We previously covered some of the available options for handling common issues caused by water hardness or more specifically the elevated levels of Calcium and Magnesium in the water.

Among the options we mentioned was water conditioners, a means of preventing the damage to water systems and pipework that is associated with scale and water hardness. Now we’re going to look a little closer at one of the more recent technologies that can help solve this problem.


Introducing Nucleation Assisted Crystallisation


Nucleation Assisted Crystallisation or NAC for short is a relatively new kind of technology to water softener.

NAC utilises glass coated media beads, these beads provide a surface that attracts the minerals in the water and forms stable and harmless crystals that are then released back into the water. Once the crystals enter the water, they will not dissolve or stick to any other surfaces, even those within hot water appliances.

Nucleation Assisted Crystallisation - NAC

The Benefits of NAC


NAC based systems have some distinct advantages over more traditional water softeners.

Nothing added nothing lost – By definition, water conditioners don’t add or subtract anything from the water, but alters the water in such a way that it becomes more preferable and better for the water system. Unlike salt and chemical based softeners, crystallisation devices don’t create any waste water and no backwashing is required. Since the minerals remain within the water and the water isn’t altered to the point of being undrinkable, this means you still get an amount of beneficial minerals with every drop.

Plug and play – The unit requires no power or assistance to operate, everything is operated by the pressure within the water network, simply install the unit into the water system and leave it to work its magic and due to there being no moving parts, there is no need for maintenance and will usually last for an average of 3-5 years.

Descaling – As well as preventing further build up of scale, the crystal abrasion during the water flow helps to gradually reduce any existing scale deposits.

Biocidal effect – The NAC process creates the conditions that water dissolved CO2 agglomerate to form micro-bubbles. These CO2 bubbles actively destroy bacterial membranes acting as a biocide. So along with the scale prevention it also helps to prevent Biofouling.