Happy Young Woman Holding Remote Control Relaxing Under The Air Conditioner

Ducted vs Split System Air Conditioning

In the scorching Australian summers or chilly winter nights, finding respite from extreme temperatures is essential for maintaining comfort. Air conditioning systems can offer much needed relief with just the touch of a button. However, with so many different options available, understanding which specific system best fits your needs can be difficult.

As experienced providers of professional air conditioning installation services, we’re here to shed light on the most popular types of air conditioning systems: ducted, split system, reverse cycle, and evaporative cooling.

Whether you’re a homeowner looking to upgrade your cooling solution or a business owner seeking efficient climate control for your commercial space, this blog is your ultimate resource.

Duct air conditioner for home or office. Ceiling mounted cassette type air conditioner and modern lamp light on white ceiling.

What is Ducted Air Conditioning

Ducted air conditioning systems represent the pinnacle of climate control, offering comprehensive cooling and heating solutions for entire homes or office spaces. At the heart of these systems lies a centralised unit, typically installed either in the ceiling or under the floor. From this central location, a network of air ducts extends throughout the building, delivering treated air to each room via strategically placed vents.

The operation of ducted air conditioning is elegantly simple yet highly effective. The centralised unit draws in ambient air, treating it to achieve the desired temperature and humidity levels. Once conditioned, the air is then distributed through the ductwork to individual rooms, ensuring consistent comfort throughout the space.

Key System Components

  • Centralised indoor unit: this houses the primary cooling and heating mechanisms, including the compressor, evaporator coil, and fan. It’s usually installed out of sight in the ceiling or under the floor to maintain aesthetics.
  • Air ducts: pathways which are responsible for transporting treated air from the indoor unit to various rooms within the building. Ducts are often made of insulated materials to minimise heat transfer.
  • Vents: strategically positioned throughout the building, vents serve as the entry points for conditioned air into individual rooms.


  1. Benefits extend to larger spaces – one of the primary advantages of ducted air conditioning is its ability to provide consistent comfort across large areas. Unlike standalone units, which may struggle to maintain uniform temperatures in expansive spaces, ducted systems ensure even distribution of conditioned air throughout the building. This makes them particularly well-suited for homes with multiple bedrooms or open-plan office layouts.
  • There are installation and maintenance challenges – while ducted air conditioning offers unparalleled convenience and comfort, its installation can be a complex and labour-intensive process. Retrofitting ductwork into existing buildings may pose logistical challenges, requiring careful planning and skilled craftsmanship to ensure optimal performance. Additionally, ongoing maintenance of ducted systems, including duct cleaning and filter replacement, is essential to preserve air quality and system efficiency.
  • Energy efficiency considerations – despite their initial investment and maintenance requirements, ducted air conditioning systems are often more energy-efficient than their standalone counterparts. By centralising temperature control and minimising heat loss through insulated ductwork, these systems can reduce overall energy consumption and lower utility bills over time.

Ducted air conditioning systems are versatile solutions suitable for both residential and commercial applications. While commonly used in larger homes, ducted systems are more frequently used in commercial settings, given they provide efficient climate control for large spaces, such as retail spaces, and hospitality venues, enhancing both comfort and productivity for employees and customers alike.

Also, when considering the installation of a ducted air conditioning system, architectural factors must be considered to ensure compatibility with the building’s design and layout. Adequate space for ductwork, including ceiling or floor cavities, must be available to accommodate the system without compromising structural integrity or aesthetics. Additionally, considerations such as ceiling height, room layout, and building materials may influence the design and configuration of the ducted system.

What is Split System Air Conditioning?

Unlike ducted systems, split systems consist of two main components: an indoor unit and an outdoor compressor unit. These units are connected by refrigerant lines and electrical wiring, allowing for efficient heat exchange between the indoor and outdoor environments.

The mechanism of split systems is straightforward yet effective. The outdoor compressor unit serves as the powerhouse of the system, generating refrigerant gas at high pressure to facilitate heat transfer. This refrigerant is then pumped through the lines to the indoor unit, where it undergoes a phase change, absorbing heat from the indoor air in the process. The cooled air is then distributed back into the room, while the heat absorbed by the refrigerant is expelled outdoors.

Key System Components

  • Indoor unit: typically mounted on a wall or suspended from the ceiling, the indoor unit contains the evaporator coil, fan, and air filters. This component is responsible for extracting heat from the indoor air and circulating cooled air back into the room.
  • Outdoor compressor unit: positioned outside the building, the outdoor unit houses the compressor, condenser coil, and fan. It plays a crucial role in dissipating heat absorbed from the indoor environment and maintaining optimal operating conditions for the refrigerant.


  1. Room-by-room control – one of the key advantages of split system air conditioning is its ability to provide individualised temperature control for each room or zone within a building. With separate indoor units installed in multiple rooms, occupants can adjust the temperature settings according to their preferences, maximising comfort, and energy efficiency.
  • Ease of installation – compared to ducted systems, split systems are generally easier and less disruptive to install, especially in existing structures. The absence of ductwork eliminates the need for extensive modifications to the building’s layout, reducing installation time and costs.
  • Limitations in cooling capacity – while split systems excel in providing localised climate control, they may have limitations in cooling larger areas or multiple rooms simultaneously. The capacity of a split system is determined by factors such as the size and efficiency of the indoor unit, as well as the power output of the outdoor compressor unit. As a result, larger buildings or open-plan spaces may require multiple split systems to achieve desired comfort levels, potentially increasing installation and operating costs.

