Split System vs Ducted: Choosing the Right Aircon for Your Home

Walk into any aircon showroom and you will hear the same first question: split system or ducted? Both do the job brilliantly when they are matched to the right house, and both disappoint when they are not. The good news is that the decision usually comes down to a handful of practical factors you can think through before anyone quotes you a cent.

How each system works

A split system pairs one indoor head with one outdoor unit and conditions a single room or open living zone. A multi-split runs several indoor heads off one outdoor unit. Ducted systems take a different approach entirely: a central unit sits in the roof space and pushes conditioned air through insulated ducts to discreet ceiling vents in every room, usually with zoning so you can switch areas on and off.

When a split system wins

If you spend most of your time in one or two rooms — a living area through the day and a main bedroom at night — splits are hard to beat. They cost far less upfront, they are efficient because you only condition the space you are using, and installation is typically done in a single day with minimal disruption. Renters-turned-owners, smaller homes, apartments and anyone adding comfort to an existing house room by room tend to land here.

When ducted makes sense

Ducted comes into its own in larger family homes where several rooms need comfort at once, and in households that value a clean look — no wall units, just subtle vents. Zoning keeps running costs sensible by letting you heat or cool only the areas in use. It suits new builds and renovations especially well, because ducts can be planned in before ceilings close up. The trade-off is a noticeably higher purchase and installation cost, and you need adequate roof space for the unit and ductwork.

The questions that decide it

Ask yourself three things. How many rooms genuinely need conditioning at the same time? If it is one or two, splits are usually the smarter spend. What does your roof cavity look like? Tight or complicated roof spaces can rule ducted out regardless of budget. And how long will you stay? Ducted adds resale appeal to family homes, which can justify the extra outlay if you are settled for the long haul.

Don't forget the hybrid option

Plenty of Victorian homes end up with a sensible mix: a quality split in the main living zone doing the heavy lifting, plus smaller units in bedrooms. It often delivers ninety per cent of the comfort of ducted at a fraction of the price. A proper in-home assessment — measuring rooms, checking insulation and looking at your switchboard — settles the question quickly, and it is exactly what we do before every quote.