Code of Conduct

Effective date: June 29, 2025

Responsible Conduct for a Shared Future

At Viessmann, compliance is more than a legal requirement - it's how we live up to our responsibility as a family-owned company with a global reach. It shapes how we act: ethically, transparently, and reliably.

Our approach is grounded in our purpose:
We co-create living spheres for generations to come.

This means we protect people, the environment, and our values - today and for the long term.

Our Commitment to Integrity

Integrity is part of who we are. Across our ecosystem of employees, partners, and stakeholders, we follow a shared understanding of what’s right. That includes:

  • Zero tolerance for discrimination, harassment, and corruption
  • Fair, honest, and transparent business practices
  • Protection of human rights and personal data
  • Respect for law, environment, and society across all markets
  • Clear rules on gifts, conflicts of interest, and company assets

We expect all Viessmann family members - and those who act on our behalf - to uphold these principles in their daily decisions.

Code of Conduct - Our Shared Compass

The Viessmann Code of Conduct guides how we live our values in practice. It applies to everyone across the Viessmann Generations Group, setting clear expectations in areas such as:

  • Diversity and inclusion
  • Data protection and digital security
  • Anti-bribery and anti-corruption
  • Environmental and social responsibility
  • Supply chain transparency and fair competition

📄 View the Code of Conduct (PDF) (LINK) -DEUTSCH UND ENGLISH

Speak-Up Culture and Whistleblowing

We foster a culture of openness, where speaking up is encouraged and protected. Everyone - employees, business partners, and third parties - can report concerns in good faith, without fear of retaliation.

🔒 Reports are handled confidentially and securely
📬 Report concerns via Viessmann Integrity Line

The system is available 24/7 and supports anonymous reporting in line with data protection standards.

Contact - Compliance at Viessmann

We are here to support you in all compliance-related matters.

Nadine Aufermann
Chief Compliance Officer
Viessmann Generations Group
nada@viessmann.com

Why Compliance Matters

By integrating compliance into our daily actions, we strengthen our culture, ensure accountability, and build the foundation for long-term success - for our teams, our partners, and the generations to come.