One of the most common questions we get from Brisbane homeowners is whether to go with a split system or a ducted air conditioning system. Both will keep your home comfortable, but they suit very different situations. Here is a straightforward breakdown to help you decide.
What Is a Split System?
A split system consists of two units: an indoor head unit mounted on the wall, and an outdoor compressor unit. They are connected by refrigerant piping run through the wall. Each unit cools or heats one room or zone.
Multi-split systems allow you to run several indoor units from a single outdoor compressor, which can cover multiple rooms while keeping the installation relatively simple.
What Is a Ducted System?
A ducted system has a central unit (usually in the roof space) connected to vents throughout the home via a network of ducts. Air is distributed from a single central point to every room. Zoning controls let you decide which rooms are cooled or heated at any given time.
Cost: Split System vs Ducted
Split systems are considerably cheaper upfront. A quality split system for a single room starts from around $1,200 to $2,500 installed, depending on the brand and capacity. A multi-split covering three or four rooms might sit in the $5,000 to $8,000 range.
Ducted systems are a larger investment. For a Brisbane home of around 200 to 300 square metres, a fully installed ducted system typically starts from $10,000 to $18,000 or more depending on the number of zones and the brand chosen.
The running costs depend on usage patterns. Ducted systems can be efficient if you are cooling the whole home, but if you only ever use a few rooms, a split system will generally use less energy because you are only running what you need.
When a Split System Makes More Sense
A split system is usually the better choice if you are renting and need to take it with you, if you are cooling one or two specific rooms, if you are on a budget and need a result quickly, or if your home does not have roof space suitable for ducted installation (common in older Brisbane homes with low-pitched roofs).
Split systems are also easier to retrofit into an existing home because there is minimal structural work involved.
When Ducted Makes More Sense
Ducted is worth considering if you want whole-home climate control with a clean, consistent look throughout the house (no wall units in every room), if you are building a new home or doing a major renovation where installation costs can be minimised by doing it during construction, or if resale value matters and you want a premium finish.
Ducted systems are also a better option for large open-plan homes where a split system would struggle to cover the area effectively.
Brisbane Climate Considerations
Brisbane’s climate means most homes need both cooling and heating capability. Both split systems and ducted systems can run as reverse cycle, providing both cooling in summer and heating in winter. If you are currently only using fans in winter and struggling with the cold mornings, a reverse-cycle system of either type will make a significant difference.
Brisbane summers are also humid, not just hot. Look for systems with good dehumidification performance, particularly if your home feels uncomfortable in January and February even when the temperature is not extreme.
Which System Is Right for Your Home?
The honest answer is that it depends on your home, your budget, and how you live. The best way to get a clear recommendation is to have someone come and look at your property.
Crusader Electrical and Air installs and services both split systems and ducted air conditioning across Brisbane, Ipswich, Springfield, Logan and surrounding areas. We will give you a straight answer on what suits your home, with an upfront quote before any work begins.
Call us on 07 3060 9105 or get in touch online to arrange a free assessment.






