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CAS Hire Evaporative Cooler Range

These evaporative air con units are ideal for the commercial environment.

Being fully mobile and extremely economical, the evaporative cooler quickly and effectively cools a warm room.


Perfect for:

  • Education
  • Healthcare
  • Shops
  • Offices
  • Fitness centres
  • Retail
  • Hospitals
  • Schools
  • Museums
  • TV production areas
  • Manufacturing
  • Factory production lines
  • Nightclubs
  • Stables and kennels
  • Agricultural
  • Military

How Does an Evaporative Cooler Work?

Used as a fan, the cooler gently circulates fresh air, unlike the refrigerated systems which circulate the same air again and again.

This makes the evaporative cooler a much more healthy way to keep your environment cool and fresh.

evaporative cooler hire

The evaporative cooler works in much the same way as a sea breeze. Hot air is blown across the water, causing some of the water to evaporate and absorb the heat, producing a cool, fresh breeze.

Evaporative Air Conditioners sometimes called air coolers, do not have a compressor or condenser. Instead liquid water is evaporated, releasing the vapour into the cooled area.

Evaporating water absorbs a significant amount of heat, the latent heat of vaporisation, cooling the air humans and other animals use the same mechanism to cool themselves by sweating.

Advantages and Disadvantages of Evaporative Coolers?

One of the disadvantages is that unless ambient humidity is low (dry climate) cooling is limited and the cooled air is very humid and can feel clammy and can sometimes generate a slight odour.

This method of air cooling, if used for long periods, will require the unit to be cleaned thoroughly and regularly by using sterilising tablets or fluid (monthly).

On the positive side, evaporative coolers do not require hoses to vent heat outside the cooled area, making them truly portable. However, to optimise their performance, it is recommended to use them in well-vented areas.

Finally, as they do not use refrigerant gas they are environmentally friendly as well as significantly cheaper to run as they use much less energy than refrigerative air conditioners.

For more information about evaporative coolers, see our FAQS page.

You may be interested in: Evaporative Coolers: The Environmentally Friendly Way to Keep Cool

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