Split system air conditioning is ideal for cooling and heating individual rooms or smaller areas where precise temperature control is desired. Bedrooms, home offices, and living rooms are common applications for split systems, allowing occupants to create comfortable environments tailored to their needs.

Also, for buildings without existing ductwork or central air conditioning systems, split systems offer a convenient and cost-effective retrofitting solution. The compact size and flexible installation options make split systems well-suited for adding climate control capabilities to older homes, apartments, and commercial spaces without major renovations or disruptions.

Reverse Cycle Air conditioner on white wall room

What is Reverse-Cycle Air Conditioning?

Unlike conventional cooling-only systems, reverse-cycle air conditioners are designed to provide both heating and cooling capabilities.

At the heart of reverse-cycle systems lies a sophisticated heat pump mechanism that enables them to extract heat energy from the outdoor air and transfer it indoors during colder months, effectively warming the interior space. Conversely, during warmer periods, the process is reversed, with heat extracted from the indoor air and expelled outside to achieve cooling.

Key System Components

  • Outdoor unit: the outdoor compressor unit of a reverse-cycle system houses the compressor, condenser coil, and fan. It plays a pivotal role in facilitating the exchange of heat between the indoor and outdoor environments, ensuring efficient operation year-round.
  • Indoor unit: like split systems, reverse-cycle air conditioners feature indoor units containing the evaporator coil, fan, and air filters. These components work in tandem to distribute cooled or heated air throughout the interior space.


  • Versatility in temperature control – one of the primary advantages of reverse-cycle air conditioning is its ability to provide heating and cooling functionalities in a single system – providing convenience and flexibility year-round.
  • Efficiency – reverse-cycle systems are renowned for their energy efficiency, particularly when compared to traditional heating methods such as electric resistance heating or gas furnaces. By leveraging heat pump technology, these systems can deliver more heat energy than the electrical energy they consume, resulting in significant cost savings on utility bills over time.

Reverse-cycle air conditioning is ideally suited for residential applications, providing homeowners with year-round comfort and climate control. From cosy winter warmth to refreshing summer coolness, reverse-cycle systems offer unparalleled convenience, ensuring a comfortable living environment regardless of external weather conditions. In addition to residential use, reverse-cycle systems find applications in various climate-specific settings, ranging from commercial buildings and offices to educational institutions and healthcare facilities, by offering efficient heating and cooling capabilities in a single package.

Heating & Cooling Evaporative Cooling Installation

What Are Evaporative Cooling Systems?

Evaporative cooling systems offer an environmentally friendly and cost-effective alternative to traditional air conditioning methods. Operating on the principle of natural evaporation, these systems harness the cooling power of water to create comfortable indoor environments, making them particularly well-suited for arid and dry climates.

At the core of evaporative cooling lies a simple yet effective process: as warm outdoor air is drawn into the system; it passes through moistened filter pads or media. The water evaporates into the air, absorbing heat in the process and lowering the temperature. The cooled air is then circulated throughout the indoor space.

Key System Components

  • Head unit: typically installed on the roof, houses the fan and water distribution system. It plays a crucial role in drawing in outside air and ensuring proper moisture saturation of the filter pads.
  • Filter pads/media: these components act as the primary interface between the incoming air and water, facilitating the evaporation process. High-quality filter pads promote efficient cooling and moisture absorption, enhancing the system’s performance.

Note that its important to receive an efficient evaporative cooling installation, to ensure these key system components operate to their full potential.


  1. Environmental friendliness – one of the most significant advantages of evaporative cooling systems is their minimal environmental impact. Unlike refrigerated air conditioners, which rely on chemical refrigerants with high global warming potential, evaporative coolers use water as the primary cooling agent, making them inherently eco-friendly and sustainable.
  • Cost-effectiveness – with lower energy consumption and reduced reliance on electricity, homeowners can enjoy efficient and affordable cooling solutions, particularly in regions with abundant water resources.

  • Limitations in humid climates – while evaporative cooling systems excel in dry and arid climates, they may be less effective in humid environments where the air already contains high levels of moisture. In such conditions, the evaporation process is hindered, leading to reduced cooling efficiency and potentially higher indoor humidity levels.

Evaporative cooling systems are well-suited for both residential and outdoor applications, providing relief from the heat in homes, patios, and outdoor recreational areas. However, regions with low humidity levels and high temperatures, such as desert climates, are ideal for evaporative cooling systems. By harnessing the natural cooling power of water, these systems offer an energy-efficient and sustainable alternative to traditional air conditioning methods.


With an array of different air conditioning options available, understanding each system’s application and nuance is essential in choosing the right one.

Throughout this guide, we’ve explored ducted, split system, reverse cycle, and evaporative cooling systems. From the comprehensive climate control of ducted systems to the personalised comfort of split systems, each offers its own set of advantages and considerations.

When making your decision, it’s important to prioritise what matters most to you. Whether it’s energy efficiency, environmental impact, or simply staying comfortable, there’s a system out there that aligns with your needs.

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