
The lowest price we found is £9.99 while the highest is £49.99.
Prices for the best Replacement Under Sink Water Filters deals average at £28.37.
Last updated on December 14, 2025.
We scanned these quality online stores and more to deliver you with the best offers online available for Replacement Under Sink Water Filters.