Classen Appparatebau Wiesloch GmbH –
the genuine Wiesloch-heater people

for over 20 years

The history of Apparatebau Wiesloch began as early as the end of the 1960s. The technical advantages of mineral heat transfer oils over steam - in particular virtually pressureless plant operation at operating temperatures of up to approx. 350 °C - lead to increasingly widespread use of this technology worldwide. Already at this time, a comprehensive product portfolio is developed around the successful KONTAKTOMAT® three-pass heater fired with fuel gases and fuel oils and manufactured in Wiesloch: Electric heaters, process heat exchangers, systems for thermal exhaust air purification, steel chimneys, waste heat recovery systems and cleaning equipment. After only a few years, "plants from Wiesloch" are already operating in over 40 countries. At the beginning of the 1990s, the business operations of Apparatebau Wiesloch GmbH are discontinued.

Then, in 1998, a completely new era begins: Norbert Classen, Claus Albrecht and Hans-Raymund Roos found the company Classen Apparatebau Wiesloch GmbH, after almost 23 years on the market, gladly called "CAW" by customers and business partners all over the world, to resume worldwide direct sales of the popular and proven Wiesloch products.

"Price is what you pay, value is what you get." - Warren Buffet

Industrial combustion and heat transfer

for over 20 years

The understanding of the tasks of our customers on the one hand and the sophisticated special plant construction in combination with sophisticated engineering services, highest reliability, robustness and durability of our plants as well as the unconditional passion of our team for "Best Engineering Made in Wiesloch" ensure that the deserved success in direct competition with established manufacturers on the market is achieved quickly. Today, CAW is the first address for complete and demand-oriented special solutions for process heat supply and industrial firing technology. Long-standing strategic partnerships with well-known and industry-leading companies also enable us to supply a very comprehensive portfolio of services from a single source to numerous industries.

Classen Apparatebau Wiesloch GmbH has been an owner-managed and completely independent company since the day it was founded. With the end of the year 2020, all three shareholders have now retired into their well-deserved retirement, the management is in the hands of Katja Roos and Christian Schnadt.

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Trade fairs

International trade fairs

The basis of any investment in a modern and future-proof process heating system is careful and professional planning. Together with our partners, we use the leading international industry trade fairs as a forum for personal contact and discussions, giving you the opportunity to get to know us and our products. Visit us there, we look forward to seeing you.

You are welcome to arrange your desired date with us in advance. Please write to us at: This email address is being protected from spambots. You need JavaScript enabled to view it.

We are looking forward to your inquiry!

Wir freuen uns auf Ihre Anfrage!

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