Customer Complaint for Ketsch

Well-structured complaint management enables us to proactively address issues and challenges, improve the customer experience, and gain valuable insights to continuously optimize products and proces

Please note the following process for complaints/warranty claims for Hengst Filtration GmbH (Ketsch site):

  1. Please fill out the Form completely.
  2. If you want to add pictures or videos, please use the following e-mail address: c-quality.ketsch[at]
  3. When using mobile devices, please scan the QR code.
  4. Our quality management will check your complaint and give you a first feedback within 24 hours (Monday - Friday).

Should you require any further information or have any further queries please contact us on the above email. We will be happy to assist you.

Contact us

Hengst SE
Nienkamp 55-85
48147 Münster
© 2024 Hengst SE

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purifying our planet

Our vision

We make the planet a purer place with our products. We also take this journey as cleanly as possible.


We develop the filtration solutions of the future. For our customers and for society.


Our focus is on energy efficiency. This protects the environment and saves costs.