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What is adiabatic humidification?

There are two main methods of introducing moisture into air – steam humidification and adiabatic humidification. To understand adiabatic humidification properly, we’ll first need to look at steam humidification.

Steam humidification

Also known as isothermal humidification, the use of steam is a traditional method of adding moisture to the air. Electricity or gas is used to boil water and create steam, which, although expensive to run, has until recently been considered the most hygienic method of humidification. This is because the temperature of the steam prevents the development of harmful bacteria such as Legionella. However, they can be expensive to buy and maintain as well as being inefficient to operate.

Adiabatic humidification

These systems use mechanical energy to atomise cold water, introducing it into the air as a fine spray. Because there’s no need for gas or electricity to heat the water, adiabatic humidifiers offer far greater energy efficiency than steam systems. Plus, unlike with steam humidification, no heat is added to the water so in the warm summer months this feels much more cool, pleasant and comfortable. As mentioned above, this was once considered less hygienic than using steam due to the absence of the sterilising effect of heat. However, Gibbons has developed a fail-safe system to guarantee complete protection against Legionella. This system works by initiating a shutdown in the event of protective measures failing and will not allow water to flow until the issue is corrected. This, combined with a programme of regular maintenance and regular cleaning will ensure a healthy, efficient system.

Other benefits of an adiabatic humidification system include:

  • Much less energy required to operate than steam system
  • Precision control available
  • Simple to install and retrofit
  • Straightforward operation and maintenance

If you’d like to know more about Gibbons’ adiabatic humidification system, call Steve Rix on 07966423165 or email


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