PureFina 400GPD Undersink Reverse Osmosis Water Filter White

PureFina 400GPD Undersink Reverse Osmosis Water Filter White

£ 384.99 (incl. VAT)
Product number: 10045512
PureFina 400GPD Undersink Reverse Osmosis Water Filter White
£ 384.99 (incl. VAT)

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What is covered?
  • Ready for delivery In stock and ready for you! Order now and enjoy your purchase without delays. In stock and ready for you! Order now and enjoy your purchase without delays.
  • Shipping time: 3 - 5 days Receive it sooner than you think. Don’t miss this opportunity, order now! Receive it sooner than you think. Don’t miss this opportunity, order now!
  • 14 day cooling off period

Top features

  • Removes what shouldn't be in your water: The 5-stage reverse osmosis system filters out heavy metals, chlorine, bacteria, nitrates, and microplastics — down to particles smaller than 0.0001 microns — delivering water as pure as premium bottled water, straight from the tap.

  • Know exactly what you're drinking: The integrated TDS sensor measures water quality in real time and displays the reading directly on the unit, giving you a clear picture of your water's purity at any moment.

  • Tucked away, completely out of sight: The compact, tankless unit fits neatly under your sink and connects to your existing supply and waste pipes, with no equipment visible on the worktop. The included tap needs just a single hole for installation.

  • Filters that last — and easy to change when they don't: The PPC filter runs for up to 12 months and the RO filter for up to 24 months. When a replacement is due, the filter life indicator lets you know in advance, and swapping it out takes just seconds.

  • Cut your bottled water bill significantly: Regular mineral water buyers can save several hundred pounds per year by switching to the PureFina — which runs on just 80 W and can deliver up to 1,500 litres of filtered water per day.

Product description

If you've ever squinted at your tap water and thought I'd rather not — the Klarstein PureFina is your answer. This under-sink reverse osmosis system filters your mains water through 5 stages, removing contaminants down to particles smaller than 0.0001 microns. The result? Water that matches the purity of premium bottled water, straight from your kitchen tap.

Heavy metals, chlorine, bacteria, nitrates, microplastics — the PureFina removes them all. A built-in TDS sensor monitors water quality in real time, so you can see exactly what you're drinking. Filter life is displayed directly on the unit: the PPC filter lasts up to 12 months, the RO filter up to 24 months, and the system alerts you when a change is due.

The whole unit sits neatly out of sight beneath your sink. This tankless system connects directly to your existing water supply and waste pipe — nothing clutters your worktop. The dedicated tap included in the box requires just a single hole for fitting.

Particularly well suited to families with young children, older relatives, or anyone who wants to be confident about what they're drinking every day. If you regularly buy bottled mineral water, switching to the PureFina could save you several hundred pounds a year.

Get yours today and enjoy clean, filtered water on tap — every single day.

Features

  • Water output: 400 GPD / 1,500 litres per day
  • Filtration ratio: 2:1 (unfiltered to filtered water)
  • Flow rate: 1 litre per minute
  • 5-stage filtration: 1. PP filter (suspended particles), 2. Activated carbon filter (odours and taste), 3. High-precision PP filter (fine particles), 4. RO filter (dissolved substances), 5. Carbon filter (microbes)
  • PPC filter lifespan: up to 12 months
  • RO filter lifespan: up to 24 months
  • Quick filter change in seconds
  • Tankless system — connects directly to water supply and waste pipe
  • Dedicated tap included
  • Single-hole tap installation
  • Minimum supply pressure: 1 bar
  • Maximum supply pressure: 4 bar
  • Water temperature: 5–38 °C
  • Ambient temperature: 4–40 °C (indoor use only)
  • Operating noise: < 55 dB
  • Power consumption: 80 W
  • Power supply: 100–240 V~ | 50/60 Hz
  • Product type: under-sink water filter / under-sink filtration system
  • Power: 80 W
  • Volume: 500 litres
  • Reverse osmosis: removes contaminants from mains water
  • Under-sink installation: no visible unit on the worktop
  • Pressure vessel: filtered water available on demand
  • Water quality: removes contaminants and heavy metals
Product number: 10045512

Dimensions and Technical Details

  • Dimensions (filter unit): approx. 13.5 x 46 x 36 cm (WxHxD)
  • Cable length: 1.45 m
  • Weight: approx. 12.5 kg

What will be delivered?

