Home / Water Filter Cartridges / Mains Water Filter Cartridges
Below you'll find replacement water filter cartridges for our Moby and Doby mains water filters.
If you can't find the water filter cartridge you're looking for then either call us on 01352 838 281 or send us a message through our help desk.
We recommend you change the o-ring every couple of years, so if you haven't changed it recently just select o-rings from the drop down menu on each product below. See below for 'Why do I need to change the o-ring?'
Free standard postage for all deliveries within the UK.
You can put used cartridges in your household recycling bin.
Replacement water filter cartridges for our Moby TF.
Water filter replacement cartridges for our Moby TBC which removes bacteria and chemicals from your water.
Improve taste and odour and remove chlorine, sediment and heavy metals from your mains water.
Water filter replacement cartridges for our Moby TMF. A taste, metals and fluoride mains water filter.
Water filter replacement cartridge for the Moby H.
Replacement Watts water filter cartridge for our Moby F.
5 micron carbon block water filter cartridge for a 20 inch housing.
High performance carbon water filter cartridge 4.5 x 20
5 Micron Carbon Block cartridge for our Moby mains water filter.
Green top Full Flow Chlorine Guzzler 4.5 x 10 inch cartridge for Big Blue housings
Replacement water filter cartridge for our Moby M taste and metals mains water filter.
Water filter replacement cartridge, manganese activate zeolite for iron reduction. Free UK delivery.
NO LONGER AVAILABLE - LOOK BELOW FOR OUR RECOMMENDED ALTERNATIVE
10 micron carbon block water filter cartridge for a 20 inch housing.
Replacement water filter cartridge for our Doby M taste and metals mains water filter.
Replacement water filter cartridges for our Doby Taste and Fluoride Filter
Replacement water filter cartridges for our Doby TMF Filter
Replacement water filter cartridge for our Doby Fluoride Filter
Replacement water filter cartridge set for our whole house Doby water purifier.
Replacement water filter cartridge set for our Moby water purifier.
Replacement Carbon Cartridge for HydroTAC
Replacement Carbon and TAC Cartridges for HydroTAC and TurboTAC
Replacement NanoCeram PAC cartridge for Tap Water Filter Pearl
Granular Activated Carbon media for Fountain Filters' HiFlow Water Filters
You can tell if the seals start leaking, which is obvious, we know.
Even if there are no leaks you may find that the profile of the O ring becomes flattened because of prolonged time under compression. The cross section should be round and if it's not it may not seal easily.
However, we recommend that you replace the O rings every two or three years as a precautionary measure.
One of the main reasons for changing O rings periodically is that as they age and compress, the housing bowl needs to be tightened excessively. That leads to difficulty loosening the bowl from the cap next time the cartridge needs to be replaced.
What our customers have to say about us
18 Oct 2023Great 3-way tap, which was well packaged, with clear instructions. Our plumber commended the tap as good quality and easy to plumb in and connect to both water supply and under-sink filter. Looks brilliant in our new kitchen. Thanks to Fountain Filters for a helpful website and speedy delivery service.
12 July 2023Great product, simple to install including hints on common installation challenges which I did have and overcame instantly because of the care taken by the seller. Whole of house now has soft water without a noticeable drop in pressure. Has made a massive difference throughout.
1 Dec 2023It was a small but important order: replacement o-ring with silicon for my water filter housing. when I told them I had not received the articles after 7 days, they without fuss dispatched a replacement with the result I received the original and replacement 3 days later! Very responsive customer service.
17 June 2023After moving into a property with a fresh water supply, I turned to Fountain Filters for advice on replacing the water filter system. I purchased the Moby Twin Sediment System and it has been a worry-free system. Even changing the filters was far easier than the old system. Cannot fault this company on speed of service or quality of advice.
We're here to help! Our dedicated helpline is ready to answer your questions and provide solutions.
Free standard delivery in the UK on all water filter products.
Shop with confidence knowing our water filters have a 12 month guarantee.
Change of mind? Exchange or return any product easily.
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Fountain Filters, Strowger House,
Sandy Lane Ind. Est.
Newcastle upon Tyne, NE3 5HE, UK.
https://w3w.co/pipes.ranked.dates
VAT Reg: 370859370
