No, you cannot legally install a split system or ducted air conditioner yourself in Australia. Two separate licences are required: an ARCtick licence from the Australian Refrigeration Council to handle refrigerant, and a state-issued electrical licence for all fixed wiring work.
These requirements apply in every state and territory. Attempting a DIY installation risks fines, voiding the manufacturer’s warranty, and creating genuine safety hazards. The one exception is a basic plug-in window or wall box unit that requires no refrigerant work. These can generally be fitted by a competent handyperson, though an electrician may still be needed if there is no suitable power point nearby.
Blue Mountains Air holds all required licences and carries full insurance, so your installation is done correctly and covered from day one.
