- Brand: CO-Z
- Material: Stainless Steel
Overview
The 4L Water Distiller Machine by CO-Z is designed to purify water effectively, filtering out impurities and organic contaminants to provide you with clean, safe drinking water. With a capacity of 4 litres, this stainless steel purifier is ideal for home use, ensuring you have access to distilled water for various applications such as cooking, filling humidifiers, or even for use in dental clinics and laboratories.
This countertop water distiller operates efficiently, purifying water at a rate of 0.3 gallons per hour. Its automatic shut-off feature enhances safety by preventing overheating, making it a reliable choice for anyone seeking a convenient and effective solution for cleaner water. Whether you’re a health-conscious individual or simply looking to improve the quality of your drinking water, this distiller meets your needs with ease.
Key benefits
- Purifies water effectively, filtering out impurities and VOCs.
- Automatic shut-off feature prevents overheating for safe operation.
- Includes activated carbon filters to remove organic contaminants.
- Convenient handle design for easy water addition and cleaning.
- Durable 304 stainless steel construction ensures long-lasting use.
- Easy maintenance with included cleaning powder for sediment removal.
- Compact countertop design fits seamlessly in any kitchen or office.
- Produces 4 litres of purified water, ideal for various applications.
How to use
- Place the water distiller on a flat, stable surface, ensuring it is securely positioned with the nonslip base.
- Fill the collection pot with water up to the recommended level.
- Connect the power cord to a suitable electrical outlet.
- Press the power button to start the distillation process; the machine will automatically shut off when the water level is low.
- Once the process is complete, carefully remove the collection pot using the handle.
- For maintenance, use the included cleaning powder to clear any sediment or limescale build-up as needed.
- Follow the instructions provided for any additional cleaning or maintenance steps.
Specifications
- Brand: CO-Z
- Model Number: DWD40UKRD
- Item dimensions L x W x H: 23L x 23W x 39H centimetres
- Weight: 3.6 Kilograms
- Material: Stainless Steel
- Capacity: 4 litres
- Power Source: Corded Electric
- Included components: Water Distiller, Collection Pot, Power Cord, Cleaning Powder, Activated Carbon Filters, Collection Cap, Storage Cap, Instructions, Water Distiller, Collection Pot, Power Cord, Cleaning Powder, Activated Carbon Filters, Collection Cap, Stora…
- Manufacturer: CO-Z
- SKU: B08K8NNWLP
- Container Type: Pitcher
- Installation type: Countertop
- LowerTemperature Range: 150 Degrees Celsius
- Material type: Stainless Steel
- Maximum flow rate: 0.05 Gallons Per Minute
- Model name: DWD40UKRD
- Other Special Features of the Product: Automatic Shut-Off, Reduce TDS, Taste Enhancer
- Package Information: Pitcher
- Purification method: Activated Carbon, Distillation
- Special feature: Automatic Shut-Off, Reduce TDS, Taste Enhancer
- Special Features: Automatic Shut-Off, Reduce TDS, Taste Enhancer
- Supported Water TDS Level Maximum (PPM): 6
- Upper temperature rating: 150 Degrees Celsius
What’s in the box
- Water Distiller
- Collection Pot
- Power Cord
- Cleaning Powder
- Activated Carbon Filters
- Collection Cap
- Storage Cap
- Instructions
FAQs
What is the capacity of the water distiller?
The water distiller has a capacity of 4 litres.
What materials are used in the construction of the water distiller?
The water distiller is made of stainless steel and features a food-grade glass collection pot.
What special features does this water distiller have?
This water distiller includes automatic shut-off, reduces TDS, and enhances taste.


carlos zacarias vera –
Que funcione perfectamente.
Esta funcionando correctamente, me parece una buena compra.Es la 2ª destiladora que tengo y esta mucho mas lograda que la 1ª.Buen aparato.
David –
En general una buena compra, pero el contenedor NO ES BPA FREE
En general una buena compra, pero el contenedor NO ES BPA FREE
Adrian –
Súper recomendable, la mejor inversión para la salud que debes hacer!
Encantado con mi destiladora, increíble todo lo dañino que consumimos y que se queda en el fondo de la destiladora! Lástima que no pueda subir el video donde quedan los residuos, incluidas los de las compañías que venden agua en México! Realmente ya ni para lavar las verduras utilizo agua de la llave, uso agua destilada en su caso. En verdad no dejen pasar este producto que debe ser indispensable en todos los hogares!
DVB –
29 months in, this distiller is still working great!
