STULZ worldwide

About us

STULZ - Reliable precision cooling and humidity control solutions for mission critical applications

STULZ has been building solutions for our customers for 75 years, and has specialized in climate control for mission critical applications for almost 60 years. This extensive history of innovation along with our impeccable design and manufacturing capabilities makes us the ideal partner to help you achieve your climate control needs.  

Our products are manufactured to the highest quality standards and in conformity with particularly stringent test criteria. Thanks to our global network, we are able to support our customers wherever they are. This holistic approach that shapes and motivates us can be summed up today quite simply as: ONE STULZ. ONE SOURCE.

History of Expertise
Globally Close to You
Made in the USA
Customized for You

STULZ is a privately owned, global manufacturer of highly efficient temperature and humidity management products and solutions.  STULZ engineers a full line of precision air conditioners, air handlers, ultrasonic humidifiers, desiccant dehumidifiers and custom solutions, specifically for industrial, commercial and mission critical applications. 

Thanks to our pioneering role in air conditioning technology, we are an integral part of the market today and will continue to be in the future.

Discover our history.

Since 1974, we have continued to expand around the world and are now represented in over 150 countries.

In addition to our global presence, STULZ believes that every region of the world has specific mission critical cooling needs and that only by manufacturing in the relevant market can you know precisely what your customers want. This is why STULZ has production sites in the world’s major growth regions. Cooperating globally, producing locally: For every region, STULZ supplies tailor-made products for individual customer requirements. 

STULZ USA is a member of the global STULZ family, with seven production plants, and hundreds of sales and service partners around the world. Whenver you are, STULZ is globally close to you. 

Find your local sales rep in the USA & Canada.

STULZ Air Technology Systems, Inc. (STULZ USA) is proud to research, design, manufacture, test, deliver and support products and solutions for mission critical applications, from STULZ' headquarters in Frederick, Maryland, as well as our second manufacturing facility in Dayton, Tennessee. 

At STULZ USA, we do our own engineering, metal stamping, electrical wiring, powder coating, controls programming, piping, and testing.  To us, this is what ‘Made in America’ means.”

Connect with your local STULZ expert in the USA & Canada.

As a company with subsidiaries and partners around the globe, we offer you all the cooling technology you need in the extremely dynamic world of information technology – from hardware to software, from planning through to manufacturing and installation. STULZ delivers complete cooling systems with maximum energy efficiency that meet your requirements precisely, intelligently and reliably. And you can choose from standardized solutions or fully customized designs.

At STULZ, we keep your business running so that you can look to the future with confidence.

Find out more about our sales and services.


The digital transformation of society and the economy is resulting in many changes and driving the emergence of new technologies.
STULZ solutions are a key factor here - they enable the efficient use of resources as well as improved performance of IT equipment, for a sustainable and reliable future.

We keep it running, for 75 years and many more to come!

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Do you have questions about our solutions or our company? Contact us to learn more. 


We look forward to hearing from you!

Contact us today