CSZ, A Gentherm Company  
Environmental Test Chamber Manufacturer

About CSZ Testing

At CSZ Testing, we provide testing services to a diverse group of industries nationwide such as aerospace, automotive, electronics, medical, military, telecommunications, plastics, packaging and a variety of other industries. We specialize in design verification testing, product performance, failure analysis, production testing, life testing, environmental stress screening, and a total quality controlled system. Whether you need to provide validation of your product's test results or need a test laboratory to handle overflow during your peak testing periods, CSZ Testing Services is your one stop solution.

One Organization Meeting your Testing and Equipment Needs

CSZ Testing Laboratory operates as a division of Cincinnati Sub-Zero (CSZ) Products, LLC. CSZ's Industrial Division manufactures a wide range of environmental test chambers from benchtop to full walk-in rooms. If you do your own testing in-house or are considering testing in-house, visit www.cszindustrial.com for enviromental test chamber information.


ESSC Inc. opened its doors in 1988 in Blue Ash, Ohio. As our customers' demand for testing increased, the facility steadily grew to include more testing services. In 1999, ESSC Inc. opened an additional test laboratory in Sterling Heights, Michigan. Both facilities are A2LA Accredited laboratories with ISO/IEC 17025 compliance and proudly operate with the high quality standards. In 2008, ESSC Inc. changed its name to CSZ Testing Services. We continue to add addtional capabilities and equipment to provide the best testing solutions for our customers.