The Calconditioner team standing in front of their office building, with the founder in the foreground.

About Calconditioner

Calconditioner is a Dutch invention that has been helping to combat limescale since 1992 – without salt, without maintenance, and without hassle. Our mission: to provide an effective and environmentally friendly solution for hard water, suitable for every household.

An intelligent invention from the Netherlands

The technology behind Calconditioner was developed and patented in the 1990s by Herman Koster. He designed an innovative method to alter the structure of limescale in tap water using electronic impulses – without removing or adding anything to the water.

Since 2007 owned by Calconditioner

In 2007, under the leadership of Niek Breur, we took over the company and the patents from Herman Koster. Since then, we have continued his work – with a strong focus on service, reliability, and direct communication with our customers. Our water softeners are fully produced in the Netherlands – and we are proud of that.

Why customers choose Calconditioner

✅ No salt or refilling required
✅ Maintenance-free: install once, and you’re done
✅ Suitable for homes, apartments, and commercial use
✅ Customer-focused support – even in the evenings and on weekends
✅ Sustainable alternative to traditional water softeners

Personal contact and commitment

We believe in honest advice and short lines of communication. We often respond to questions even in the evenings or on weekends. No call center – just direct service from people who know what they’re doing.

Want to know more?

Check our frequently asked questions or contact us for personal advice.