Ninja Luxe Café Water Filter UK: Where to Buy, Price and Best Options

The filter you want is called Ninja Water Filters, 6 pack, model XSKFLTRINS6EUK, and it costs £24.99 from Ninja’s own UK store. On 14 August 2026 that page showed Out of Stock with a Notify me button, which makes this less a question about price than about patience.

There is also a second part most buyers do not realise they need, and a third product with a confusingly similar name that does something else entirely. Here is the whole picture, with prices read on the day.

Where can you buy the Ninja Luxe Café water filter in the UK?

From Ninja directly, at sharkninja.co.uk — and on the day we checked, that was the only UK source we could confirm. Note the address: ninjakitchen.co.uk now redirects to sharkninja.co.uk, so old bookmarks land somewhere different from where they used to.

We could not confirm a UK retailer other than Ninja itself listing the water filter six-pack. That is what we could verify, not proof that nobody stocks it — and Amazon is excluded on principle here, because it prices in the visitor’s currency and adjusts VAT by delivery address, so a number read from outside Britain is not a British price.

How much does the filter cost to run?

£4.17 a filter, and one six-pack is about a year of coffee. Ninja’s US listing for the equivalent part gives a replacement cycle of roughly two months, or about 60 brews.

Six filters at two months each is twelve months of cover for £24.99 — near enough £2.08 a month. Against a machine that lists at £549.99, the filter is not the part of this hobby worth economising on.

Does the Ninja Luxe Café ES601UK come with a water filter?

Not according to the in-box list. Marks Electrical, which sells the machine at £549 and had it in stock, lists what comes with it: froth jug with integrated whisk, built-in grinder, cleaning brush, a starter kit of portafilter plus single, double and Luxe baskets, funnel and assisted tamper, a cleaning kit of two cleaning tablets and a descaling tablet, a water hardness test kit, and a recipe guide.

No water filter. No housing. What you do get is the hardness test kit, which is the machine telling you politely that water chemistry is your problem to solve.

Do you need the water filter housing as well?

Yes, and it is a separate £12.99 part that is easier to get than the filters. Ninja’s description of the housing is specific: it “provides an easy insertion and removal of the water filter in the reservoir”, and it “includes a dial to track when you’re due to replace your filter”.

So the filters are inserts. They go into a holder that sits in the water tank, and the holder is the bit with the reminder dial on it. Buying a six-pack without checking whether you own a housing is the most likely way to end up with £24.99 of filters you cannot fit.

Which Ninja “filter” do you actually need?

Three different Ninja products have “filter” in the name and only one of them touches your water. This is the trap in the whole category, and the pricing does not help: two of them cost exactly the same.

Ninja describes the Permanent Filter as “a reusable filter that preserves natural coffee oils and small coffee particles to provide a robust flavor, similar to what you would experience when using a French press”. That is a coffee filter, an alternative to the £0.99 paper filters. It will do nothing about limescale.

The water filter is the one described as removing “fine and coarse particles to improve the taste of your espresso and reduce hard water buildup”, and Ninja’s UK page states it is compatible with the ES601UK.

What are the best options while the six-pack is out of stock?

Take the housing now and the filters when they return, in that order. The housing is in stock at £12.99 and is the part you need regardless; the filters are the consumable.

• Set the Notify me alert on the six-pack page. It is the only route we could confirm to the official part in the UK.
• Buy the £3.99 hardness test strip if your machine’s original test kit is used up. It tells you whether you are in a hard-water area, which is the thing that decides how much the filter is doing for you.
• Descaling is not optional in the meantime. The machine ships with a descaling tablet, and the cleaning tablets are £9.99 for eight. A filter reduces buildup; it does not replace descaling.
• On third-party filters, we have nothing to recommend. Compatible multi-packs are visible on US marketplaces, but we could not verify a UK seller or confirm what is actually in them, so this guide does not point you at one.

For completeness: the same model code, XSKFLTRINS6EUK, was listed as available on Ninja’s Irish store at €29.99 on the same day. That is a different market with its own delivery terms, and we have not checked whether it ships to Great Britain, so treat it as an observation rather than a purchase route.

Why is the US part number different?

Because the UK and US catalogues use different codes for the same job. In America the inserts are XSKFLTRINSR6PK and the housing is XSKWTRFLTRHOUS; in Britain they are XSKFLTRINS6EUK and 277UO600EUK.

That matters when you are searching. A US code pasted into a UK search box will surface American listings, US pack sizes and marketplace sellers rather than the part Ninja sells here. Search the UK code, or start from Ninja’s UK parts pages.

What this guide does not tell you

Whether the six-pack is back in stock by the time you read this. Everything here is dated 14 August 2026, and a Notify me button is precisely the kind of thing that changes without warning.

It does not tell you what the filter measurably does to your water, because Ninja publishes a description rather than a specification, and we have not tested one. It does not tell you which third-party filters are safe or equivalent, because we could not verify a UK seller. And it does not tell you whether your particular machine already has a housing fitted — that one you can settle in ten seconds by lifting the lid on the reservoir, which is worth doing before you spend £24.99.