Ducted reverse cycle and split systems use the same core technology — an electric heat pump — but they distribute it very differently. One conditions your whole home through hidden ducts; the other conditions individual rooms through wall units. Choosing between them comes down to how much of your home you want to condition, your budget, and how you feel about units on the walls. This guide compares them honestly for Melbourne homes.
The Core Difference
Both systems are reverse-cycle heat pumps that heat and cool. The difference is distribution. A split system has one indoor wall unit serving one room or open area, paired with an outdoor unit. A ducted reverse cycle system has a single larger indoor unit hidden in the roof, feeding ductwork to outlets in every room, with zoning to control where the air goes. So the technology is the same; the question is whether you want to condition one area or the whole home. See our how it works guide.
Whole-Home vs Room-by-Room
This is the heart of the choice. Ducted gives even, whole-home comfort — every room reached through the ducts, controlled by zones, with nothing visible but discreet ceiling vents. Splits give targeted comfort — you condition the rooms that have a unit, and other rooms get nothing. For a home where you want consistent comfort everywhere, ducted is the natural fit. For a home where you really only need one or two rooms conditioned — a small apartment, or a living area plus the main bedroom — splits do the job for far less.
| Factor | Ducted reverse cycle | Split system(s) |
|---|---|---|
| Coverage | Whole home, every room | Per room / open area |
| Appearance | Hidden — only ceiling vents show | Wall units in each room |
| Zoning | Built-in, central control | Each unit controlled separately |
| Upfront cost | Higher (whole-home system) | Low per unit; adds up for many rooms |
| Best for | Whole-home comfort | One or a few rooms |
Cost Compared
For a single room, a split system is dramatically cheaper — a fraction of the cost of a ducted system. But the comparison changes as you add rooms. Conditioning a whole home with splits means buying and installing several units, each with its own outdoor unit or a multi-head setup, plus wall penetrations and cabling in every room. By the time you reach four or more areas, a single ducted reverse cycle system is often cost-competitive — and tidier. So the honest position is: splits for partial coverage, ducted for whole-home. See our ducted cost guide.
Running Cost & Efficiency
Both use the same heat-pump technology with similar efficiencies (COP 3–5), so neither is inherently far cheaper to run. What matters is usage. A well-zoned ducted system conditions only the rooms in use, keeping running cost down. Multiple splits are efficient too — you only switch on the rooms you are in. In practice, running cost comes down to how disciplined you are with zoning (ducted) or with switching units on and off (split). See our running costs guide.
Aesthetics & Zoning
For many homeowners, two things tip the decision toward ducted: looks and control. Ducted hides everything — no wall units, just discreet ceiling vents — which suits renovated and architectural homes. And its zoning is centralised and sophisticated, letting you schedule and control areas from one controller or app. Splits put a unit on the wall of every conditioned room, which some find intrusive, and each is controlled on its own. If a clean look and unified control matter to you, ducted is the stronger choice.
Which Suits Your Home
Choose ducted reverse cycle for whole-home, even comfort with a hidden, premium finish and central zoning — especially in larger homes or renovations. Choose split systems for one or a few rooms, a tight budget, an apartment, or to top up a specific space. Or mix both — ducted through the main home plus a split for a hard-to-serve room. We help Melbourne homeowners choose the right approach at quote. Call 0431 918 137.