Customized solutions for your cleanroom
From the initial concept to certified operation
Our DNA: Comprehensive competence and highest standards
CAT Group is one of the world’s leading specialists in rooms designed for sensitive production conditions. Our focus is on cleanrooms, dry rooms, and controlled environments, as well as all related expertise, services, and products. What sets us apart: Based on our customers’ individual requirements, we create tailor-made solutions of the highest technical standard. This is how we create perfect and sustainable solutions—the ideal environment for companies to achieve peak performance every day.
- Over 30 years of experience with cleanroom projects
- Custom cleanroom solutions – all from a single source
- Numerous successful projects in industry, healthcare, and research & development – view our references here!
Are you planning a cleanroom project?
Contact us NOW with no obligation!
Cleanrooms are our passion
Company
CAT Group brings together various specialized business units to form a strong, comprehensive provider of cleanrooms, dryrooms, and controlled environments.
We deliberately focus on this holistic approach – it is the only way we can offer our customers a seamless, comprehensive portfolio and handle all relevant tasks within a project ourselves.
For you, this means: a single point of contact, clear processes, and a smooth project workflow – from planning to qualified operation.
This results in solutions that are not only technically impressive but also improve your processes in the long term.
At the same time, we actively drive innovation in our fields of expertise – because future-proof solutions require continuous development.
Complete portfolio from a single source
Competences
In sensitive production and research environments, every detail matters, and flawless quality is essential. To achieve perfect results, cleanrooms, dryrooms and clean areas must be considered beyond their physical boundaries, taking into account the surrounding structures as well. We offer you a comprehensive range of cleanroom services from a single source—including electrical installations, ventilation systems, and refrigeration and plumbing systems.
Complete portfolio from a single source
Competences
In sensitive production and research environments, every detail matters, and flawless quality is essential. To achieve perfect results, cleanrooms, dryrooms and clean areas must be considered beyond their physical boundaries, taking into account the surrounding structures as well. We offer you a comprehensive range of cleanroom services from a single source—including electrical installations, ventilation systems, and refrigeration and plumbing systems.
Consulting & planning 
Qualification & validation 
Calibration 
Flow visualization 
Cleanroom equipment and stainless steel products 
Site management & construction management 
Commissioning 
Electrical building services 
Heating | Cooling | Ventilation | Sanitary 
Maintenance | Repair | Service High-quality by CAT
Our quality management system, certified to DIN EN ISO 9001, has been audited by TÜV – and guarantees reliable quality in every project.
FROM INDIVIDUAL PRODUCTS TO COMPLETE SOLUTIONS
Cleanroom equipment
&
stainless steel products
Cleanrooms impose the most stringent requirements on all tools, equipment, and devices used. We offer a comprehensive product range – from individual tools to complete cleanroom setups. Upon request, we also design and implement customized solutions in this area that are perfectly tailored to your cleanroom environment.
Get started now – with the Reinraumhelden team!
Career
Join our team and bring your strengths to exciting cleanroom projects! You can expect challenging tasks, strong team spirit, and real opportunities for growth—both professionally and personally. Help make our REINRAUMHELDEN team even stronger. We don’t perform miracles, but we do have a few superpowers!
Articles about particles – and much more
CAT Blog
In our CAT Blog, we keep you up to date on the latest developments and provide insights into innovation, research, and standards. We also share information about our association’s work and our commitment to society and the environment.