calmat,is a new unique alternative to water softeners. Calmat is an eco-friendly water treatment system that protects your piping system and appliances against scale deposits and rust. The Calmat-Impulse-Technology is based on the principle of physical water treatment. Special electronic impulses change the crystallization process of the liquid calcium. This way the hard scale loses its adhesive power. The technology works exclusively with capacitive electric impulses: no use of any salt or chemicals.



  • calmat_pipe_scale

  • Gentle reduction of scale deposits in the whole piping system
  • Calmat works totally maintenance-free
  • Calmat works without salt or chemicals
  • Calmat prolongs the lifespan of household appliances. Less time and money spent on repairs and maintenance in your home
  • Calmat retains important minerals in the water
  • Considerable savings in washing and cleaning agents
  • Faster cleaning of kitchen and bathrooms
  • Water pressure will be restored
  • High efficiency for your heating and hot water system
  • Calmat is suitable for all pipe materials
  • Calmat works without magnetic fields
  • Especially for use in private homes or small hotels, etc
  • Very low electricity consumption 3.25 W
  • Quality Made in Germany since 1948
  • Five years international warranty 

POP-display available, monitor with looped video and marketing material.

Customer Reviews

We are very happy with how much difference we see in the dishwasher, no water spots anymore. In the shower we also see a big difference on how shampoo works better, you just feel cleaner coming out of the shower. So yes we like what we see so far.


Murray Martin

Foxboro, Ontario

At about 4 weeks since we installed Calmat we stopped getting stains on our tubs and sinks. We used to have to take ours aerators off the taps once a week and knock the scale off of them, we have not had to do this since we installed the Calmat unit. Even my wife has started drinking the tap water again which she has not done in 25 years.


Dale McKinney

Hay Lakes AB


We have reduced the consumption of salt in our water softener to a ½ or 


Rosseau River MB

Calmat® easy Installation

The electronic water treatment system calmat prevents scale and rust deposits in pipes and devices. The unit is installed on the main water supply (e.g. close to the water meter)

The electronic control unit can be attached directly on to the pipe. This can be done either horizontally and vertically. It may also be placed on the wall.

1Place calmat on the pipe. Install calmat on the main water pipe and fix the electronic unit with the cable ties.
2Now place the red impulse cable in the left socket . Feed the cable to the back of the pipe and fasten with a cable tie. Wind the cable tightly and firmly around the pipe to create a coil. Plug the second impulse tie through the black loop at the end of the cable and fasten it.
3Repeat the installation with the second impulse cable again (see 2.).
4First connect the adaptor with the electronic unit with the socket on the left site of the device. Plug the mains plug into the power socket (permissible voltage: 87 - 260 V, 50/60 Hz). The green control light will light up. The display will show: calmat
5Set up your program:
Please choose your language with the upper button (>). Then press the button (P) to select the program according to your pipe material and pipe diameter (a,b,c, or d). You can change the program selection at any time later.
 6a) Metal pipe  Ø max 1“
b) Metal pipe  Ø max 1 ½“
c) Plastic pipe Ø max 1“
d) Plastic pipe Ø max 1 ½“

Water Hardness in North America

Water Hardness

Parts per million (mg/l)
grains per
gallons US
very soft1-701.0 - 4.21.0 - 4.00.1 - 7.0
soft71-1254.3 - 7.24.1 - 7.97.1 - 12.5
medium hard126-2507.3 - 228.0 - 1412.6 - 25
hard251-50023 - 3015 - 2125.1 - 50
extremely hard501 and more31 and more22 and more51 and more

Electronic scale protection - how does it work?

Calmat® is a physical water treatment system that does NOT use chemicals or salt. It does not change the chemical mixture of the water. Instead, it changes the physical characteristics of the scale crystals in a way that the scale particles lose their adhesive power. calmat does not need to have direct contact with the water and sits outside of the pipe. 

It treats the water with electric impulses which are generated in the electronic unit and are controlled by a computerized micro-chip. The signal-frequencies are transmitted via the calmat-impulse-cables that are wrapped around the pipe. The cables interact as pairs and form a frequency-field that changes the crystals in the water as it flows by.

Scale causes many problems

kalk_scale_red_crossBlocked piping systems
kalk_scale_red_crossDull surfaces and malfunctioning machinery
kalk_scale_red_crossHigh costs for heating
kalk_scale_red_crossHigh expenses for cleaning
kalk_scale_red_crossRust accumulation in the pipe that leads to corrosion
kalk_scale_red_crossBacterial growth in drinking water carrying pipes
How does Calmat solve all these problems?
Calmat stops scaling in pipes and appliances
Without the calmat water treatment, the scale particles in the water form sticky crystals that then build solid deposits. The patented calmat-Impulse-Technology modifies the crystallization of calcium and magnesium using the natural process of electrophoresis. The crystals become smoother and rod-shaped and can no longer attach to each other. Scale is now washed away in the water as a fine powder. The formation of new deposits is stopped. The more rod-shaped crystals that are created, the stronger the positive effect of scale-prevention.

