Air Conditioning
Split vs Ducted Air Conditioning: Which Suits Your Home?
Choosing an air conditioner starts with the rooms you want to heat or cool and how you use them—not with a brand or a rule of thumb based only on floor area. A single split, multi-split or ducted system can each suit a different layout. This guide sets out the practical questions to discuss before choosing equipment.
A split system for one room or area
A wall-mounted split system has one indoor unit connected to an outdoor unit. It can suit a bedroom, living room or other defined area where one indoor unit can distribute air effectively. The indoor-unit position, outdoor-unit access and pipe route all need to work for the property.
If you want to condition several rooms, compare the likely use and installation requirements rather than assuming a larger single unit will serve the whole home. The Australian Government's heating and cooling guide explains common system types and energy-efficiency information.
Multi-split for several individually controlled rooms
A multi-split connects multiple indoor units to one outdoor unit. It may suit a home where several rooms need independent controls but there is a reason to limit the number of outdoor units. The compatible combinations, total capacity and rooms that can operate together depend on the selected system.
Ask the installer to show which indoor units are included, how the proposed capacity relates to the rooms, where pipework will run, and what operating combinations the manufacturer allows. Sydney Power Group installs and services multi-split systems.
Ducted for air distribution through several areas
Ducted air conditioning uses a central unit and ducts to deliver air through outlets around the building. It can suit a whole-home layout where there is room for the equipment and ductwork, but ceiling or roof-space access, return-air paths, outlet locations and zoning need to be considered.
Zoning can direct conditioned air to selected parts of the building, subject to the system design. Compare ducted installation with individual split systems and ask how the system will work when some rooms are closed or unused.
Questions to answer before choosing
List the rooms to be conditioned, when they are occupied, and whether doors are usually open or closed. Note ceiling height, large windows, afternoon sun and insulation if known. These details help a licensed installer assess capacity and unit placement.
Compare the model, capacity, zones, controls, electrical work and installation inclusions in writing. Most single-phase non-ducted air conditioners carry a Zoned Energy Rating Label; energy.gov.au explains the label and its climate-zone ratings. For a site assessment, see our air-conditioning installation service.
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