What is evaporative cooling and how does it work?


When seeking a cooling system for your home or business that is efficient, cost-effective and eco-friendly, an evaporative cooling system should be top of the list.

With current concerns regarding the impact on the environment from technology plus the ever-increasing cost of living, an evaporative cooling system provides the superior alternative to air conditioning for creating an optimal healthy indoor environment throughout the whole house that is eco-friendly and bank account friendly.

Conventional air conditioning works by taking air already inside of your house, passing it through a fan coil that cools it down and then delivers it back into the home. Because of this process, it is necessary to close all windows and doors so that the manufactured cold air will not escape, and you have to wait for it to get cold.

Evaporative cooling, on the other hand, takes a more innovative approach. As the name suggests, the process cools air by evaporating water. This is done first by drawing in the surrounding fresh, hot or warm, dry air from outside your house via a cooling unit on top of the roof that is connected to a series of outlets, or ducts, placed strategically throughout the building. The warm is then filtered through wet pads or quilts, with the resulting evaporation cooling the air and increasing its moisture content. This technique allows evaporative cooling devices to be used even in open areas.

So essentially, it takes in the warm air from the outside and the produced cool air is then blasted through the entire house via the ductwork into every room you want cooled and then out through open windows and doors, giving a steady supply of fresh, cool air.

Cost-effective and eco-friendly

The benefits of evaporative cooling far outweigh those of traditional air conditioning. For a start, because of its design, it uses significantly less power per hour. This translates to bigger savings on utility costs, which not only means less impact on your bank account but also on the environment. Unlike air conditioning, evaporative coolers use no CFCs and thus do not release any into the atmosphere, which have been claimed to affect the ozone layer. In addition, it is more efficient, simple, and practical especially in areas with a dry, hot climate.








The healthy choice

Because evaporative cooling does not use recycled air like air conditioning does, you get only fresh, healthier cool air. The air is not dry, unlike air conditioning which tends to dry out the air and irritate some people’s eyes. Also stale air in your home is completely replaced with fresh air. This means smells and allergens are not re-circulated; this is why sufferers of allergies or asthma will often choose an evaporative cooling system over air conditioning.

One other reason Australians who love the great outdoors and hate the feeling of being ‘cooped up’ choose evaporative cooling over air conditioning is because doors and windows are left open, even in summer. In the winter months, the fans can be switched on when you want to remove winter stale air from your home as well — a great way to dispel those winter germs out of the house.

For more information on the benefits of evaporative cooling in terms of air quality and costs, watch our next blog What are the benefits of evaporative cooling and what are the running costs? Meanwhile, if you have any questions you’d like to ask us directly, feel free to contact us at: (03) 9264 9555.