Scale is removed faster than it forms. The natural surplus of carbonic acid dissolves the scale from the scale. Gradually and carefully, the deposits in the pipes will be removed.

The removal of scale = the removal of rust
As soon as scale deposits have built up, iron particles imbed into it. Thus, the scale and the rust blend into one material that are seen as red-colored deposits in the pipe. When the calmat-treatment dismantles the scale, it simultaniously removes all rust with it.
Clearing out the deposits is a gentle process where scale is brough back into solution and washed out in the water as as : calcium, magnesium and iron. It is absolutely save to drink as these are all healthy minerals.

Removal of scale deposits = removal of bacteria
We know that scale acts as a breeding ground for bacteria and other unwanted substances. As soon as calmat is installed and the scale is cleaned away, the bacteria breeding ground disappears. This way, bacterial contamination is greatly reduced or even fully removed.

Calmat protects against rust damage and perforation
Copper and/or iron oxidation occurs in all metal pipes through contact with calciferous (hard) water. These oxides seriously affect the pipe surfaces and may lead to corrosion.
The calmat-impulse-technology generates an electrophoresis-effect which produces a protective metal-carbonate layer. According to the material of the pipe, this layer consists of copper-carbonate, iron-carbonate or zinc-carbonate and settles on all shiny metal surfaces. It protects the pipe from aggressive substances which could lead to corrosion.

Money Savings in your Private Home

The use of the eco-friendly calmat water treatment saves you time and money from day one of its installation. It is a solid purchase for your home with a quick return on your investment. 
calmat saves money around your home
 kalk_scale_green_pointIt protects the whole piping system in your home
It reduces already existing deposits
It helps to protect appliances such as washing machines, dishwashers, water heaters, heating systems etc.
You save on maintenance costs and repairs
Filters, shower heads, fixtures and tiles stay clean
calmat saves on detergents, additives and fabric softeners

calmat® works exclusively with electric impulses only. The energy is simply taken from a power plug. We would like to distance ourselves from those devices that use the force of magnetism to treat water.

Why you should avoid magnetism When treating water
All magnetic-based physical water treatment devices want to produce electric impulses by induction.
This means that the magnet(ism) together with the water that flows through the pipe are supposed to generate complex electric impulses, this sometimes gets achieved. However, the following problems cannot be ignored:
Problem with Magnetism: Velocity 
The generation of a complex electric impulse field only works if the water inside the pipe flows by the
magnetic field in the exact right speed (velocity). If the speed is right, then the impulse is
generated. However, if the speed of the water is not right (too fast or too slow), the impulses are not generated or -worse- the impulses are generated wrong.
► We believe that it is the best to always provide the perfect and stable electric impulse field simply
by using constant electricity. Therefore, calmat® is solely electric. The annual power consumption is minimal and amounts to approx. 3-5 € (~ 5-6 USD). 
Problem with Magnetism: not all pipe materials can be treated equally good
As the magnet does not penetrate through metal very well, many distributors ask to install their units on plastic pipes. If the installation place is a metal pipe their recommendation is to cut out a piece of pipe and to replace it with a piece of plastic pipe.
► We believe that this is an unnecessary complication to work with magnetism as it limits the treatment
to take place on plastic pipes only.
Problem with Magnetism: Magnetism itself
Magnetism is a powerful force indeed. It is attributed with many positive effects on organisms. However, everyone also knows that magnets attract metallic objects, no matter how small. This again leads to a major problem when magnets are used on a piping system because of course the area where electromagnetic cables or permanent-magnets are installed is of course magnetic. Here, all magnetic particles in the water are firmly connected to the inside of the pipe. This happens on metal and plastic pipes alike. After only a short while the inside of the pipe is covered with a metal-dirt-particle-film that is a perfect breading ground (biofilm) for bacteria or other unwanted substances.
Many producers of magnetic devices therefore suggest to turn off the unit and “flush” the pipes every
six months as a solution to the problem. 
► We believe that building up a potential dangerous biofilm with magnetism in order to treat the piping
system is not a smart way to solve the scale-problem. Also, we know the need to clean the pipe with
flushing or brushing can be avoided. The answer is not to use magnetism

calmat® offers you a reliable eco-friendly water treatment system against scale and rust – without the drawbacks of magnetism.