  • 1 x water filter device
  • 1 x water tap
  • 1 x PPC filter
  • 1 x RO filter
  • Multilingual user manual

Delivery & shipment

Ready for delivery

Shipping time: 3 - 5 days

Customer reviews
15 Ratings

No review available for this item.

Product reviews from other countries
Verified review 19/11/2025

Poštovani,potpuno sam nezadovoljan proizvodom i odnosom korisničke podrške koja je sve ali nije podrška. Na pitanje zbog čega je protok vode na slavini jako loš ne dobivam odgovor osim "to vam je tako". Kod kupovine nije naglašen odnos kupi i misli se. Na žalost izgubili ste kupca koji će i druge savjetovati o vašim proizvodima. Hvala.

Dear, I am completely dissatisfied with the product and the customer support attitude, which is anything but supportive. When asked why the water flow at the tap is so bad, I get no answer other than "that's just how it is". When buying, the "buy and think" attitude is not emphasized. Unfortunately, you have lost a customer who will advise others about your products. Thank you.

Verified review 10/08/2025

Easy installation and good quality

Easy installation and good quality

Verified review 31/07/2025

Der Filter ist sehr wunderbar und das Wasser Geschmack ist einfach toll!

The filter is wonderful and the water tastes great!

Verified review 29/06/2025

Super Anlage. Funktioniert und erfüllt die Erwartungen

Great system. Works and meets expectations.

Verified review 27/05/2025

Es el tercer aparato de Osmosis que tengo y es el primero que compro sin bombona de almacenamiento. Estoy encantado porque me ha liberado mucho espacio debajo del fregadero.La calidad del agua es excelente. Con una buena presion y al ser de 800 GDP, el flujo de agua es constante y bastante rapido.Si ya has instalado otros sistemas de osmosis, la instalacion de este, te resultara facil ya que es identica a otros, pero si es el primero que instalas, te va a parecer un poco lioso, aunque en YouTube hay infinidad de tutoriales explicando como instalarlo.

This is the third reverse osmosis system I've owned, and the first one I've bought without a storage tank. I'm delighted because it's freed up a lot of space under the sink. The water quality is excellent. With good pressure and being an 800 GPD system, the water flow is constant and quite fast. If you've already installed other reverse osmosis systems, installing this one will be easy since it's identical to others, but if it's your first time, it might seem a bit confusing, although there are countless tutorials on YouTube explaining how to install it.

Verified review 27/05/2025

Es el tercer aparato de Osmosis que tengo y es el primero que compro sin bombona de almacenamiento. Estoy encantado porque me ha liberado mucho espacio debajo del fregadero. La calidad del agua es excelente. Con una buena presion y al ser de 800 GDP, el flujo de agua es constante y bastante rapido. Si ya has instalado otros sistemas de osmosis, la instalacion de este, te resultara facil ya que es identica a otros, pero si es el primero que instalas, te va a parecer un poco lioso, aunque en YouTube hay infinidad de tutoriales explicando como instalarlo.

This is my third osmosis system, and it's the first one I've purchased without a storage tank. I'm delighted because it's freed up a lot of space under the sink. The water quality is excellent. With good pressure and an 800 gpd, the water flow is constant and quite fast. If you've already installed other osmosis systems, installing this one will be easy, as it's identical to others. However, if this is your first time installing it, it will seem a bit confusing, although there are countless tutorials on YouTube explaining how to install it.

Verified review 17/03/2025

Sehr gute Filterung, aber kein Ersatzfilter im Lieferumfang enthalten

Excellent filtration, but no replacement filter is included.

Verified review 03/03/2025

Ich bin begeistert von diesem Wasserfilter. Er ist leise, liefert schnell saubergefiltertes Wasser und den Unterschied kann man schmecken.Im Lieferumfang ist alles dabei, kein Gang zum Baumarkt nötig, das mag ich.Info:Ich habe diesen Wasserfilter inzwischen über ein Jahr in Benutzung und nie Probleme damit gehabt.Bei dem Austausch des PCT Filters habe vermutlich ich einen Fehler gemacht und nicht die Reihenfolge des Reset beachtet, trotzdem wurde mir unproblematisch und kostenlos ein Ersatzgerät schnell geliefert. Das nenne ich mehr als perfekten Kundenservice.Noch'n schönen Gruß von "mir"

I'm thrilled with this water filter. It's quiet, delivers clean, filtered water quickly, and you can taste the difference. Everything you need is included, no trip to the hardware store required – I love that. (Note: I've been using this water filter for over a year now and haven't had any problems.) I probably made a mistake when replacing the PCT filter and didn't follow the reset sequence, but a replacement was sent to me quickly and free of charge without any hassle. That's what I call perfect customer service. Best regards from me!

