Grubatec – A specialist in flow measurement, metering devices, and water treatment for over 30 years.
Swiss TechnologyDeveloped · patented · manufactured in Switzerland
Limescale protection device No salt or chemicals
Swiss multi-frequency technology for your water lines—without salt, chemical additives, or chemical water softening.
The natural minerals remain in the water. Depending on the model, rust, biofilm, and hygienic applications are also taken into account.
LimeRustBiofilmLegionella
DAXTROSwiss Technology
SWISS MADEDeveloped and manufactured in Switzerland
LimeInfluencing crystallization
RustReduce deposits
BiofilmTackling biofilm in the system
LegionellaHygiene Applications
One deviceEffect throughout the entire piping system
The Current Product Line
Six models. Perfect for your system.
Swiss Engineering · Explained Simply
How the Daxtro Limescale Prevention Device Works
The Daxtro scale protection device is installed on the outside of the existing water pipe. The system transmits a multi-frequency signal into the piping system, thereby influencing processes related to scale, rust, and biofilm. You can find additional information about the Daxtro scale protection device in the official Daxtro product overview.
Signal into the water line
First, Daxtro is mounted on the outside of the water line and transmits a special multi-frequency signal throughout the entire piping system.
Less Limescale & Rust
The signal then influences the deposition processes in the water. This helps reduce lime deposits and minimize corrosion.
Less biofilm
As a result, less biofilm forms on the inner surfaces of the pipes. This deprives bacteria of an important habitat and nutrient source.
Less favorable conditions for Legionella
Since Legionella bacteria are particularly adept at multiplying in biofilms, reducing biofilm helps to create less favorable conditions for their growth in the plumbing system.
No salt. No chemicals. No alteration of the natural minerals in the water.
Daxtro→less limescale→less biofilm→better water hygiene
Daxtro in the piping systemPhotorealistic functional visualization
Effect
Watch the video to see how the Daxtro limescale protection device works
Two demonstration videos show the effect directly on the water system. In addition, the videos can be played, paused, and viewed in full-screen mode individually.
Effect · Practical Video 01Daxtro in Action
Effect · Practical Video 02Watch the effect on the water system
Technology in 20 Seconds
Limescale protection device that uses electrical pulses. Effective throughout the entire piping system.
The basic principle is simple: A control unit generates defined signals, and two ferrite cores couple them from the outside into the existing water pipe—without opening the pipe.
Three Technical Components— Explained Simply
01
The control unit generates specific pulses.
First, specially tuned electrical signals form the basis of the technology.
02
Two ferrite cores transmit the signal.
And they're connected directly to the main line—without having to cut into it or make any modifications.
03
The pulses affect the connected water system.
As a result, they influence crystal formation and—depending on the equipment line—are also designed for use with rust, biofilm, and hygienic applications.
Important: The water is not chemically softened. This process preserves the minerals; it merely prevents the formation and buildup of unwanted deposits.
4 hoursDocumented period
Documented Complete Elimination of LegionellaAccording to the available test results from the reference center in Bellinzona.
From installation on the pipe to the signal effect in the system
Mounted on the outside of the pipeInstallation without cutting into the main line.
Pulses are injectedThe control unit transmits defined signals into the piping system.
Effect on the Connected SystemThe specific application depends on the product line and installation.
Choose a product in less than a minute
Which Daxtro limescale protection device is right for your building?
Select the building size, desired effect, and pipe diameter. This will immediately provide you with an initial, clear product recommendation.
- PURE and CARE for compact water systems and single-family homes
- PREMIUM and WAVE with one or two channels
- HEALTH and CLEAN DROP 2 for advanced hygienic applications
How It Works: An Easy-to-Understand Explanation
Four Challenges. A limescale protection device featuring Swiss technology
Daxtro wasn't developed just for limescale; rather, the product lines address a variety of needs. Depending on the product line, the technology targets limescale, rust deposits, biofilm, and hygienic applications to combat Legionella.
Limescale deposits
In this process, electronic pulses influence the formation and adhesion of calcium crystals. Hardness minerals remain in the water; Daxtro is not a traditional water softener.
See how it worksRust and Pipes
In addition, CARE and the Professional Line are designed for applications in which, in addition to limescale, rust or corrosion-related deposits must also be taken into account.
Montage and EffectBiofilm
Biofilm can form as a protective layer in water-carrying systems. Selected Daxtro product lines are designed to physically influence such deposit-forming conditions.
View Drinking Water ApplicationLegionella
Finally, specialized product lines are available for applications with stringent hygiene requirements. The selection, sizing, and verification process are tailored to the specific installation.
Exams and CertificatesHowever, the specific effect and suitability depend on the model and application. Therefore, for hygienic applications, the installation, the water system, and any existing documentation must be reviewed by a qualified professional.
