WS 100

The mobile WS 100 water softening unit prevents lime residue from forming on cleaned surfaces. This is achieved by an ion-exchange resin that removes the dissolved limescale from the water.

The WS 100 mobile water softening unit eliminates troublesome residues on cleaned surfaces. Depending on the region, varying degrees of lime residue can remain on photovoltaic modules after cleaning, due to hard water. This reduces the yield and should be avoided at all costs. For professional applications, Kärcher has two mobile water softening units that are easy to transport for installation between the tap and the high-pressure cleaner. A special ion-exchange resin removes the dissolved limescale from the water and reduces the degree of hardness to 0–1 °dH. This ensures there are no streaks or lime residue after drying. The exchange resin can be replaced at the touch of a button using the optional regeneration system. The WS 100 has a softening capacity of 10,000 l (at 10° dH).


Technical data

Inlet temperature (°C) max. 30
Connection thread M22 x 1.5
Weight (kg) 42
Weight incl. packaging (kg) 42,5
Application areas
  • Cleaning of solar panel systems
  • Generating soft water