Inspiringly different.

It all began with the idea of combining steam and convection cooking into a single appliance. So we developed our first combi-steamer in 1976, and we have been continuously working to improve it ever since. Yet our company has never just been content with being a mechanical engineer. We see ourselves as an innovative solutions provider. Above all else, our utmost priority is to satisfy our customers.

This vision has transformed RATIONAL into a global market and technology leader. RATIONAL products are an integral part of industrial kitchens.

With over 750,000 RATIONAL appliances on the market, our appliances have become a standard in professional kitchens all over the world. And what we're particularly happy about: 93% of our global customers confirm that RATIONAL offers maximum customer benefit. (TNS Infratest 2016 study). Definitely one reason why almost all of them would also recommend RATIONAL.

Figures, Facts & Data:
  • over 600 patents, patent applications and utility models
  • 45.000 VarioCookingCenter® produced (since 2005)
  • over 1.000,000 combi steamer produced to date
  • over 45 years of cooking research
  • more than 50% global market share for multifunctional appliances
  • 140 million meals a day
  • Over 2,200 employees worldwide (as of 31.12.2019)
  • Of these approx. 550 chefs are employed by RATIONAL worldwide
  • 59 appliance languages
  • 31 subsidiaries

100 % Made in Europe.

RATIONAL units are produced at two locations: In Landsberg am Lech, Germany, the home of the SelfCookingCenter® and all combi-steamers and Wittenheim in France, where the VarioCookingCenter® is developed and produced.

To ensure that our customers receive a high-quality and perfectly functioning unit, four different employees check each RATIONAL unit before it is sent to the customer. All of the company's technical departments coordinate their activities regularly to maintain and improve the quality of our products.

Company film

Company film

The chefs’ company.

The corporate philosophy is reflected in our approach to research and development. Physicists, food scientists, development engineers and experienced chefs all work together in our R & D team. This makes RATIONAL not only the company for professional chefs. With over 1,000 professional chefs in its workforce, it is also the chef's company. Our application-centric organisation forms the powerful basis for RATIONAL unique innovative drive!

"Our aim is that we develop our products and services together with our customers. Our customer-centric organisation forms the powerful basis for RATIONAL's unique innovative drive."

Peter Wiedemann

Peter Wiedemann

Chief Technical Officer



We would be delighted to answer any questions about our products and RATIONAL.

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If you have any application questions, you can call upon the experience of our RATIONAL master chefs 365 days a year.

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