Ruqayyah Snyder
Split system air conditioners are popular in Australia, where the heat is getting worse, making good air conditioning essential. They are great for cooling small to medium-sized areas and come with many features to suit different needs. They are more efficient, quieter, more powerful, and have lower running costs than other air conditioners. They also save energy, which is great for the environment and your wallet. When choosing a split system, it’s important to get the correctly sized system for your space.
| Characteristics | Values |
|---|---|
| Energy efficiency | Energy-efficient models have lower running costs and are better for the environment |
| Room size | Small and medium rooms (up to 40 sqm) typically require 2.0-4.0 kW; large rooms (>40 sqm) require 5.0 kW and higher |
| Noise levels | Quieter than old window units and some have outdoor quiet mode |
| Installation | Requires installation by a licensed technician but is cheaper to install than ducted systems |
| Functions | Different fan speeds, sleep mode, eco-mode, dehumidification mode, boost mode, self-cleaning mode |
| Features | Inverter technology, air purification, Wi-Fi connectivity, automatic temperature control, allergen filters |
| Brands | Daikin, Mitsubishi Heavy Industries, LG, Mannix, ActronAir, TCL |
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What You'll Learn
Energy efficiency and running costs
Energy efficiency is a key consideration when purchasing an air conditioning unit. The ongoing costs of running an air conditioning unit are important to focus on, as a unit that is cheap to buy may be expensive and inefficient in the long run. Split system air conditioners are typically the most energy-efficient air conditioners available, and they are popular among Australian households for their quiet operation, effective cooling, and minimally invasive installation.
The energy efficiency of air conditioning units is measured by a star system in Australia, with more stars indicating greater efficiency. The system is comparative, with the number of stars based on how the unit performs against other units of a similar size. The more stars a unit has, the lower its running costs should be, provided it has been installed correctly. A 5-star or 6-star model will be more energy efficient than a 1-star or 2-star model, and thus cheaper to run. Since April 2020, new models have been given a Zoned Energy Rating Label (ZERL), which shows three cooling and three heating star ratings based on the climate zone where the unit is installed.
The size of the unit is also critical to its energy efficiency. A unit that is too small for the space will need to run at a higher level of output to be effective, while a unit that is too large will not provide any additional benefit in efficiency. The location of the unit is also important, as it must be the correct distance from the ceiling and side walls, and any obstructions in front of the fan will reduce output and the lifespan of the system.
The Australian government maintains an energy efficiency database, and all residential split-system air conditioners sold must meet minimum energy performance standards (MEPS). Manufacturers such as Fujitsu, Mitsubishi, Daikin, and Rinnai register their models with the government Energy Rating system. Daikin, in particular, has a range of air conditioners with different features, technology, and energy-efficiency ratings. Many of their models promise quiet cooling alongside high energy-efficiency ratings.
Other energy-efficient brands include Haier, Actron Air, Panasonic, and Hisense. Hisense's 2.5kW V Series Reverse Cycle Air Conditioner has an 8.5-star energy rating and features HI-NANO technology that eliminates airborne bacteria and limits the spread of pollutants.
There are also government rebates available in New South Wales to encourage the adoption of energy-efficient appliances, which can help to reduce upfront costs and energy bills.
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Installation and upfront costs
Installing a split-system air conditioner in Australia incurs upfront costs ranging from $600 to $5,400, with the higher end of the scale applying to larger split or ducted systems. The installation cost is separate from the purchase price of the unit, which can vary depending on the brand, model, make, size, and required power.
The installation cost is influenced by several factors, including the size and type of air conditioner, the amount of piping, ducting, and other materials required, the ease of access to the installation area, and the condition of the home's electrical system. For example, a 2.5 to 3.5 kW unit typically costs between $700 and $800 to install, while a 5 to 9 kW unit can cost between $800 and $1,000. The location of the property can also impact the installation cost, with properties in hard-to-reach or challenging locations potentially incurring higher fees.
It is important to hire a licensed technician for the installation, with hourly rates ranging from $60 to $110 + GST. Obtaining multiple quotes from installers is recommended, as various factors can significantly impact the final price.
In addition to the installation cost, there are also ongoing maintenance costs associated with split-system air conditioners. Annual maintenance costs can range from $150 to $300, while major repairs can cost between $200 and $1,500. Regular condenser cleaning is important to maintain energy efficiency and cooling performance, and to extend the lifespan of the system.
Some Australian states and territories have legal regulations regarding the type of air conditioner that can be installed, so it is advisable to check with the relevant state or territory government to ensure compliance.
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Noise levels and acoustic comfort
In Australia, the Building Code of Australia (BCA) sets out the minimum requirements for acoustic performance in buildings, including noise transmission between spaces and rooms. The BCA's purpose is to regulate and control noise transmission between adjoining properties and within a building to ensure privacy and minimise noise disturbances.