Verified review 14/01/2025

Impossibile caricare il contenuto multimediale. Ottimo prodotto...Compatto nelle dimensioni, facile l’installazione per chi si applica spesso in lavoretti domestici, rubinetto dal designer moderno accattivante e funzionale per il controllo dei filtri. Acqua limpida e leggera.Lo consiglio vivamente!

Unable to load media content. Great product...Compact in size, easy to install for those who often apply themselves to household chores, tap with a modern, attractive and functional design for filter control. Clear and light water. I highly recommend it!

Verified review 20/12/2024

La documentation n'est pas très claire concernant le raccordement. Mais c'est simple pour l'installation. Compter 2 heures maximum.En service depuis 3 semaines,vraiment content de cet achat qui évitera beaucoup de bouteille dans le bac jaune.Je recommande cet article.

The instructions aren't very clear regarding the connection. But installation is simple. Allow a maximum of 2 hours. It's been in use for 3 weeks now, and I'm really happy with this purchase, which will save a lot of bottles from ending up in the recycling bin. I recommend this product.

Verified review 20/12/2024

La documentation n’est pas très claire concernant le raccordement. Mais c’est simple pour l’installation. Compter 2 heures maximum.En service depuis 3 semaines,vraiment content de cet achat qui évitera beaucoup de bouteille dans le bac jaune.Je recommande cet article.

The documentation is not very clear regarding the connection. But it is simple for the installation. Allow 2 hours maximum. In service for 3 weeks, really happy with this purchase which will avoid a lot of bottles in the yellow bin. I recommend this article.

Verified review 03/11/2024

Der Wasserfilter funktioniert einwandfrei und die Qualität des Wassers ist spürbar verbessert. Die Lieferung war schnell und das Gerät war gut verpackt. Der Verkäufer war sehr hilfsbereit und freundlich.Obwohl das Gerät etwas laut ist, musste ich eine Schall- und Vibrationsisolierung darunter anbringen. Ansonsten ist es sehr empfehlenswert für jeden, der sauberes und frisches Wasser schätzt.

The water filter works perfectly and the quality of the water is noticeably improved. Delivery was quick and the device was well packaged. The seller was very helpful and friendly. Although the device is a bit loud, I had to put sound and vibration insulation underneath it. Otherwise, it is highly recommended for anyone who appreciates clean and fresh water.

Verified review 05/05/2024

Super Filterung leises Motor. Ungefiltert ca 200, gefiltert 035. Negativ ist die Bedienungsanleitung , die Bedeutungen musste ich hin und her googlen . Die mühe hat sich aber gelohnt

Excellent filtration, quiet motor. Unfiltered approx. 200, filtered 0.35. The only downside is the instruction manual; I had to Google the meanings of the terms back and forth. But it was worth the effort.

Verified review 21/02/2024

De momento, muy bien. Es muy fácil de instalar. Lo complica el manual, que es super básico y muy, muy incompleto en todo. Resulta útil descargar el manual de la Philips AUT7006, que si no es la misma máquina, es extremadamente parecida. En la parte trasera de la máquina, hay una Salida o Entrada que viene con un tapón rojo e induce a confusión. Al parecer no tiene utilidad y se deja con el taponcito puesto. El resto es fácil: un desagüe, una entrada de agua de la traída y una salida de agua osmotizada. No trae la abrazadera para conectar el desagüe al tubo de desagüe del fregadero. Hay q comprarla a parte y mejor preverlo para no quedarse a media instalación. Sí trae la llave de 3 vías para conectar a la entrada de agua fría que cada uno tenga. En nuestro caso, no hemos usado el grifo que trae sino uno de 3 vías porque no queríamos perforar la encimera. El caudal es bueno. No es ruidosa a nuestro entender. A parte, como se deshecha el primer litro de agua q se produce cada vez, nosotros guardamos ese primer litro para regar y seguidamente llenamos botellas o una jarra de 4 litros que guardamos en la nevera y la vamos utilizando a lo largo del día. Con lo que el motor arranca poco, un par de veces al día, mañana y noche. No es una máquina para ir sirviéndote vasitos de agua directamente del grifo, ya q tendrías q desechar el primer litro cada vez y sería un dispendio absurdo de agua., ya que la máquina no tiene depósito. En nuestro caso buscábamos una máquina sin depósito, de flujo directo, por lo tanto cumple las expectativas en cuanto a la forma de funcionar recogiendo el agua una o dos veces al día. El sabor es muy bueno en nuestro caso. Hasta hoy, todo bien. Si hay cambios, actualizaremos la reseña.

