Altitude chambers, or hypobaric chambers, are environmental test chambers which replicate the pressure and gas conditions found at differing altitudes for the purposes of evaluating the response to the changes.

Altitude chambers are used to test electronics, products and packaging which may be exposed to high altitude environments during their lifespan. If malfunctions occur, or other flaws are revealed in the testing process, manufacturers can then adapt the product design to avoid future malfunctions.

Industries such as aerospace, aeronautical, military and automotive employ strict altitude chamber testing due to the critical nature of their product activities. For example, the failure of a missile guidance system, aircraft radio or a deep sea diving regulator would likely result in a severe and fatal accident. Therefore, the system components and equipment in these industries must be tested in extremes of varying pressure in order to determine any potential weaknesses. Read More…

Leading Manufacturers

Cincinnati Sub-Zero (CSZ)

Cincinnati, OH | 800-989-7373

Russells Technical Products Inc.

Holland, MI | 616-392-3161

Parameter Generation & Control, Inc.

Black Mountain, NC | 800-438-5494

Weiss Technik North America, Inc.

Grand Rapids, MI | 800-368-4768

Thermal Product Solutions (TPS, LLC)

New Columbia, PA | 570-538-7200

Hastest Solutions, Inc.

San Jose, CA | 408-945-7861


In addition, commercial products that require shipping via air can be tested in altitude chambers to ensure no product damage occurs during transit. Altitude chambers are also used for the testing of the human body in response to changes in pressure and altitude. These walk-in chambers monitor the response of the respiratory and circulatory system in persons for the purposes of pilot and astronaut training, professional athletic training, and in determining the symptoms and treatments for hypoxia, a condition caused by altitude change.

Environmental test chambers are designed with the capacity to replicate extreme environmental conditions in order to comprehensively test the reliability of a product. Altitude chambers simulate extremely high altitudes to evaluate the effects of pressure and air change, and routinely 10-8 Torr levels are achieved in these vacuum chambers. Altitude chamber manufacturers fabricate chambers which have the capacity to replicate pressure conditions of up to 100,000 feet above sea level. Test chambers can be used to test a combination of environmental conditions, and often temperature and humidity tests are included in the altitude chamber.

Altitude Chambers
AGREE Chambers – Cincinnati Sub-Zero Products, Inc.

This is necessary to increase the validity of the results in accordance to the true nature of the environment the product will be functioning in. Chambers such as these that designed for such extreme altitude testing must be equipped with heavy gauge walls to prevent the internal collapse of the structure due to the inside chamber’s vacuum-like atmosphere. Chambers for altitude testing vary greatly in size from bench-top chambers to drive-in chambers due to the broad range of products that require altitude testing.

Altitude Chamber Informational Video