JANUARY 29, 2025 UPDATE:This distiller has now seen 29 months of constant use. During winter, it makes two full 1.6-gallon jugs of distilled water daily. In addition to my CPAP machine’s humidifier, we have three ultrasonic humidifiers that we use exclusively with distilled water, so needless to say, this distiller is kept VERY busy. At this point, we’ve probably saved at least $2000, and quite possibly much more than that, by not having to buy jugs of distilled water. It’s paid for itself many times over.OCTOBER 13, 2024 UPDATE:This distiller is still humming along, 26 months post-purchase. It runs almost daily, sometimes multiple times per day. It has saved me a tremendous amoung of money, both at the cash register – for jugs of distilled water – and by preventing mineral crusting damage on my ultrasonic humifidiers.Note that I have replaced the stock power cord with a 2-foot 14AWG power cord (NEMA 5-15P to IEC-320-C13) after observing that the original cord would get VERY warm at the ends. Since replacing the cord, the ends no longer get warm. Something to consider.ORIGINAL REVIEW:Five months in, this distiller is still working great. We use the water in both my CPAP machine and an ultrasonic humidifier, and it has no problems keeping up with the demand.Some observations and tips:I have the 1.6-gallon unit and it takes 6 hours from power on to completion when cold water is used. If I start with hot tap water, that time is reduced by about an hour. I don’t usually make the full 1.6 gallons, however, since it requires allowing the unit to boil dry (I address this below).The user manual may lead some people to think that the button on the front is a START button that must be pushed to begin the distillation process, but this is not the case. That button is a RESET button, which must be pressed if the unit trips. The user manual assumes that you will allow the unit to run dry each time, thus causing the unit to overheat and trip. And because they assume that you will allow the unit to trip, they also assume that you will be starting each cycle needing to reset that tripped condition.Continuing in that vein, it is my recommendation that you do not allow the unit to run dry. Why not? Because as the water boils out, the mineral content in the boiler is getting more and more concentrated, to the point that what remains is a sort of mineral-rich slurry. This slurry will start to cement itself to the bottom of the boiler in any case, but it is a much worse problem if the unit is allowed to boil dry, making cleaning an even more unpleasant task. Rather than allowing the unit to boil dry, consider buying a digital timer (or even a smart plug), figure out how long it takes to distill 1 to 1.2 gallons, and then use that timer to stop the unit before it can boil dry. Or, if you know you will be at home when the unit has finished creating the amount of distiller water that you want, set a timer on your smart phone and then simply turn the unit off (using the rocker switch on the back of the unit) when the alarm sounds.Be careful with the AC power sockets on the rear of the unit; they are not as sturdy as you might think. There is a fair amount of flex to them and if you don’t handle them gently, you might break a socket. When unplugging the cords from the unit, don’t try to pull the plugs straight out. Instead, simply wiggle the plugs slightly as you gently pull, and work them free that way.Be sure not to get water in the power sockets or switches when filling the boiler. Always check to make sure that everything is dry before plugging the unit back in. When I fill the boiler, I set it in my bathtub with the reset button (front) and power sockets (rear) oriented so that they are not facing the faucet. This way, if any water splashes the electrical bits, it is minimal, and I can just wipe it away quickly with a dry cloth.The stainless steel spout on the upper housing is a bit loose-fitting (or at least it was on my unit). It is a friction fit and doesn’t like to stay in place. You can position it as required, only to have it come loose just by bumping it slightly. It will also come loose if you lift the upper housing that holds the coil and fan. This happens because the tab that holds it in place merely rests on a shallow plastic ridge, and it is held there under minimal tension. The tab, when disturbed, has a tendency to bypass the plastic ridge because of the loose fit, and once that happens you have to remove the entire upper housing and reseat the spout. Very annoying. The solution to improve the fit is to bend the curved stainless steel tab on the spout slightly so that it is a wee bit straighter than its curved, from-the-factory shape. This will elongate it just enough to increase the tension and give it a tighter fit.The cleaning powder that comes with the unit is surprisingly effective. Put an inch or two of water in the unit, add a couple of tablespoons of powder to the water, and let it boil for maybe 15 to 20 minutes with the upper housing removed (and unplugged). Before the cleaning solution has a chance to boil out, power the unit off and use a wooden spoon, a heat-friendly plastic scraper, or a wok brush to further loosen the crud, taking care not to splash yourself with hot water. Then unplug the unit, rinse it out, and then repeat the process as needed. Doing this once a month or so should be sufficient.People have wondered about the tube that is included with the distiller. As far as I can tell, you would use this if you wanted to distill water into containers other than the polycarbonate jug included with the unit. The puzzling thing, though, is that unless you are distilling water into a very short container, you would probably need to elevate the distiller to have the container clear the stainless steel spout. Strange.You will likely grow annoyed with the carbon filter packets. They’re fiddly and they break open, and honestly, depending on your water source, they may not even be necessary. Here’s what one site has to say about them:”There are a couple of contaminants that can convert to gas with water, namely benzene and VOCs. Most distillers use a small activated carbon filter at the spout, which removes these contaminants as water drips down into the holding container.”So, if you are fairly confident that your water is free of these things, and you’re mostly distilling to get rid of minerals that would otherwise leave deposits on expensive equipment, you could probably forego the carbon filters. That’s my situation, so I doubt I will be ordering more.Overall, I am happy with my purchase, and I feel confident that I can recommend it to others. It is a cost-effective way to not have to be dependent on supermarket stock, which I think is even more important now, given that inexpensive “store brand” distilled water isn’t always an option (one national brand is selling for $3/gal).