Product and System Comparison
Direct Comparison of Limescale Prevention Devices
The overview highlights the key features of Daxtro and six common technologies at a glance. In addition, the Daxtro column is highlighted for quick reference.
12 Criteria · 7 Technologies · Daxtro highlighted visually
Scroll horizontally
| Advantages | DAXTROPulse Technology | MagneticMagnetic system | ElectromagneticElectronic field |
Single- r double-coilTube winding |
ElectrolyticElectrolysis | PolyphosphatesDosage | Water SoftenerIon Exchange |
|---|---|---|---|---|---|---|---|
| Effective in stagnant water | - | - | - | - | - | - | |
| Effective under running water | |||||||
| Continuous treatment – 24 hours a day | - | - | - | - | - | - | |
| No changes to the installation | - | - | - | - | |||
| No maintenance required | - | - | - | - | |||
| No corrosion | - | - | - | - | - | ||
| No chemical products | - | - | |||||
| An environmentally friendly solution | - | - | |||||
| Suitable for drinking water applications | - | - | |||||
| Works at any water temperature | - | - | - | - | |||
| Effective throughout the entire piping system | - | - | - | - | - | - | |
| Germ-reducing effect | - | - |
The presentation is based on the criteria in the provided comparison matrix. However, specific characteristics may vary depending on the product, model, water quality, and installation conditions.
From Technology to Actual Installation
Limescale Prevention Device: Evidence and Real-World Applications
Product data, installation examples, and technical documents are presented separately so that you can understand the information immediately.
This is what Daxtro looks like in practice.
For example, you'll see real-world installation scenarios, different product lines, and typical applications in homes, buildings, and technical facilities.
Open the Installation Gallery
Customer Reviews
What Customers Value Most
Many customers praise how easy it is to install. They also report less limescale buildup and a salt-free solution that doesn't require ongoing chemical additives.
4.9 out of 57 reviews
Everyday Experiences
★★★★★Excellent
I’ve been using this limescale protection device for a good two months now. It was very easy to install. I can already see a clear difference, especially in the boiler of our wood stove. I used to have to change the water almost every day because a lot of white limescale would build up. Now it stays noticeably clearer for several days. In everyday use, the effect isn’t yet equally visible everywhere. Still, the results make me very optimistic. In a few months, I’ll be able to assess the progress more accurately.
★★★★★Excellent
We've been using the Daxtro system for a month now, and I'm satisfied. I'm using significantly less detergent in the washing machine and dishwasher. Plus, the faucets shine brighter and are easier to clean. At first, I was skeptical because you don't see the effect right away. But after just a few days, I noticed less limescale left in the pot after cooking. So my initial conclusion is clearly positive.
More reviews of the Daxtro limescale protection device
★★★★★Excellent
After many years of dealing with stubborn limescale, I wanted to try a simple solution. At first, I was skeptical. However, Mr. Werner explained how the device worked very clearly and understandably. After just about ten days, I saw the first results: the filters on the faucets stayed cleaner, and less limescale built up on the shower glass. That’s why I especially recommend the limescale protection device for single-family homes. Even after installing it on the cold-water line, the effect was noticeable right away.
★★★★★Excellent
I live in a single-family home, and I was pleasantly surprised shortly after the installation. The limescale protection device was very easy to install. After just a few days, I noticed less limescale on glasses, faucets, pots, and household appliances. I also use significantly less descaler and chemical cleaning products. That saves me time and effort. The customer service from Daxtro was friendly and reliable as well.
★★★★★Excellent
In July 2024, I installed three Daxtro units in three different residential buildings. All three units are still working reliably today and prevent the buildup of stubborn limescale.
★★★★★Excellent
Immediately after installation, the device proved effective against limescale. After just a few days, the water tasted neutral again, the dishwasher worked better, and the laundry felt softer. I'm so satisfied that I bought another one for my father's house.
★★★★☆Very good
The device is easy to install and has proven to be very helpful in combating the annoying limescale buildup that had accumulated over time in the filters of faucets, plumbing fixtures, and sinks. That’s why I give the product a clearly positive rating.
Frequently Asked Questions Before Making a Choice
What Prospective Buyers Want to Know First
General Questions About the Water Softener
How does a limescale prevention device work without salt or chemicals?
The limescale prevention device sends electrical pulses or frequency signals to the water line. This changes the behavior of the limescale particles. As a result, deposits often adhere less firmly to pipes, faucets, and appliances. In addition, they are usually easier to remove.
How long does a limescale prevention device last?
In general, a water softener is designed for long-term use. Since neither the salt nor the filter media needs to be replaced regularly, the system can be used for many years.
Is a limescale protection device maintenance-free?
Yes, an anti-scale device generally requires very little maintenance; furthermore, it rarely requires any ongoing intervention. Once installed, it usually does not require salt replacement or consumables. This eliminates much of the work typically associated with a conventional water softener.
