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Eurobodalla Home Guide : 2010
eurobodalla home guide 25 HEATING & COOLING EUROBODALLA REFRIGERATION & AIRCONDITIONING HOME • COMMERCIAL PTY LTD DESIGN SALES INSTALLATION SERVICE INVERTER Split & Ducted Systems REVERSE CYCLE Servicing from Milton to Bermagui for over 21 Years Email: email@example.com • Fax: 4472 6292 4472 5004 Showroom: 35 Kylie Cres Batemans Bay Authorised Specialist The use of air conditioners varies enormously and depends on both climate and weather. 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. There are three kinds of Energy Rating labels for air conditioners. The one for cooling- only models has a blue band of stars and a blue box for the energy consumption figure. As the name implies, these air conditioners only have a cooling mode. The label for reverse-cycle models has two bands of stars. The blue band shows the efficiency when cooling, and the red band shows the efficien- cy when heating. There are also two energy consumption figures - blue for cooling and red for heating. As the name implies, the term reverse cycle means that the operation of the air conditioner can be internally reversed to provide indoor heating or cooling as required - the principle used for both modes is the same. There is also a label for heating only models (with no cooling function) but these are unusual in Australia. The two main types of air conditioners for household use are window-wall systems and split systems. While both can be equally effi- cient, split systems tend to be more efficient for a particular size range as their compo- nents are generally less constrained by size (although this is not always true). Split sys- tems have the advantage of being quieter indoors during operation but they are also more expensive. Some larger houses may choose ducted or packaged units. Be sure to check the stars before you buy. A new innovation in air conditioner technol- ogy is the use of an inverter or variable speed drive in the motor system that drives the com- pressor. While these systems tend to look less efficient at full load (ie their star rating at rated capacity is not always as high as conventional air conditioners), they tend to be very efficient at part load operation, which is a more com- mon mode in a typical household. So if you are likely to use an air conditioner for long periods because you live in a hot climate, it may be worth considering an inverter system. They are, however, more expensive to buy, as a rule. S NGANARCOND ON R The output capacity is a measure of the amount of heat that will be removed (cooling) or added (heating) to the room/s in your house by the air conditioner. The output range you need will depend upon your particular requirements. Air conditioner outputs are measured in kilowatts (kW). As an approxi- mate guide for sizing a room unit allow: 125watts (0.125kW) per square metre of floor area to be cooled in living areas; 80 watts (0.080kW) per square metre of floor area in bedrooms. These estimates depend on the climate and the efficiency of your house design (orienta- tion, glazing and insulation levels). It is advisable to get a full heating or cooling load calculation from an authorised air conditioning installer or manufacturer before you buy. tips for choosing an efficient air conditioner contrary to common belief, only about 45% of households in australia own an air conditioner