







💧 Descale smarter, not harder — the future of water care is here!
The YARNA CWD48 is a cutting-edge capacitive electronic water descaler that uses patented 48V microchip-controlled electric pulses to prevent limescale buildup across your entire home plumbing system. Compatible with pipes up to 4 inches, it offers a salt-free, eco-friendly alternative to traditional water softeners, requiring no tools for quick DIY installation. Users report improved water quality, reduced mineral deposits, and extended appliance life, making it a smart investment for modern homes seeking hassle-free water maintenance.













| ASIN | B085ZYP5JD |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #77,675 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #39 in Whole House Water Treatment Systems #7,074 in Kitchen & Bath Fixtures |
| Brand | YARNA |
| Color | Multi |
| Customer Reviews | 3.9 3.9 out of 5 stars (2,608) |
| Date First Available | March 17, 2020 |
| Finish | Painted |
| Handle Material | Plastic |
| Included Components | Installation Kit |
| Installation Type | DIY |
| Item Package Quantity | 1 |
| Item Weight | 1.48 pounds |
| Item model number | CWD30 |
| Manufacturer | Guru Brands LLC |
| Model Name | CWD |
| Mounting Type | Wall Mount |
| Number of Handles | 1 |
| Package Information | Bottle |
| Part Number | CWD48 |
| Product Dimensions | 1"L x 1"W x 1"H |
| Size | CWD 48 - 4" Pipe |
| Supported Water TDS Level Maximum (PPM) | 350 |
| Voltage | 48 Volts |
| Wattage | 30 watts |
K**L
100 plus year old well water
This might be different unscientific take. These pics show my Airsense Cpap and the water by it or in it. Usually because my cpap requires distilled water, my well water here clouds up in one night in the humidifier and the heater pad is solid white. It's been well over a week without cleaning the chamber and look at the water. Still water and not a cloud. My refill glass is also 2 days old and no hardness. That's pretty good results and proof enough when you can go from every day cleaning to every other week or so..Pretty impressive for a 120 plus year old well and a easy to install device put in after my 5 micron sediment membrane. I researched and that was the most optimal for my really old house and well. Love it so far.
B**N
Don't believe the nay-sayers, I was skeptical but it worked
I was very skeptical this would work but thought I would give it a shot for the ease of installation and the cost. Prior to purchasing I read many reviews stating that these devices scientifically can't work and that they are just a scam. Well, I can confidently say that these nay-sayers were wrong even though they sounded very credible in their reviews. About 2 years ago my wife and I moved into a house on its own well, with all original plumbing since it was built in 1992. The water from the well was tested to be good when we bought the house and the previous owners raved about how good the water tasted, we agreed after drinking it. Although the water tasted great, it definitely had a lot of minerals in that caused a great amount of build up on all the faucets and also in the drains, causing flow issues. Even after we replaced the shower heads and remodeled the kitchen we had white mineral build-up within a month on the new shower heads and faucets, plugging the small spray holes and disrupting the flow. After installing this device I instantly noticed an improvement of the water feeling softer in when showering and washing dishes. It definitely lathers better and leaves your skin feeling less dried out. We have had salt water softeners in the past and it made the water feel very similar. After a few days it cleared out all the newer faucets/shower heads and started to break down the build up on the older original faucets. It even caused a leak in the the drain plumbing under one of the sinks because it broke down the mineral build up in the drain around one of the old seals (I was able to fix it by just taking out the sink drain and trap, cleaning it, and just reinstalling it). Additionally, the dishwasher is not leaving spots anymore and the stainless steel sinks have less spots. After a about week we've noticed all faucets are flowing better and and the old fixtures from 1992 are shedding lots of mineral build up. We can now delay replacing them until we do the bathroom remodels we have planned for the future. The kitchen faucets now spray as they are intended to without any plugged holes. We originally installed this device with the hope of cleaning out the mineral deposits in our plumbing that has built up over the years and hopefully restore some water pressure, and after the results I have already seen I am confident that this will accomplish that. Even though the device does not remove the minerals like a salt softener it definitely descales pipes and improves the quality of the water for our use. DON'T BELIEVE the people that say its a scam or the guys who says he's an electrical engineer and his wife has a few chemistry degrees and call it a pseudoscience scam. The proof is in the results! The only regret I have is not getting the next bigger model that is rated at pipe sizes larger than 1". I assumed my pipe feeding my pressure tank was only 1" but realized it was 1 1/4" when I went to install it. Instead of returning it for the larger one, I just installed it after the pressure tank where the pipe is smaller because I didn't want to spend any more money and I was very skeptical of it working anyway. Unfortunately I won't be able to descale the water going into the pressure tank unless I buy the CWD30, I may end up buying one later on since I am now a believer! Don't be afraid to buy this product this if your goal is to descale your pipes/fixtures, it will do that. Hopefully it will also improve your the quality of your water as it did mine. I typically don't leave reviews like this, but I would have appreciated a review like this when I was researching this product. I hope it can help someone else!