So far, so good. It's very easy to install. The manual is a bit of a hassle, being extremely basic and incomplete. It's helpful to download the manual for the Philips AUT7006, which, if not the same machine, is extremely similar. On the back of the machine, there's an inlet/outlet with a red cap, which is confusing. Apparently, it's useless, so you leave the cap on. The rest is easy: a drain, a mains water inlet, and a reverse osmosis water outlet. It doesn't come with the clamp to connect the drain to the sink's drain pipe. You have to buy it separately, so it's best to plan ahead to avoid getting stuck halfway through the installation. It does come with a 3-way valve to connect to your cold water inlet. In our case, we didn't use the included 3-way valve because we didn't want to drill into the countertop. The flow rate is good. It's not noisy, in our opinion. Besides, since the first liter of water produced each time is discarded, we save that first liter for watering plants and then fill bottles or a 4-liter jug that we keep in the refrigerator and use throughout the day. This means the motor only runs a couple of times a day, morning and night. It's not a machine for pouring small glasses of water directly from the tap, as you would have to discard the first liter each time, which would be an absurd waste of water, since the machine doesn't have a reservoir. In our case, we were looking for a direct-flow, tankless machine, so it meets our expectations in terms of how it works by collecting the water once or twice a day. The taste is very good in our experience. So far, so good. If there are any changes, we will update the review.

Verified review 05/01/2024

Ich habe mir diese Anlage gekauft weil ich schon sehr lange Wasser aus den Wasserhahn trinke. Ich trinke Wasser nicht gerne, aber ich weiß das es gut für mich ist. Wir sind nach einiger Zeit dann schnell umgestiegen auf das Britta System, weil wir wussten dass das Wasser aus dem Hahn nicht besonders sauber ist. Dann habe ich viel recherchiert und siehe da, Wasser vom Britta System ist auch nicht viel besser. Da habe ich mir ein Elektrolyse Gerät gekauft um Schwermetalle und Verunreinigungen aus dem Wasser auszuleiten. Ich finde garkeine Worte dafür was ich feststellen musste. Wir haben das Leitungswasser und das Britta Wasser getestet. Einfach nur ekelhaft. Dann haben wir uns für diese Anlage entschieden. Und was soll ich sagen.... Super sauberes Wasser. Der Einbau war leicht. Alles zum anschließen ist mit dabei..... Nur das für den Abfluss nicht. Aber im Baumarkt wird man für 10 Euro auch fündig. Unter der Spüle ist genug Platz für die Anlage. Wir haben uns für den mitgelieferten Hahn entschieden, aber es gibt auch schon 3 Wege Wasserhähne. Die Anlage ist leise im Betrieb und schafft 500ml in 5 Sekunden. Ich bin total begeistert von der Anlage und kann sie jedem bedenkenlos empfehlen. Es muss nicht immer eine 1000 Euro Anlage sein.

I bought this system because I've been drinking tap water for a very long time. I don't particularly like drinking tap water, but I know it's good for me. After a while, we quickly switched to the Brita system because we knew the tap water wasn't very clean. Then I did a lot of research, and lo and behold, Brita water isn't much better. So I bought an electrolysis device to remove heavy metals and impurities from the water. I'm speechless at what I discovered. We tested the tap water and the Brita water. Simply disgusting. Then we decided on this system. And what can I say... Super clean water. Installation was easy. Everything needed for connection is included... except for the drain fitting. But you can find one at a hardware store for around 10 euros. There's plenty of space under the sink for the system. We opted for the included tap, but there are also 3-way taps available. The system is quiet in operation and dispenses 500ml in 5 seconds. I'm absolutely thrilled with it and can wholeheartedly recommend it to anyone. It doesn't always have to be a €1000 system.