The EcoCooling approach to Legionnaires’ Disease - safe air cooling

evaporative cooling brominator

Legionnaires’ disease is a form of pneumonia. It is contracted by breathing in very small droplets of water contaminated by legionella bacteria.

It is estimated that there are over 30 million evaporative coolers world-wide and there has never been a case of Legionnaires’ disease attributed to a wetted medial evaporative cooler making evaporative cooling a very safe method of air cooling.

UK legislation regarding Legionnaires’ disease is contained in an HSC guide called Approved Code of Practice (ACOP) and Guidance Legionnaires’ Disease: The control of legionella bacteria in water systems" (L8).

The key reasons why an EcoCooling evaporative cooler is safe are:

  • Avoidance of stagnant water
    The coolers automatically drain when not in use
  • Low water operating temperature
    The temperature of the water rarely goes above 20°C
  • Avoidance of corrosion and scaling
    There is a water management system which prevents scale
  • Use of a biocide
    There is the option of using bromine as a biocide
  • No production of aerosols
    The air velocity over the pads is too slow to create carry over
  • Maintenance
    The units are maintained by qualified personnel

EcoCooling produce a range of fact sheets and a complete Legionella control manual which exceeds the requirements of this legislation.

Download a legionnaire risk assessment report on EcoCoolers by Dr Tom Makin co-author of the HSE L8 guidance document, and the NHS HTM2040 on the control of Legionella.

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