Technology different cooling systems to choose from. As airconditioning

Technology has come a long way since Willis Carrier unvieled the first modern electrical air conditioning unit in Buffalo, New York in 1902. Now, not only are there numerous manufacturers, there are also different cooling systems to choose from. As airconditioning is a big investment we would like to explain the main differences in order to help you choose the most suitable system for your needs.

First we’ll discuss the two main cooling technologies; Refrigerated ducted air conditioning vs evaporative cooling.

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Evaporative cooling

With Evaporative cooling hot, dry outside air is cooled by passing through water filled filter pads. As the warm air passes through the pads, water evaporates, lowering the air temperature and increasing the humidity. You need to keep a window or door partially open to keep the air circulating through your home.If you live in an area with very dry, hot summers this system is ideal.


Relatively cheap to operate as only the fan and a small water pump consume energy
slightly cheaper installation costs
simple and compact
gives a constant supply of fresh, cooled air throughout your home
some dust and pollen removed by the filter pads


not suitable for humid climates or when its raining
limited temperature control  
The filter system is very basic
not ideal for those with asthma or respiratory issues
High water consumption (up to 25 litres of water an hour)
risk of water leakage if your ceiling outlets are not fitted with covers

Refrigerated air conditioning

warm air inside a room passes over a coolant filled coil that absorbs the heat. The cooled air is then blown back into the room by a fan and the coolant goes to the outside unit where the heat is released into the air. This system of cooling works best in a well-insulated room with the doors and windows closed.


performs well in all weather conditions
very effective at removing humidity from a room
ideal for tropical or sub-tropical climates
dust, pollen, odours and bacteria are removed by the filtration system


higher energy consumption than an evaporative system
filters need to be cleaned or replaced regularly to maintain effectiveness
for maximum cooling doors and windows need to be kept closed
if placed near bedrooms or neighbours windows outdoor units can be a noise issue

 As Florida has a very humid climate we recommend Refrigerated Air Conditioning for our clients, so the big question is, what type of system should you go for; ductless air conditioning vs central air conditioning?

Here the choice is a little harder to make as there are advantages and disadvantages to both systems. To help you decide, we’re going to ask you some questions.

Does your home have ductwork?

If the answwer is yes, a central system will not be too expensive to install. If the answer is no, a ductless system will be cheaper and easier to set up.

Will a visible indoor unit annoy you?

Central AC is invisible indoors. Ductless systems, on the other hand, include an indoor wall-mounted unit. These can be quite elegant and stylish, nevertheless, they are visible.

Does noise bother you?

Generally speaking ductless systems are quieter but noise levels for both central and ductless units vary depending on the model so it’s best to ask your technician about this.