STULZ is a global provider of innovative data center cooling solutions and services.

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Designed and Manufactured in the U.S.A.

While some products are merely assembled in America, STULZ Air Technology Systems, Inc., the North-American division of STULZ, is proud to always research, design, manufacture, test and support our advanced cooling technologies in our Frederick, MD facility. 

STULZ products meet the requirements of the Buy America Act.

Global Presence

STULZ Air Technology Systems is a member of the global STULZ family, with two major divisions, seven production plants, and hundreds of sales and service partners around the world.  Wherever you are, STULZ is globally close to you.

Visit STULZ worldwide

Cooling Technology Leader

STULZ is the technology leader, providing cooling solutions and services for mission critical applications.  This is accomplished through the design and manufacture of highly energy efficient temperature and humidity control equipment for commercial and industrial applications.

Energy Efficiency is at the core of every STULZ Product - including our HQ/Factory's 950 kW solar array. 


STULZ products are available in a variety of configurations and options based on our factory designed and tested components and modules. We can also provide a custom touch to adapt our products to meet your specific needs.

Breadth and Depth

With more than 20 years of expertise in controls, economizers, and mission critical solutions, STULZ offers the largest portfolio to fill any and all precision cooling needs.  

Download STULZ Solutions and Services Brochure here.

ISO Certified

As part of our commitment to quality, STULZ Air Technology Systems is ISO-9001 Quality Registered.


Mission Statement: STULZ Mission is to be the premier provider of energy efficient temperature and humidity control solutions for mission critical applications. 




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(301) 620-2033

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