Using evaporative cooling

Although evaporative cooling can provide healthy and clean air around the home, sometimes it's not the best solution.

1. How do evaporative cooling systems work?

Evaporative airconditioning works on the principle of water saturation. Air is taken from outside, filtered and moisture is added to it. This 'moisturised' air is then blown into the house.

2. External evaporative ventilation

Because evaporative systems use fresh air, the space to be cooled must have ventilation to the outdoor area. This means it's essential for doors and windows to be open while the system is in use.

3. Noise issues from evaporative systems

Evaporative cooling systems tend to be quite noisy, though some brands are noisier than others. If noise is a problem for you, make sure you research the available brands carefully in order to find the quietest possible system.

4. Are these cooling systems appropriate for all homes?

As evaporative cooling systems are ducted, a house must have a roof cavity large enough to accommodate the ducting. The systems can only go overhead; under-floor evaporative cooling is not possible.

5. Evaporative design styles

The cooling unit is placed on the roof and is not particularly attractive, but taking care with its location can make it less obvious. Units are available in a range of colours, so look out for one that blends in with the tones of your roof.

6. Benefits of evaporative cooling

Evaporative cooling systems pump cool, fresh, temperature-controlled air through the house. They are considered to be environmentally friendly and are good for those who suffer from allergies.