Split, multi-head or ducted?
| Type | Good for | Trade-offs |
|---|---|---|
| Split system | One room or open-plan area | Lowest cost; one unit per space |
| Multi-head split | 2–5 rooms with one outdoor unit | Saves outdoor space; less efficient than separate splits in some setups |
| Ducted | Whole-home comfort with zoning | Highest upfront cost; needs roof or underfloor space |
Getting the size right
An undersized unit runs flat out and struggles on extreme days; an oversized one cycles on and off and costs more upfront. A proper quote should be based on a heat-load assessment that considers room size, ceiling height, insulation, windows, orientation and your climate.
Reading efficiency labels
Look for the Zoned Energy Rating Label, which shows heating and cooling efficiency for hot, average and cold climate zones. Compare the rating for your zone, not just the star count.
Rebates and incentives
Victoria — Victorian Energy Upgrades. Discounts may be available when an accredited provider replaces inefficient heating or cooling with an eligible reverse-cycle system. Victorian Energy Upgrades program
NSW — Energy Savings Scheme and PDRS. Incentives may apply to eligible high-efficiency air conditioners; air conditioner activities were updated from 1 July 2026. NSW Energy Sustainability Schemes — new ESS and PDRS rules from 1 July 2026
Last checked 21 October 2026. Programs change often — always confirm eligibility with the program and your installer.
How to compare air conditioning quotes
- The installer's licence and any required accreditation, with numbers you can check.
- An itemised quote: exact brands and model numbers, quantities and what's included.
- Any rebate or certificate discount shown as a separate line, with who claims it.
- Product warranty, performance warranty (if relevant) and the installer's workmanship warranty — in writing.
- Who handles network/connection approvals and compliance certificates.
- Deposit amount, payment schedule and what happens if the job is delayed.
- Refrigerant handling licence (ARCtick) and electrical licence for the installers.
- Indoor and outdoor unit locations, pipe run lengths and any extra charges for long runs or double storeys.
Frequently asked questions
Is reverse-cycle cheaper to run than gas heating?
In many homes, yes — especially with solar. It depends on your tariffs, the system's efficiency and your climate.
How long does a split system install take?
A simple back-to-back install often takes a few hours. Longer pipe runs, double-storey installs or electrical upgrades take longer.