HZI Steinmüller

Engagement & Compliance

HZI’s success is based on the trust of our customers, partners, suppliers, authorities, employees, parent company, and all other stakeholders. The integrity and transparency of the company’s and each individual employee’s actions are the pillars on which this trust is built. We therefore declare it our primary duty to comply with laws, regulations and standards and to adhere to the highest professional and ethical standards during all our business dealings.


Compliance Hotline for Reporting Misconduct

 To enable us to identify, investigate and, if necessary, sanction any misconduct, we have implemented a secure channel for reporting compliance violations.

All employees and external stakeholders can use the SpeakUp compliance hotline to securely report any such violations.


Simple, Anonymous and Secure

Our SpeakUp reporting system enables compliance violations to be reported around the clock by online form or by phone in 32 local languages.

You are free to make your report anonymously. The SpeakUp platform is managed by the neutral third-party provider People Intouch B.V. To protect the reporters, all communication is channelled through People Intouch. People who report a violation are protected from reprisals for having made the report.

In this PDF document you will find the contact details to report an incident.



Innovation Drives our Industry Forward, to the Benefit of All.

Made in Germany, HZI Steinmüller products and over 1.600 reference plants stand testament to our expertise. Every single one of our 200 employees works at our German headquarters or on-site at our many plants around the globe. Flexible, medium-sized, and dexterous, our company is conjoined with the Swiss-Japanese Hitachi Zosen Inova Group. A vast network of stellar professionals and partners helping us to exceed global demands. 

“How can the quantities of waste arising be treated in an environmentally friendly and energy efficient manner?”

Progress Requires a Foundation to Support the Growth.

Our plants offer a solution to one vital question of our century: “How can the world’s waste be treated in an environmentally friendly and energy efficient manner?” Progress requires a foundation to support the growth. The journey can only be made possible by highly qualified employees, who are supported by a well-established process, and accompanied by all necessary certifications. It goes without saying that we work on the basis of a management system in accordance with DIN ISO 9001.

What particularly distinguishes us from others is that we are a certified boiler manufacturer (2014/68/ EU, Annex III module H1) and can build according to ASME standard. HZI Steinmüller also has one of the lowest accident rates on the construction site.

Please Take a Look at Our Moving History of Innovation through More than 150 Years.

Foundation of the Noell forge in Wurzburg (D).


Foundation of the steam boiler factory “L. & C. Steinmüller” by Lebrecht and Carl Steinmüller in Gummersbach (D).

Construction of the first Steinmüller boiler, which is now displayed in the Deutsches Museum in Munich (D).


Foundation of Deutsche Babcock & Wilcox Dampfkessel AG in Oberhausen (D).


Commissioning of the first Waste to Energy plant in Göppingen (D).

Commissioning of the first special Waste to Energy plant with rotary furnace in Bürrig (D).