Cincinnati Sub-Zero (CSZ) is a long-standing brand of environmental test chambers for over 80 years. 

We have extensive experience designing unique testing solutions. 

Over the years we have developed products for ease-of-use, reliability and performance tailored to meet our customer’s testing needs and improve the safety and reliability of their products. Our chambers are used by multiple industries including automotive, aerospace, defense, electronics, and medical. 

We have a legacy of providing high quality solutions for temperature, humidity, altitude, thermal shock, combined environments, HALT/HASS and more; in sizes ranging from benchtop to large walk-in/drive-in chamber for full-vehicle testing.