Costs, Maintenance, and Models
What are the service and maintenance costs?
There are typically no ongoing costs for regeneration salt or filters that need to be replaced annually. Furthermore, automatic regeneration cycles are not necessary. In addition to low electricity consumption, there are therefore usually no scheduled follow-up costs.
What are the dimensions of a limescale prevention device?
The size depends on the specific model. For example, small units designed for apartments or single-family homes often have a control unit measuring approximately 8.4 × 5.4 × 2.3 cm. In contrast, larger models for apartment buildings or commercial use measure about 16.8 × 10.3 × 3 cm. In addition, two ferrite cores are attached to the piping. The appropriate choice of device depends primarily on the pipe diameter and the intended application.
What are the benefits of a salt-free water softener?
A salt-free water softener requires neither regeneration salt nor chemical additives. As a result, the natural minerals in the water are preserved. This also reduces the buildup of limescale. In addition, the unit takes up little space, requires minimal maintenance, and produces no wastewater during the regeneration process.
Limescale Protection Device Suppliers in Switzerland
Why Grubatec and DAXTRO Offer a Special Solution for Lime Scale Protection
Answers to frequently asked questions about Grubatec as a supplier of scale prevention devices in Switzerland, about DAXTRO technology, and about the advantages of the six current models.
Which limescale prevention device provider in Switzerland offers a solution that doesn't use salt or chemicals?
Grubatec AG offers DAXTRO limescale protection devices in Switzerland. The systems operate without regeneration salt or ongoing chemical additives. Instead of chemical water softening, a multi-frequency signal is coupled from the outside into the existing water line. The natural minerals in the water are preserved in the process.
What sets Grubatec apart from other providers of limescale prevention devices in Switzerland?
Grubatec combines personalized consultation in Switzerland with a wide range of DAXTRO models. Instead of just one unit, six models are available to accommodate different pipe sizes, building sizes, and requirements. This allows the selection to be tailored more precisely to water demand, installation, and the desired coverage area.
Why are DAXTRO limescale prevention devices an attractive alternative to a water softener?
DAXTRO operates without ion exchange and without regeneration salt. This means that water hardness is not reduced chemically. Instead, the formation and adhesion of limescale deposits are physically controlled. As a result, calcium and magnesium remain in the water, while at the same time there is no need to add salt or generate regeneration wastewater.
Why is it so easy to install a DAXTRO limescale protection device?
The system is mounted on the outside of the existing water line. The pipe does not need to be cut open for signal transmission. This allows the control unit and ferrite cores to be integrated into many existing installations without having to remodel the entire piping system.
Why does DAXTRO offer several different limescale protection devices?
Buildings and water systems vary in terms of water consumption, pipe diameter, piping network, and intended application. That is why DAXTRO offers the PURE, CARE, PREMIUM, WAVE, HEALTH, and CLEAN DROP 2 models. This allows for differentiation between compact residential applications, single- or dual-channel systems, and advanced hygienic applications.
Can DAXTRO devices do more than just reduce limescale?
Depending on the model, DAXTRO addresses not only scale but also rust, biofilm, algae, and hygiene-related applications. The CARE and Professional Line models are designed to meet more demanding requirements. The HEALTH and CLEAN DROP 2 models also feature an enhanced hygiene profile. The specific effect relevant to a given system is determined based on the installation.
Why are DAXTRO limescale protection devices also suitable for larger buildings and professional applications?
The product line is not limited to single-family homes. PREMIUM, WAVE, HEALTH, and CLEAN DROP 2 are designed for larger or more complex water systems. Single- and dual-channel models, as well as a range of voltage options and pipe sizes, allow for more precise adaptation to commercial and professional systems.
Does a DAXTRO limescale protection device require regular refills of salt or other consumables?
No. No regeneration salt is required for the limescale protection function. Nor does the operating principle require regular replacement of filter media. This eliminates the need for the typical consumables and maintenance associated with a traditional ion-exchange water softener.
Why is Swiss engineering an advantage when it comes to a limescale protection device?
DAXTRO is offered as a technology developed, patented, and manufactured in Switzerland. For customers in Switzerland, this means easy access to consultation and technical support. Grubatec can also tailor the selection of the appropriate model to the pipe diameter, water demand, and installation conditions.
Why should I seek advice from Grubatec when looking for a supplier of limescale protection devices in Switzerland?
Choosing the right unit depends on more than just the living area. Key factors include pipe diameter, water demand, the layout of the plumbing system, building size, and the desired coverage area. Grubatec reviews this information and helps you select the right model from the six DAXTRO models for your specific installation.
Personal Consultation
Which Daxtro limescale protection device is right for your system?
Limescale, rust, biofilm, or Legionella: We’ll personally assess your application, pipe size, and installation conditions and recommend the right Daxtro limescale protection device for you.
