CSZ, A Gentherm Company  

Temperature & Humidity Environmental Testing

Often referred to as temperature cycling, or thermal testing, temperature and humidity stress testing is a process of cycling between two extreme temperature conditions. The air temperature may be changed at a slow rate or a fast rate of change by controlling the air temperature and temperature transition rate. Temperature and humidity testing allows for accelerated changes inside the chamber but at a gradual rate of transition compared to traditional thermal shock testing.

What separates a thermal cycling test from a thermal shock test is that thermal shock uses a chamber that contains two pre-heated and pre-cooled workspaces with a mechanism that transfers the product between the hot and cold zones. Instead of waiting for the chamber to cycle between two temperatures, the product is subjected to an immediate temperature shock by rapidly moving into a pre-heated or pre-cooled chamber.

Rapidly cycling temperatures can expose material incompatibilities and weaknesses in a number of different materials and product assemblies as the materials expand and contract in response to the temperature fluctuations.

Individual test requirements may call for temperature testing alone, or temperature and humidity testing. Our temperature and humidity testing services are used across an array of industries for product storage, temperature cycling tests, as well as high temperature and humidity testing. Many test applications include thermal cycling tests for automotive, electronics and defense testing where products are exposed to temperature extremes in their end use environment. Temperature and humidity storage is also in pharmaceutical testing and package testing for accelerated aging tests.

Temperature Cycling Combined with Other Environments

Temperature cycling may be combined with humidity and /or vibration to help uncover product defects often seen in transportation and defense industries. In addition temperature may also be combined with altitude for aerospace testing. Both of our A2LA accredited test laboratories in Cincinnati, OH and Detroit, MI include the capability to provide temperature and humidity testing along with vibration, or altitude.

As the desired results of temperature cycling testing can vary based on each specific test, we pride ourselves on being flexible to individual project requirements so as to provide industry leading testing and reporting services.

Temperature & Humidity Testing Capabilities Include:

Temperature Range:-73°C to 190°C
Humidity Range:10% to 95% RH
Temperature Transition Rate:1°C per minute up to 25°C per minute

If you would like to learn more about additional options please visit the vibration and altitude pages. We are also available if you wish to speak with someone directly. Contact us for more details.

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  • Products Tested
  • Test Specifications

Here are a few of the products that are often tested
in temperature and/or humidity conditions:


  • Adhesives
  • Airbag Inflators
  • Batteries
  • DAB & PAB
  • Electronics
  • Frozen Food Containers
  • Medical Products
  • Military Products
  • Roofrails
  • Steering Wheels
  • ...and more


The following are a few of the common specifications that require the use of temperature and humidity testing. Tests may also be adapted to your specific needs, view full list of specifications.

Specification Type of Product
AKLV-03 Airbag Inflators
EN90016 Airbag Inflators
EN98003 Airbag Inflators
EN980058 Airbag Inflators
ASTM D 1151 Products which use Adhesives
CEI/IEC 60068-2-14 Medical Products Commercial and Military
GMW3118GS-5-2-V-1 PAB,DAB, Steering Wheels, Roofrails
ASTM E1171 Sections 6.5, 6.6, 6.7 Photovoltaic Modules & Solar Panels
MIL-STD 810 Military
RTCA/DO 160 Commercial, Military

Please complete the form below to request information or a quote on a specific CSZ product.