Cincinnati Sub-Zero  
Cincinnati Sub-Zero - CSZ, A Gentherm Company

About Cincinnati Sub-Zero

We have proudly supplied world class temperature management solutions to our customers since we first opened our doors in 1940. Our primary focus at this time was manufacturing industrial freezers. The Cincinnati Sub-Zero brand quickly became synonymous with long-lasting, reliable, and high quality products.

From our humble beginnings, CSZ has grown from a supplier of industrial freezers to become a leading manufacturer of standard and custom environmental test chambers. These test chambers now include a wide variety of temperature, vibration, humidity, altitude solutions, and much more. Over time it became clear that the addition of a testing laboratory would not only provide more opportunities for growth but would allow us to provide a more complete portfolio of environmental testing solutions to our customers.

Throughout our more than 70 year journey to become one of the premier worldwide brands of environmental testing solutions we have held true to the philosophy that the customer comes first. This dedication to customer service has allowed us to work with leading manufacturers in over 22 industries including aviation, automotive, aerospace, defense, medical, energy, to name a few.

Located in Sharonville, Ohio, our campus is comprised of two buildings with over 150,000 square feet of manufacturing space. Each building has been tailored to provide flexibility, comfort, and safety for our employees while providing room for continued growth and innovation. Our testing facilities consist of two locations with one being on the main campus in Sharonville, OH and a second laboratory in Sterling Heights, MI.

In February 2019, Cincinnati Sub-Zero was acquired by Weiss Technik North America. Cincinnati Sub-Zero remains a leading product brand of Weiss Technik. 

About Weiss Technik

Weiss Technik North America is a member of the Weiss Technik group of companies, a division of the Schunk Group with its headquarters in Heuchelheim, Germany. Weiss Technik has over 50 years of experience in the manufacture of environmental test chambers and employs 1,700 people in 22 group companies in 15 countries worldwide.

Schunk was founded in 1913 and consists of a group of globally-active technology companies with a broad product and service spectrum in material technology and system engineering encompassing the areas of carbon technology and ceramics, environmental engineering and air conditioning, sinter metal technology, ultrasonics and enamel engineering. The Schunk Group has over 60 companies and locations in 29 countries. The Group employs about 8,500 people around the world. For more information about the Schunk-Group, please visit:

Mission Statement

Schunk is a globally-active technology group. Our expertise in the fields of materials and mechanical engineering provides a major boost for industries around the world. Schunk pursues profitable growth as well as independence and thinks long-term. We are characterized by diversity and mutual respect. As a team, we succeed.

Passion for technology. We are competent and idea driven. This makes us an innovative technology leader and keeps us one step ahead.

We are pragmatic. We provide rapid solutions and deliver efficient results. In doing so, our approach is entrepreneurial and collaborative.

Focus on the customer. We empower our customers on their road to success. Together we make a significant contribution towards a sustainable future.