Marisa M. –
This product came within 2 days of ordering it. It was well packaged and had all the components inside that were supposed to be there, which were a packet with the handle for the collection jug, three charcoal filters plus one already inserted into the spout of the machine, and a small container with the cleaning crystals. The machine works very well and efficiently. The machine is well made, robust and finished off to a high standard. The top inside of the lid of the machine will discolour slightly with a feint mottling, which does not come off with vinegar, but it seems to ahave not gotten any more discoloured so I think it is just a reaction of the metal to the steam that comes through it. I don’t believe this affects the taste of the water in any way.The noise level is certainly quieter than my microwave and it takes 2 hrs and 15 minutes to get approximately 3 litres of pure distilled water if the water is put in already boiled.The cleaning is easy if done after every full distillation, otherwise if you run it even for one time without cleaning it again, the crust of the scale and leftover deposits is much harder to clean off. I personally use neat white vinegar in a spray bottle so that I can squirt the sides directly and leave for a minute then wipe of and rinse it twice. On the bottom of the drum I do the same but leave for 3 minutes and then wipe and rinse thoroughly. Over all I am very pleased with this machine and it does what it is supposed to do.The only thing that was a little bit of a hassle was the way the handle on the collection jug was designed to be put on. The various videos that show the CoZ Distiller, seem to have a different design for attaching the handle of the jug, so this could be a design change that my version did not incorporate. I had to find a way to keep the high tension stainless steel bands that go around the jug to stay put whilst I added the square washer and then placed the handle over both top and bottom bands and then hold it there and screw them in at the same time. I managed it by getting some green plastic gardening wire to hold the ends of the bands in place in order to stop them from springing back. This method worked very well although if you are not good at problem solving you might find it a bit tricky. I think it is good that they have changed the design for assembling this part of the jug.The first two runs of the machine , the water did taste a bit chemically, but I am sure that this was due to the brand new charcoal filters. Now the water is perfect and slightly sweet tasting, and really does not taste of anything nor smell of anything!Overall I am very happy with it and I have now been running it for a week and each day I run it the water tastes perfect. I hope this review is helpful.
Clement –
UPDATE 21/03/2024————————-I am returning the distiller tomorrow. The fan developed a whining noise, which means something is about to break. And before it does, and since the return window hasn’t closed yet, it’s gotta go back. Also, the inside of the nozzle, where the filter goes, is beggining to show signs of rust.I’d say 90% of the appliance is made of pretty good quality parts and materials, but the other 10% is what really lets it down in the end. I’m gutted. I really wanted this to work. :(ORIGINAL REVIEW———————-I’ve been using the CO-Z water distiller since the day I received it, about 10 days ago.I read the whole manual, first thing after I opened the box and checked for any damages. It’s a very “distilled” (pun intended) version of the average manual for kitchen appliances, so it doesn’t take more than 10 minutes to carefully read and understand it all. And I heard that the manual has been written very slowly, which is perfect for people out there who are not fast readers (I’ll stop with the dad jokes now).One of the first things the manual says is to run the distiller a few times and discard the contents produced by it. You need to do it 2 or 3 times (filling it up with water each time, goes without saying), and then each time pour out the distilled water down the kitchen sink – meaning: NOT CONSUMING IT. This is done in order to clean up whatever residue/debris is left from the manufacturing process.Anywho, I am having nothing but joy (so far) with this distiller. The water comes out colorless, odourless and tasteless – the three main properties of potable water. I must say, this distilled water feels much fresher going down the gullet, than Volvic mineral water does. And Volvic is by far (in my opinion) the best bottled mineral water out there, and one I’ve been consuming for years, thanks to our rubbish local water supply and infra-structure, here in my neck of the woods.I have no idea if I, at some point, am going to run into the same problems other reviewers pointed out, such as rust and electrical faults. All I know is, I’m spending about 25 GBP a week in bottled mineral water, and this distiller cost me about 140 GBP, so it should pay itself off in a month and a half. If it lasts for a year before going legs up, then I’ll still be in the profit, even if I buy another one.One thing I haven’t accounted for, though: electricity usage. Right now I’m running the distiller every second day, but it’s a 3 to 4 hour cycle. I’ll be doing some maths on that to see how much my energy bill goes up.So there you have it, folks. This distiller works, the water is great, and so far I think it was worth the purchase. I may come back later and ammend this review if I change my mind about it.
L. L. –
I Highly recommend buying this unit!!
Ive been using this water distiller for a few months now. I bought because our small town has had 2 boil water alerts in a short time. It has paid for itself over & over again since Summer 2025. I’m so pleased with its size, shape & productivity.