The Short Answer
Split systems are better value for 1–3 rooms. Ducted systems make more sense when you want to condition your whole home from one unit and want no visible wall units in any room.
Split Systems: Strengths and Weaknesses
A split system has one indoor wall unit per room and one outdoor condenser. You only cool the rooms you’re using, which saves energy. The trade-off is a wall unit in every room — visible, and each needing its own remote control or app.
Best for:
- Apartments and small homes (1–3 rooms)
- Renters who can’t install a ducted system
- Homes where budget is the primary consideration
- Adding climate control to one or two specific rooms
Ducted Systems: Strengths and Weaknesses
A ducted system runs ductwork through your ceiling cavity and delivers conditioned air through grilles in every room. There’s one controller — often with zone control — and no visible wall units. The system is completely concealed.
Best for:
- Homes 100m² and larger
- New builds and major renovations
- Homeowners who value a clean aesthetic
- Families who use most rooms of the house daily
The Cost Comparison
A quality split system supply and install runs $1,400–$2,800 per room depending on capacity and brand. A whole-home ducted system for a 4-bedroom Sydney home typically costs $6,000–$10,000 supply and installed — depending on zone count, brand, and ceiling access complexity.
Our Honest Take
If you’re conditioning more than 3 rooms and you own the property, ducted almost always makes sense long-term. If you’re conditioning 1–2 rooms, or you’re renting, split systems are the right call. We’ll give you an honest recommendation at your free quote visit.
