Split Air Conditioning

Air Conditioning Supply, Installation & Repairs Specialist

Servicing Penrith, Blue Mountains & nearby areas.

Split Air Conditioning

Wall split air conditioning, often referred to as ductless split systems or simply split systems, is a popular method of cooling and heating indoor spaces in residential, commercial, and industrial settings.

How It Works:

Wall split air conditioning systems consist of two main components: an indoor unit and an outdoor unit. The indoor unit is typically mounted on a wall inside the room or space to be cooled, while the outdoor unit is placed outside the building. These units are connected by refrigerant lines and electrical wiring.

The indoor unit contains the evaporator coil, which cools the air, and a fan that blows the cooled air into the room. The outdoor unit’s primary function is to release heat absorbed from indoor air to the outdoor environment. This is achieved through several key components:

Compressor: The outdoor unit contains a compressor, which pressurizes the refrigerant gas, increasing its temperature and pressure. This process is essential for transferring heat effectively.

Condenser Coil: The compressed and heated refrigerant then flows through a series of coils in the outdoor unit called the condenser coil. These coils are typically exposed to the outdoor air.

Heat Exchange: As the outdoor air blows over the condenser coil, it absorbs the heat from the refrigerant. This transfer of heat from the refrigerant to the outdoor air is what cools down the refrigerant.

Expansion Valve: After releasing heat, the refrigerant travels back to do the indoor unit through a copper line. Along this line, there’s an expansion valve that reduces the pressure of the refrigerant.

Refrigerant Cycle: This completes the refrigerant cycle. The refrigerant continues to cycle between the indoor and outdoor units, absorbing heat indoors and releasing it outdoors, thereby cooling the indoor space.

Fan: The outdoor unit also contains a fan that helps to draw outdoor air over the condenser coils, facilitating the heat exchange process. This fan helps to dissipate heat efficiently.


Energy Efficiency: Wall split systems are highly efficient, as they only cool the room you’re using, rather than cooling the entire house. This targeted cooling can lead to significant energy savings compared to ducted systems that need to cool multiple rooms at once.

Easy Installation: Since wall split systems don’t require ductwork, installation is typically quicker, easier, and less invasive. This makes them a great option for retrofitting older buildings or adding cooling to spaces where ductwork is impractical.

Flexible Design: The indoor units of wall split systems come in various sizes and styles, including sleek wall-mounted units, compact ceiling cassette units, and discreet ducted units. This flexibility allows for customized solutions to fit the aesthetics and layout of any space.

Quiet Operation: Wall split systems are known for their quiet operation, with most of the noise generated by the compressor and condenser unit located outside the building. This makes them ideal for bedrooms, offices, and other quiet spaces where noise pollution is a concern.

Improved Air Quality: Some wall split systems are equipped with advanced filtration systems that can remove dust, allergens, and other airborne particles, leading to better indoor air quality and a healthier living or working environment.


Maintenance: Like all HVAC systems, wall split air conditioners require regular maintenance to ensure optimal performance and longevity. This includes cleaning or replacing filters, checking refrigerant levels, and inspecting electrical connections.

Professional Installation: While wall split systems are easier to install than ducted HVAC systems, they still require professional installation to ensure proper sizing, placement, and connection of the indoor and outdoor units. Improper installation can lead to inefficiency, poor performance, and premature failure of the system.

Space Limitations: Wall split systems are best suited for cooling individual rooms or small spaces. They may not be suitable for larger homes or spaces with complex layouts where a ducted HVAC system would be more appropriate.

In conclusion, wall split air conditioning systems in Blue Mountains offer a cost-effective, energy-efficient, and versatile cooling solution for residential, commercial, and industrial applications. With their customizable design, quiet operation, and improved air quality, they provide comfort and convenience while minimizing environmental impact. However, careful consideration of factors such as maintenance requirements, and space limitations is essential to ensure the optimal performance and longevity of the system.

Penrith Air Supply have been providing quality, efficient after sales air conditioner service since 1981.

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