To achieve optimal acoustic comfort, several factors come into play. Firstly, the design and layout of the space are crucial. This includes the placement of rooms and the selection of appropriate materials to absorb or reflect sound effectively. For example, using sound-absorbing materials such as acoustic panels or installing double-glazed windows can help reduce noise transmission and create a more comfortable environment.
Additionally, the type and source of noise need to be considered. Different activities and equipment produce varying levels and frequencies of sound, and understanding these can help in developing effective mitigation strategies. For instance, a busy open-plan office will likely have different acoustic challenges compared to a quiet library or a bustling factory floor. Addressing these unique noise characteristics is essential for creating comfortable spaces.
Occupant health and well-being are also closely linked to noise levels. Prolonged exposure to excessive noise can lead to issues such as stress, fatigue, and even hearing loss. It can also negatively impact concentration and productivity, particularly in work or educational settings. Therefore, achieving the right balance between noise control and a comfortable environment is essential for the overall health and comfort of occupants.
In summary, achieving optimal noise levels and acoustic comfort requires careful planning and consideration of various factors. These include understanding and adhering to regulations, thoughtful design and material selection, addressing specific noise sources, and considering the potential impact on occupant health. By addressing these aspects, indoor environments can be designed to be both functionally and acoustically comfortable, enhancing the overall experience of those occupying the space.
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Energy ratings and star ratings
When purchasing a split system air conditioner, for example, it is essential to consider both the cooling and heating energy ratings. The higher the kW rating, the larger the space it is designed to cool or heat. For instance, a 5kW capacity unit is well-suited for medium to large spaces, while a 2.0-4.0 kW unit is more appropriate for small to medium rooms.
Inverter air conditioner units are also worth considering as they provide more steady temperatures, faster cooling, quieter operation, and improved energy efficiency, resulting in higher Energy Star ratings and lower electricity costs.
Additionally, gas heaters and gas water heaters in Australia are required to have a Gas Energy Rating Label as part of the gas product certification. This label uses a 6-star rating system to indicate the energy efficiency of the product, with a higher number of stars denoting greater efficiency.
By considering the energy ratings and star ratings of appliances, consumers can make informed choices to reduce their energy consumption and household bills, contributing to a more sustainable environment.
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Top brands and their features
Daikin is a Japanese multinational air conditioning manufacturing company often considered the best brand for split systems. It is known for its innovative and energy-efficient products, intelligent eye sensors, and reputation for reliability. Daikin air conditioners feature advanced inverter technology, which allows for precise temperature control and energy savings. The brand offers a wide range of high-quality models that provide effective cooling while minimising electricity consumption and running costs.
Mitsubishi Heavy Industries (MHI) is widely regarded as a premium brand known for its high-performance systems and powerful units that effectively keep you cool even during the hottest months. It offers cooling capacities ranging from 1.7kW to 9.5kW, Wi-Fi connectivity, automatic temperature control mode, and an “Allergen Clear” system that fights against allergens. Mitsubishi Heavy Industries also has a range of Multi-Split Systems.
Mitsubishi Electric, formerly a part of Mitsubishi Heavy Industries, is another prominent brand that has gained popularity among Australian consumers. It offers a diverse selection of split system air conditioners known for their durability, efficient cooling capabilities, and innovative technologies. Mitsubishi Electric models often incorporate advanced features such as Wi-Fi connectivity, heating and air purification, high-quality filtration system, precise temperature control, low noise levels, and energy-saving features.
Panasonic is a well-established brand that offers a wide range of split-system air conditioners tailored to meet the needs of Australian households. They are recognised for their reliable performance, energy-saving features, and quiet operation. Panasonic air conditioners often have intelligent sensors, flexible installation options, and user-friendly controls for enhanced convenience.
LG offers a diverse range of air conditioners, including wall-mounting systems, split systems, ducted systems, and multi-split systems, providing options to suit different preferences. Notable features across their range include the “Active Energy Control” option, allowing users to set energy consumption limits, ultra-low operating sound, outdoor quiet mode, noise reduction in outdoor units, and various filter systems. LG air conditioners are competitively priced, ranging from $1,000 to $3,000.
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Frequently asked questions
A split system air conditioner has an indoor unit with air filters, a fan, and an evaporator coil, and an outdoor unit with a compressor and condenser coil.
Split system air conditioners are popular in Australia as they are more efficient, quieter, more powerful, and have lower running costs than other air conditioners. They also come with features like inverter technology, air purification, and Wi-Fi connectivity.
There are many great split system air conditioners available in Australia, including the Mitsubishi Heavy Industries Avanti Series, the Daikin ALIRA, and the ActronAir Serene Series 2.
The size of the split system air conditioner you need depends on the size of the room you want to cool. Small and medium rooms up to 40 square meters typically need a system between 2.0kW and 4.0kW, while large rooms over 40 square meters will need a system rated 5.0 kW or higher.
A multi-split system air conditioner allows you to heat or cool multiple rooms in your home individually, providing custom comfort.
