Weiss Technik Ltd.
- UK. Manufactures broad range of climatic simulation equipment. Includes environmental test chambers, drive-in humidity and walk-in temperature chambers, as well as material stress and salt spray testing equipment.
- http://www.weiss-gallenkamp.com/weisstechnik/

Chasewood Environmental Systems
- Design, engineering, and supervised installation of environmental chambers for lithium battery, pharmaceutical, and paper industries, as well as for computer test labs and offshore rigs.
- http://www.chasewoodsys.com/

Sharetree Systems
- UK manufacturer of environmental test chambers and stress screening equipment. Products include thermal and humidity stress chambers, vibration test equipment and thermal shock chambers.
- http://www.sharetree.co.uk

Scientific Climate Systems Inc.
- Manufacturers, designers and suppliers of dry rooms, desiccant dehumidification systems, and low humidity chambers for the lithium battery, medical, pharmaceutical and all other industries.
- http://www.dryrooms.com

U.L.T. Services
- Environmental chamber service and consulting company.
- http://www.ultservices.com/

Pro Temp Mechanical Inc.
- Specializes in sale, rent, and leasing of environmental testing equipment.
- http://www.protemp.net

Unitemp
- UK. Development, supply, and maintenance of standard and special environmental test chambers for simulation of climatic conditions.
- http://www.unitemp.co.uk/

Environmental Stress Systems, Inc.
- Manufactures and sells thermal platform systems used in functional and reliability testing of electronic components for microwave, aerospace, telecommunications, military, automotive industries.
- http://www.essproducts.com

Blecha Refrigeration
- Refurbishes environmental test chambers for science and industry.
- http://www.blecha.com/

Thermotron Industries
- Manufacturer of environmental test chambers and equipment. Range includes stress and vibration test equipment and thermal shock chambers.
- http://www.thermotron.com

TestEquity LLC
- Manufactures, sells, rents and leases environmental chambers for temperature and humidity testing. Based in Thousand Oaks, California.
- http://chamber.testequity.com

C&C Technologies Inc.
- Refurbished chambers for temperature, humidity, and vibration testing. Available for sale or on lease with option to buy.
- http://www.refurbished-chambers.com

Screening Systems, Inc.
- Manufactures vibration and temperature environmental test chambers for use within ESS, HALT, HASS, other accelerated testing programs.
- http://www.scrsys.com

LR Environmental Equipment Company
- Buys and sells used, refurbished environmental test chambers, industrial ovens, R&D test equipment.
- http://www.lre.com

Espec
- Manufactures environmental test chambers to simulate various temperature and humidity environments. Products include benchtop, walk-in sizes, environmental stress screening (ESS), HAST, thermal shock.
- http://www.espec.com

Envirotronics
- Environmental test chambers for scientific testing of humidity, temperature, thermal shock, stress screening, including walk-in, drive-in chambers.
- http://www.envirotronics.com/

BMA
- Manufacturing and testing of environmental test chambers for use in high-tech manufacturing and a variety of other application.
- http://www.testchamber.com

Tescor, Inc.
- Manufactures calorimeters, psychrometric test rooms, test stands and environmental rooms for automotive, HVAC pharmaceutical industries. Products include compressor, condenser, radiator, evaporator, heater core calorimeters, psychrometric test rooms. Also
- http://www.tescor-inc.com