If you are planning to install a new split system air conditioner in Brisbane, understanding the costs involved is essential. The price you pay will depend on whether you are replacing an existing unit, the size of the system, and the complexity of the installation.
Here is a detailed breakdown of what you can expect to pay for split system AC installation in 2026.
Standard Back-to-Back Installation Costs
A "back-to-back" installation is the most common and straightforward scenario. It means the indoor unit is mounted on an external wall, and the outdoor compressor is placed directly outside on the ground or a concrete slab, with minimal piping required (usually under 3 metres).
For a standard back-to-back installation (labour and materials only, excluding the cost of the AC unit itself), expect to pay between $600 and $850.
Factors That Increase Installation Costs
If your property requires a more complex setup, the installation cost will increase. Common factors include:
- Extra Piping: If the indoor and outdoor units cannot be placed back-to-back, extra copper piping and conduit are required. This typically costs $50-$80 per additional metre.
- Wall Brackets or Roof Mounting: If the outdoor unit needs to be mounted on a wall bracket or on the roof rather than on the ground, expect an additional $100-$250.
- Double Storey Homes: Installations on the second storey often require longer piping runs and safe access equipment, adding $150-$300 to the total.
- Electrical Upgrades: Large AC units require a dedicated electrical circuit. If your switchboard needs upgrading to accommodate the new load, this will be an additional cost.
Replacement vs. New Installation
If you are replacing an old split system, the technician will need to safely decommission the old unit, recover the refrigerant gas (which is a legal requirement), and dispose of the system. This decommissioning process usually adds $100-$150 to the installation quote.
Why You Must Use a Licensed Installer
In Queensland, air conditioning installation must be performed by a technician holding an ARCtick refrigerant handling licence and an electrical licence. Attempting a DIY installation is illegal, dangerous, and will immediately void the manufacturer's warranty on your new unit.
At FCF Fire and Electrical Brisbane, we provide transparent, upfront quotes for all AC installations. For more advice on choosing the right unit, read our complete split system guide.