Altitude Test Chambers

Altitude chamber testing is important for manufacturers of products that might be shipped via air. It is especially important for defense and aerospace applications where pressure and vacuum conditions are even more intense. Our altitude test chambers simulate a variety of environmental conditions including temperature, altitude, humidity, and vibration for the rigorous testing standards of combined environment. Since our altitude test chamber interior size is determined by the customer, we offer the flexibility of reach-in or walk-in sizing for large capacity altitude testing.


About Altitude Test Chambers

Our altitude test chambers control the temperature and/or humidity environment for testing your product while simulating various altitude conditions from site level to 200,000 feet. Some test standards require combined testing, therefore we offer a wide range of conditions including temperature, altitude, humidity, and vibration. Our altitude test chambers can meet RTCA DO-160 and MIL-STD-810H test specifications for icing and rapid decompression for avionics cabin pressure testing. Our rapid decompression option simulates sudden altitude change from 8,000 ft. to 60,000 ft. in 15 seconds.

Controlled Testing Environment Capabilities

  • Altitude
  • Temperature
  • Temperature and altitude (temperature controllable to 65,000 ft./20,000m)
  • Temperature and humidity at site level
  • Temperature, altitude, and vibration
  • RTCA DO-160 icing and various other combined environmental tests
  • Rapid Decompression


  • Brushed 304 series stainless steel liner, heliarc welded and dye checked
  • Reach-in or walk-in/drive-in sizing available
  • Welded external or internal pressure member construction
  • Fiberglass insulation, 0.25k factor
  • Welded steel frame with removable access panels to service components
  • Full opening chamber door with heavy duty wheel latch
  • Heavy duty horizontal glide door hinges
  • Durable blue enamel finishes (custom colors available)
  • Heavy duty vacuum pump with gas ballast
  • Oil mist eliminator
  • Temperature ranges:
    • -100°F/-73°C to 356°F/180°C
  • Altitude Test Chamber range:
    • Site level to 100,000 ft (30,500 m). Extended ranges available
  • Humidity range:
    • 10% to 95% RH within the bounds of a +185°F/85°C maximum dry bulb and a 40°F/4°C min. dewpoint
  • Can be equipped with battery testing safety features according to EUCAR hazard safety level


  • Vacuum systems for MIL-STD-810H and RTCA DO-160G rapid decompression testing
  • Through-wall access ports with bolted vacuum tight covers
  • Viewing windows
  • Shelves (adjustable)
  • Refrigeration gauges
  • Refrigeration sound deadening package
  • Remote refrigeration systems
  • LN2 boost cooling
  • Air cooled condenser
  • Humidity water demineralizer
  • Dry air purge system
  • Running time meter
  • Electrical disconnect switch
  • Additional safeguards for battery testing


  • Low or zero ozone depletion refrigerants
  • Energy saving refrigeration bypass capacity control
  • Low stage desuperheater
  • Oil pressure switches
  • Compressor suction and discharge pressure switches
  • Air or Water cooled condenser
  • Automatic condenser water control valve
  • ASME certified pressure vessels
  • Compressor overload protection
  • High stage compressor crankcase heater
  • Compressor head fans
  • Low stage oil separator
  • All piping joints silfos or silver soldered
  • Stainless steel compressor condensate pans


  • All wiring meets NEC/NFPA standards
  • 120v control circuit transformer
  • Fully enclosed electrical panel
  • All circuits fuse or circuit breaker protected
  • Full system function switches with system status pilot lights
  • Incandescent interior lighting
  • All wiring numbered or color coded
  • High temperature limit safety
  • Master heating circuit contactor
  • Air circulator/heater/high altitude interlock
  • Balanced load on three phase power
  • 3rd party NRTL/CSA/CE marking available