Are you looking for an efficient and quiet way to cool your space? Split system air conditioners might be the perfect solution for you. These cooling systems are becoming increasingly popular due to their energy efficiency, quiet operation, and flexibility in cooling specific areas. In this ultimate guide, we will dive into everything you need to know about split system air conditioners, including their benefits, disadvantages, installation costs, and more.
What are Split System Air Conditioners?
A split system air conditioner consists of two main parts: an indoor unit and an outdoor unit. The indoor unit cools the air inside the space, while the outdoor unit expels the heat to the outside. These systems are connected by pipes containing refrigerant, which facilitates the heat transfer. Split systems come in various sizes, including 2.5kw split systems, 7kw split systems, and larger models designed for different room sizes.
Key Features of Split Systems:
- Energy Efficiency: Split systems are generally more energy-efficient compared to traditional window or portable air conditioners.
- Quiet Operation: The outdoor unit of a split system makes significantly less noise, making it perfect for bedrooms or other quiet areas.
- Zoning Capability: Many split systems allow you to cool specific rooms or areas, which can save energy and reduce your electricity bill.
What Are the Disadvantages of Split AC?
While split system air conditioners offer many benefits, there are also some drawbacks you should be aware of:
- Installation Complexity: Unlike portable or window units, split systems require professional installation, which can be costly.
- Upfront Cost: The initial cost of purchasing and installing a split system air conditioner can be higher than other options.
- Maintenance Needs: To maintain efficiency, you need to regularly clean filters and check both units, which can add to long-term costs.

What is the $5000 Rule for AC?
The $5000 rule is a guideline used by many homeowners when deciding on the installation of air conditioning. It suggests that the total cost of the AC system, including purchase, installation, and future maintenance, should not exceed 5% of your home’s value.
For example, if your home is worth $200,000, following the $5000 rule would mean that you should not spend more than $10,000 on an air conditioner system. This rule ensures you are getting good value for your investment without overspending.
What are Split System Air Con Units?
Split system air con units are an efficient and effective way to cool specific areas of your home or office. They are called “split” because the system is divided into two units: one indoors and one outdoors. These systems are ideal for cooling individual rooms or smaller spaces and are a great option for homeowners who need a quieter, more energy-efficient cooling solution.
How Much Does it Cost to Install a Split System Air Conditioner in Australia?
The cost of installing a split system air conditioner can vary depending on several factors such as the size of the unit, the complexity of the installation, and the area where you live. On average, the cost for installation in Australia ranges from $1,000 to $4,000.
Here’s a breakdown of the average installation costs for different systems:
| Type of System | Average Cost (AUD) | Key Features |
|---|---|---|
| 2.5kw Split System | $1,000 – $2,000 | Ideal for small to medium rooms |
| 7kw Split System | $2,500 – $4,000 | Suitable for larger rooms |
| Multi-head Split System | $2,500 – $6,000 | Can cool multiple rooms |
| Reverse Cycle Split System | $1,500 – $3,500 | Can heat and cool the space |
Factors Affecting Installation Costs:
- Unit Size: Larger systems or those with higher cooling capacities cost more.
- Installation Complexity: Systems that require extensive ductwork or mounting on difficult surfaces might incur additional charges.
- Location: Labor costs can vary by region, affecting the final price.
Table of Split System Air Conditioners and Costs
Here’s a table summarizing different types of split system air conditioners and their price ranges:
| Unit Type | Cooling Capacity | Price Range (AUD) | Best For |
|---|---|---|---|
| Fujitsu Split System | 2.5kw | $1,000 – $2,000 | Small rooms |
| Daikin Split System | 7kw | $2,000 – $3,500 | Medium to large rooms |
| Mitsubishi Split System | 5kw | $1,500 – $2,500 | Medium-sized spaces |
| Mitsubishi Heavy Industries | 2.5kw to 7kw | $2,000 – $4,000 | Residential and commercia |
Conclusion
Split system air conditioners offer an efficient and quiet way to cool your home or office. They come in a range of sizes, such as 2.5kw and 7kw split systems, catering to various needs. While the installation can be costly, the long-term benefits of energy efficiency and quiet operation make them a worthwhile investment for many. By considering the $5000 rule, installation costs, and different models like Daikin, Fujitsu, and Mitsubishi, you can select the best system that fits your budget and space requirements.
Remember to also consider the long-term maintenance and the complexity of the installation process to get the most out of your split system air conditioner. Whether you’re installing a split system aircon for a small room or a multi-head split system for multiple areas, this system is sure to keep your spaces cool and comfortable for years to come.










