Air Treatment Units

When a Standard Chamber or even a Bespoke Chamber is not the answer, particularly when the test object is an unusual shape or size an Air Treatment Unit (ATU) is often the right solution. Applications can change and a flexible approach can often reap dividends. The ATU is a device for delivering conditioned air into a made-to-measure test enclosure, often built around the test object. Connection can be by way of flexible hoses or fixed insulated ducting.


  • Electrical heating up to +130°C
  • Cascade refrigeration to achieve enclosure temperatures down to -55°C
  • Self-contained, air-cooled condenser
  • Humidity control from 20%RH to 90%RH inside enclosure
  • Compact, portable design
  • High-performance hose sets to minimise thermal losses

Environmental Test Equipment Specialists