CO-Z Water Distiller, Stainless Steel Distilling Pure Water Machine for Home Countertop Table Desktop, 4L Distilled Water Making Machine, 4 Liter Water Purifier to Make Clean Water for Home

This is an essential piece of kit for Obstructive Sleep Apnoea sufferers using CPAP therapy. I was diagnosed in January and picked up my CPAP machine in February. As I have really bad Allergic Rhinitis, they recommended that I get a CPAP machine with a humidifier circuit and water reservoir [AirSense 10 Elite Autoset].The nurse told me I could use boiled water in the reservoir, but all of my research on CPAP machines indicated that this would not be pure enough and would damage the machine as well as potentially cause respiratory infections. Boiled kettle water is not free from mould spores and other organic and inorganic matter and minerals, the boiling process doesn't kill or remove them and the water, if you're in a hard water area like me, is still full of limescale. As you're using the boiled water from the kettle and it isn't being filtered through anything, rather than using the steam, which is later condensed and then filtered in a distiller, boiled tap water has all of the impurities of standard tap water.After a mere three days of using boiled water in the CPAP machine reservoir, a white limescale mark started to show in the tank.I immediately bought one of these distillers and honestly, it's a fantastic piece of kit. I have been distilling and using my own water for over two months now, almost three, and there's no limescale build up whatsoever in my CPAP machine. Unlike simply boiling water, the distillation process means that the water you end up with is free from mould spores and limescale and is extremely pure. This is further evidenced by the gunk that is left behind in the distiller's main tank once the cycle has ended. All of that gunk in the tank is what is in your tap water and what you were breathing in via your CPAP machine if you used boiled tap water.All of the CPAP and OSA sites recommend distilled water, so I thought this was worth the investment. The hospitals and nurses tend to recommend boiled tap water because distilled water is extremely expensive in the long term. However this device is well worth the investment to extend the life of your equipment, protect your respiratory system and save money on distilled water. The distiller pays for itself in no time as pre-bottled distilled water is extremely expensive and often the jerry cans are very difficult to open due to overtightening. I've had to return a few that could not be opened even with a jar opener because the caps were fused shut.I have distilled about eight 3.5L loads so far for use with my own CPAP device and my father's. Neither one has any limescale build-up anymore and I feel better knowing that I'm not breathing in as much rubbish.The distiller is very efficient, creating around 3.5L of distilled water from 4L of tap water. It only takes a few hours and you can see that the distilled water is crystal clear. The equipment is very well made, solid and sturdy, but because of a few bad reviews, I opted for the additional three year breakdown and accidental damage cover for £14.49. I haven't had any issues with the distiller but the peace of mind of having three years of cover is fantastic and at that price, a steal.I've cleaned the device once using the descaler crystals and they worked perfectly. Even the hardened limescale was stripped off and it was like new again.My only criticism is that the instruction manual translation [it's from China I believe] is very poor and can be a little confusing. Thankfully the product is very basic to use and it's all self explanatory. A single button activates the distilling cycle and it automatically turns itself off when the jug is full.I paid £22 for 11L of distilled water before buying this distiller and I've made 28L myself, with another two loads of 3.5L each being required at the end of the week. The distiller is paying for itself at an incredible rate. At this rate it'll have paid for itself within four months and then it's saving me money on expensive distilled water. With the three year cover, I've got a few years worth of distilled water I can make at no cost.I highly recommend that people distil their own water for use with CPAP machines, as per the recommendations on all of the CPAP websites. It makes a visible difference and extends the lifespan of your CPAP equipment by preventing limescale build-up. It also helps to prevent rare cases of pneumonia, should your water have mould spores or other nasties.Please see this useful explanation from a water treatment website:'Distillation is one of the oldest methods for creating pure water. Filtered water is heated until it has evaporated, turning into steam. This steam is collected in a sterile container, where it condenses and becomes water again. Because water has a lower boiling point than most contaminants (including minerals), they are left behind when the water turns into steam. The resulting water is, therefore, very pure. In addition, some water is double or triple distilled, with the condensed water being boiled and condensed a second or third time.Organic materials and inorganic minerals are the most common impurities found in water. The organics can typically be removed via filtering methods, including physical filters, carbon filters, and reverse osmosis (RO) membranes. After this pre-treatment, the water is sent through a DI system, which contains two types of resin: cation and anion. These two resins attract positive and negative ions, respectively, replacing them with H+ and OH-. H+ combined with OH- becomes H2O – water. The combination of filters and DI resins can remove nearly all contaminants.'I highly recommend this kit. It's use goes beyond CPAP machines and distilled water is useful for healthcare devices, cosmetic devices, steam irons and more.

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.