Can I install an air conditioner myself in Australia?

No. In Australia, working with the refrigerant in an air conditioner requires a licence from the Australian Refrigeration Council (ARC), and the electrical connection must be done by a licensed electrician. DIY installation is unsafe, can be unlawful. Use licensed professionals and check their licences.

Why can’t I do it myself?

Installing a split system or ducted system is not like hanging a shelf. It combines three regulated or high-risk tasks:

• Refrigerant handling. Refrigerants are pressurised and can harm people and the environment if released. Australian rules require a licence to handle them.
• Electrical work. Air conditioners connect to the home’s wiring, usually on their own circuit. Electrical work must be done by a licensed electrician, and the Electrical Safety Office Queensland regulates electrical work in the state.
• Mounting and working at height. Outdoor units are heavy and are often mounted on walls, brackets or roofs, which is a fall risk.

Some licensed technicians hold a restricted licence that covers certain installations, and the exact scope varies, so it is worth asking what your installer is licensed to do.

What about plug-in or portable units?

Portable and window units that plug in without a refrigerant connection are a different product. Even then, read the manual and use the unit only as intended. Fixed split and ducted systems are not DIY products.

What are the risks of DIY?

Risks include electric shock, fire, refrigerant leaks, poor performance and early failure. A poorly installed system can also cause problems later. You may also have trouble selling or renting a home with unlicensed work.

How do I check a licence?

Ask to see the licence card, then check it online. The ARC offers a licence check at arctick.org. For electricians, check the licence with the state regulator. Our guides on checking an electrician’s licence and choosing an electrician explain how.

What should I ask an installer?

Ask for their ARC licence and electrical licence details, a written quote that lists what is included, who does the electrical connection, and what warranty applies. Ask them to explain how they chose the size and the position of the units.

Who is responsible if something goes wrong?

With licensed installers, there is a clear party to contact. With DIY work, you carry all the risk, and insurers and manufacturers may decline claims.

What does the installation visit involve?

Licensed people mount the units, connect the refrigerant pipes, make the electrical connection, commission the system and explain how to use it. Ask for the paperwork and keep it with your records.

What if a friend offers to help?

Even a friend with a trade background must hold the right licences for the work they do on your home. Ask to see the licence details, check them online, and get a written quote. If they cannot show current licences for both refrigerant and electrical work, do not proceed.