S**E
This System Does Not Work!
Why did you pick this product vs others?: At the end of 2019 I moved into my newly remodeled condo. I had heard about these electronic devices where you wrap wires around the incoming water pipe to make the water soft. At the time I thought this was a great idea to enjoy soft water without having to buy salt for a softener. Plus this option was less expensive than buying a complete soft water system. So I spent $350 and bought this unit. I installed it correctly. I used it for several years but hard water marks always built up on both my kitchen sink and bathroom sink. I was constantly having to clean it off. Then one day my shower head started making a singing noise. Then my toilet started doing the same thing. At this point I knew I was in trouble with my plumbing. Hard water buildup was causing this singing noise to come from both appliances. So the bottom line is - this device was doing absolutely nothing to soften my water! I ended up throwing this electronic de-scaler system in the garbage. Then I bought a real soft water system that uses softener salt and I have absolutely loved it! I no longer have hard water marks on both my kitchen sink and bathroom sink. So my advice is do not waste your money by buying this system but buy a real soft water system instead that works!
M**O
Yarna Capacitive Electronic Water Descaler System
I was looking for a way for me to limit the scale in my hot water heater because it was full of scale and I had to change the elements. There is a large amount of calcium in the water here that causes water spots and calcium deposits around the faucets. The fact that I can hook this up by just winding wires around a pipe makes this the perfect solution to my issues. This will be valuable to anyone who has hard water and no way to install a water softener. I paid $80 for this. This came in an attractive box with a link to an educational video on how to install. Everything was included for installation. Delivery time was 4 days with prime membership. Installation was tricky for my set up here. My pipes are tight against the wall and that made it difficult to wrap around. Several times I lost my hold on the wire and it unraveled so I needed to start over. Then when it was wound all the way, I didn’t have the tie in reach, so I had to start over again. So, installation for me was not an easy process, but not impossible. I finally got it all wrapped with ties in place and it hasn’t moved since. I don’t notice much of a change in the “feel” of the water. I do notice that I don’t have as many spots to clean or as much of a build up around the sinks, so I do believe it is helping. The real test will be next year when I do my maintenance on my hot water heater. I will be interested to see how much sediment is in the bottom of my water heater and if when I drain it chunks of calcium deposits are flushed out. I will say I can tell it is doing something because the spots are fewer than I used to have. I am hopeful that it will be useful in the long run. If it cuts down on the sediment, it will be worth everything I paid and more.
S**.
We have had the Yarna CWD24 Water Descaler installed for about a few months now and have noticed a large decrease in the amount of sediment in our water kettle. It is a clear glass kettle and had deposits that had to be scraped off before. Now, there are still some noticeable white chalky sediments, but they wipe off with a paper towel. The longer the unit is installed, less sediment is showing. Also have noted the water in the shower feels softer. Spring especially gave us an odor with our well water and that has really gone away too. Very happy with these easy changes. Looks like it will keep improving our water as time goes on with the unit installed as we have an older home with older pipes. Installation was simple. Have tape handy to hold down the ends if you are installing alone! Very happy with this very affordable purchase and its effectiveness.
U**.
Fácil instalación. Si reduce significa mente el sarro
L**S
quiero preguntar concretatemente, si los leds dejan de encenderse, el equipo ( descalcificador ) deja de funcionar porque ya no prenden o sea ya se descompuso?, como puedo comprobar si está trabajando correctamente, agradezco la atención que se sirvan darme
G**A
I recently moved to a new city that has moderately hard water. Many of the older homes have water softening systems that require large tanks and consistent maintenance by adding salt to keep appliances free from limescale build-up. Through research, I came across these systems that do not add salt to the water but use electrical currents to change the composition of the water to reduce limescale build-up. The YARNA water descaler system is well constructed, easy to install, and noticeable reduces and eliminates the water scale build-up that was appearing weekly. It does take a couple of weeks to notice the difference but then the system keeps the water quality without the need for maintenance. Top-quality purchase, highly recommended!
A**I
Great little device. Easy to install. It is installed on 1" coper line. The water hardness level in my area is 28-30gpg which is extremely hard water. We have a water softener that successfully softens the water but there is a big problem with the amount of salt being introduced to our treated water. So now my water softener is set to a lower number and we get about 7gpg hardness after it (compared to almost none before). Because of the Yarna Descaler the current "harder" water is more manageable now. No more hard white deposits on bathroom or kitchen faucets. The water droplets still leave white powder behind if let dry, but this powder wipes out easy. When I was looking for the descaler I wasn't able to find max flow characteristics for most of the devices, so I opted for the the most powerful device that works with biggest pipe diameter. Maybe it is an overkill for my setup but it works and I'm happy with the result.
Trustpilot
2 months ago
5 days ago