Aircraft hangars and maintenance facilities


Aircraft are extremely expensive, mission-critical machines, packed with complex systems and technologies. Failure to service and store them under humidity-controlled conditions is likely to result in significant operational problems, including:

  • Limitations in operational readiness
  • Reduced force effectiveness for military planes
  • Reduced profitability for commercial aircraft
  • Slower turnarounds and higher maintenance costs
  • Condensation, leading to corrosion in sensitive, expensive equipment


Controlled humidity means greater availability for operations

Humidity challenges in aircraft storage and maintenance

Aircraft encounter a vast range of weather, temperature and air conditions in flight, while taxiing and when inside service and maintenance facilities. Their structures feature lots of different materials, surfaces and cavities, and different parts of the plane are at very different temperatures at the same time.

All this adds up to ideal conditions for the formation of condensation, and the corrosion, downtime and maintenance costs that result from this.

Heating, fans and ventilation don’t tackle the real problems stemming from uncontrolled humidity and condensation. Replacing one body of air with uncontrolled humidity with another – with just as little control – doesn’t make the problem go away.

Eliminating the problem

Temperature differences between hot or cold materials and the surrounding air are ideal conditions for corrosion on metal aircraft parts as well as readiness-impacting glitches in both mechanicals and electronics.

In commercial aviation, aircraft only earn revenue when they’re in service. For military operators, mission availability and force effectiveness depend on the required number of aircraft being serviceable at the right time.

In addition, military operations now often involve increasing emphasis on expeditionary, multi-force deployments – which can mean maintenance work has to be carried out in less-than-ideal conditions in unpredictable, extreme environments as well as in temporary structures.

You can notch up a whole series of practical, cost-saving benefits by controlling the point at which the water vapour in the air inside your hangar or maintenance facility condenses (the dew point), so such condensation problems simply cannot arise. Bringing the relative humidity below 65% at 20oC completely does away with any condensation problems you may be encountering in your organisation’s aircraft maintenance setup.

Cotes dehumidification systems aim to reduce downtime and delays from your operating equations, and to reduce the duration and costs of whatever maintenance work needs to be done.

How you benefit

  • Maintain better control of air conditions where you shelter, store and work on aircraft
  • Prevent corrosion and other humidity-related damage to structures, fittings and equipment, resulting in lower overall operating costs and greater aircraft availability
  • Reduce energy consumption while doing so, by using unique Cotes heat recovery modules
  • Reduced service and maintenance costs

How Cotes solutions stand out

Cotes solutions for controlling humidity in aviation maintenance facilities are
  • Compact, robust and reliable
  • Built for toughness – long service life
  • Easy to redeploy and move around if needed
  • Low energy consumption


Related industries

For more about tackling humidity in hangars, contact Peter Lange +45 5167 2904