Buying an air conditioner is a long-term decision — a good system should serve your home for well over a decade. With Melbourne's swing from cold winters to hot, dry summers, choosing the right type and size matters more than most people expect. Here is what to weigh up.
Ducted or split system?
The first decision is usually between ducted and split. Each has clear strengths:
- Split systems suit individual rooms or open-plan living areas. They are cost-effective, efficient and quick to install — see our split system services.
- Refrigerated ducted air conditioning heats and cools the whole home discreetly, with zoning to control different areas — see refrigerated ducted.
- For apartments and larger multi-zone properties, VRV/VRF systems offer precise control across many spaces.
If you are torn between the two, our comparison of ducted vs split system air conditioning breaks it down in more detail.
Getting the sizing right
Capacity, measured in kilowatts, is critical. An undersized unit will struggle on the hottest days and run constantly; an oversized one will short-cycle, waste energy and control humidity poorly. Sizing depends on room dimensions, ceiling height, window area and orientation, insulation and how many people use the space. We look at this closely in what size air conditioner does my home need.
Efficiency and star ratings
Energy-rating labels let you compare models at a glance — more stars means better efficiency for the same output. A more efficient unit usually costs a little more upfront but works in your favour every time it runs. In Melbourne, look for a system rated well for both cooling and heating if you want year-round use.
Consider Melbourne's climate
Our summers are hot but generally dry, and our winters are genuinely cold. That combination makes reverse cycle systems especially appealing, because a single unit handles both seasons efficiently. If you only need heating, our gas heating options are worth a look too.
Professional installation matters
Even the best equipment underperforms if it is poorly installed. Correct sizing, refrigerant charging, duct design and placement all affect comfort, running costs and lifespan. That is where experienced, licensed installers make the difference.
If you would like tailored advice for your home, request a quote and we will recommend the right system for your layout and budget.
