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Air Conditioning
Get free quotes from air conditioning companies in your area. Just select Air-Conditioning below. A list of companies will appear. By filling in the Quotation Request Form, you can contact these companies directly, and request a quote. They will then send you your free quote.
Air Conditioning regulates the temperature and humidity of indoor areas. This allows you to stay comfortable throughout the year. In many areas of Australia, the summer months can get very hot; heat exhaustion can be very damaging to your health. Staying cool and finding shelter from the heat is essential for you to enjoy your day. This is why many Australians opt for air conditioning to keep their homes cool and comfortable.
The best way to choose an air conditioning system, and keep your air
conditioning system functioning correctly, is to understand the basic
elements of how an air conditioner works.
How Air Conditioning Works:
An air conditioner uses the heat exchange properties of condensation and
evaporation.
The Refrigeration Cycle:
- condensing coil
- expansion valve
- evaporator coil
- compressor
Evaporation is the process where a liquid turns to gas through heat absorption.
Condensation is when a gas turns back to a liquid form, when heat is released.
Air conditioners are designed to use a compressor to create pressure changes between two compartments of the air conditioner. This would cause the evaporation and condensation that is needed to pump a refrigerant around.
A refrigerant liquid is pumped into the cool compartment (the evaporator coil – see image 3 in diagram). The low pressure in this compartment causes the refrigerant to evaporate into a vapour, which takes the heat with it. In the second compartment (the condenser), the refrigerant vapour is compressed and pumped through another heat exchange coil (see image 1 on diagram), which condenses it back to a liquid form and releases the heat previously absorbed from the initial compartment. When this process is repeated, it can actively change the temperature of a room. By extracting the heat from one side of the unit to the other side, the initial side is cooled as the energy is extracted from that side.
Many air conditioners use halogenated chlorofluorocarbons (CFC) as a refrigerant. This substance is also known as Freon. CFCs are used as the heat exchange properties are very good during the condensation and evaporation process. As CFCs are associated with ozone loss, Australia has specific laws to help protect the environment and minimize further damage, so there are strict regulations for the emissions of CFCs by air conditioning units.
What Kind of Air Conditioner?
With so many different types of air conditioning available, it is good
to consider the following points:
- How large is your home? / How many rooms do you want to cool? For smaller apartments, a single air conditioning unit may suffice, whereas with a larger home that requires more rooms, a ducted central air conditioning system may be more suitable.
- It is best to look at different models so that you have a good idea of what you are looking for. To read more visit different types of air conditioner
- Is it energy efficient? Check to see the efficiency rating for the unit you are considering. This can save you money in the long run, as an efficient system can cost less to run.
Different types of air conditioner:
Window and Through Wall Units:
Window and through-wall units are a smaller type of air conditioner, and
can only cool one room. One of the more traditional types of air conditioner,
these rectangular units are placed either through an open window or fitted
through a wall. Only the front of the air conditioner is placed inside
the room, with the rest of the unit protruding outside (this allows the
outside air to cool the condener section of the air conditioner). Air
can be blown both in and out of window and through-wall air conditioners,
as they have vents on both the inside and outside compartments of the
unit.
Window and through-wall air conditioners have a vent on the both the inside and outside compartments of the unit. One fan blows the inside air in and out of the unit to cool it, while another fan on the outside blows outside air in and out of the unit to act as a heat sink.
If you have a smaller apartment, this is a good option to consider. However,
if you have a larger home and wish to cool several rooms, it may be cheaper
to install a central air conditioning system.
Central Air Conditioning:
Central air conditioning, otherwise known as Ducted Air Conditioning, uses ducts to circulate cool air to several rooms. If you require more than one room to be cooled, central air conditioning can be a more efficient and cheaper option.
Usually with central air conditioning, the condensor, compressor and evaporator are positioned outside in an outdoor unit (usually on the roof or the ground). Ducts run through to the different rooms.
As the air conditioning unit is outside, this reduces the level of noise
indoors, making it a quieter system than a free-standing air conditioner.
Many central air conditioning units provide controls that allow you to
program temperatures throughout the week.
Points to Consider when buying an air conditioner:
- The most important thing to look for with an air conditioner is the star rating. You need to work out what size you require for the task and then choose the most efficient model that will perform the task.
- Make sure that you only use a licensed technician. A technician that holds a Refrigerant Handling Licence (RHL) is trained to minimise CFC emissions.
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