Split System Air Conditioner Installation in Sydney by AK Air Conditioning & Electrical Quality Service

* Can I install a split-system air conditioner on an internal wall?

Yes, but it requires more complex planning. Installing on an internal wall often means extra ductwork to reach the outdoor unit, which may increase installation time and cost. A qualified technician will assess the best routing for piping, drainage, and electricals to ensure efficient performance.

* Will installing a split-system void my home’s builder warranty?

It might — if not installed by a licensed professional or if structural changes are made without proper approval. Always check with your builder and use certified installers to ensure your warranty remains intact and your air conditioner is compliant with building regulations.

* Can the outdoor unit be placed far away from the indoor unit?

Yes, within limits. Most systems allow up to 15–20 metres of piping, but performance may be affected the further apart they are. A professional installer will calculate optimal placement to balance efficiency, airflow, and refrigerant flow.

* Can I install a split system air conditioner myself in Australia?

No. Under Australian law, installing a split system requires a licensed refrigeration technician holding an ARC (Australian Refrigeration Council) license to safely handle refrigerant gases. Additionally, electrical connections must be completed by a licensed electrician to comply with AS/NZS 3000 wiring standards. Attempting a DIY installation not only carries steep legal fines, but it will also void your manufacturer’s warranty and can compromise your home insurance.

* How do I know what size (kW) split system is right for my room?

Selecting the right capacity depends on room dimensions, ceiling height, window placement, wall insulation, and local climate. As a general guide for standard 2.4m ceilings:
Small Bedrooms / Home Offices (up to 15m²): 2.0 kW – 2.5 kW
Master Bedrooms / Medium Living Areas (15m² – 25m²): 2.5 kW – 3.5 kW
Large Open-Plan Living Spaces (25m² – 45m²+): 5.0 kW – 7.1 kW+
An undersised unit will work constantly and spike your power bills, while an oversised unit will turn on and off rapidly, leaving humidity in the room. Contact our team for an accurate heat load assessment to ensure optimal efficiency.

* How long does a standard split system installation take?

A single back-to-back split system installation typically takes between 3 to 5 hours to complete. If your setup requires a new dedicated electrical circuit from your switchboard, complex wall penetrations, or mounting the outdoor unit on a roof bracket, it may take slightly longer. Our installers aim to complete most residential jobs in a single morning or afternoon with minimal disturbance to your day.

* Does a new split system require a dedicated electrical circuit?

In most cases, yes. Modern air conditioners are high-draw appliances that demand a stable, direct connection to your switchboard. Connecting a split system to a standard household power circuit can overload your system, trigger trip switches, and create electrical hazards. During our initial assessment, we check your existing switchboard to determine if a dedicated circuit or safety switch upgrade is required for compliance.

* Where are the best locations to install the indoor and outdoor units?

Optimal placement ensures maximum airflow and lower running costs:
Indoor Unit: Positioned high on a central wall, away from direct sunlight, doorways, or heat sources, so air circulates evenly throughout the entire room.
Outdoor Unit: Installed on a stable concrete pad or wall bracket in a shaded, well-ventilated location with adequate clearance for heat release.
Our technicians conduct a thorough site inspection before drilling to confirm the most efficient layout for your space.

* Why should I choose a reverse-cycle split system over portable or window units?

Reverse-cycle split systems are significantly quieter, more aesthetically pleasing, and up to three times more energy-efficient than portable or window units. By utilising inverter heat pump technology, they extract heat from the outside air in winter and pull heat out in summer, offering a complete climate solution year-round. They also feature air filtration to reduce dust, allergens, and humidity inside your home.