- What we install
- Wall-mounted split systems, multi-head split systems and ducted reverse-cycle air conditioning
- Brands we have installed
- Mitsubishi Heavy Industries, Midea and Haier
- Electrical work
- Its own circuit and safety switch at the switchboard, plus an outdoor isolator
- Paperwork
- Certificate of Electrical Safety and a plumbing Certificate of Compliance
- Who does it
- Licensed electricians (REC 30925), with plumbing and refrigerant licences for the install
Split system, multi-head and ducted air conditioning
We install refrigerated, reverse-cycle air conditioning: one system that heats in winter and cools in summer. There are three types, and the right one depends on how many rooms you want to heat and cool.
| Type | What it suits | Worth knowing |
|---|---|---|
| Wall-mounted split system | One room or an open-plan living area | One indoor unit on the wall and one outdoor unit outside. The most common install and the quickest to fit. |
| Multi-head split system | Two or more rooms, or a home with little outdoor space | Several indoor units run from one outdoor unit, so there is only one unit outside. Each room has its own remote and temperature. |
| Ducted reverse-cycle | Heating and cooling the whole home | A hidden indoor unit, usually in the roof space, feeds a vent in each room through ducts. Zones let you run only the rooms you are using. |
We do not install evaporative coolers or ducted gas heating. If you are replacing an old gas heater, a reverse-cycle system does both jobs, and it may qualify for a discount (see below).

Choosing the right size and position
An air conditioner that is too small runs flat out and still struggles on a hot afternoon. One that is too large switches on and off constantly and wastes power. We size the system for the room, not just the floor area:
- Room size and ceiling height. Open-plan areas and raked ceilings need more capacity than the floor area suggests.
- Sun and insulation. West-facing glass and a poorly insulated roof add a lot of heat in summer.
- Winter heating. In Geelong a reverse-cycle system often does most of its work as a heater, so we size it for cold mornings as well as hot days.
As a rough guide, a small bedroom often suits about 2.5 kW, a typical living room about 5 kW, and a large open-plan area 7 kW or more. Most of our recent installs have been 5 kW and 7 kW units. We confirm the size on site before you go ahead.
Position matters too. The indoor unit goes high on a wall where it can reach the whole room without blowing straight onto a bed or the couch. The outdoor unit needs a solid base or wall brackets, room for air to flow around it, and a spot where its noise will not bother you or your neighbours.

Talk to a licensed Geelong electrician (REC 30925).
How we install a split system
A split system is an electrical job and a refrigeration job in one. Both halves matter: a neat indoor unit on badly prepared pipework, or on an overloaded circuit, will not last.
- Mark the positions with you. We agree where the indoor and outdoor units go and how the pipework will run between them.
- Mount the indoor unit. The mounting plate is fixed to the wall and levelled, so the unit sits straight and the condensation drains the right way.
- Run the pipework and cable. The insulated copper refrigerant lines, the drain and the interconnecting cable go through the wall to the outdoor unit, with a pipe cover outside where they would otherwise be on show.
- Vacuum the pipework. Before the refrigerant is released, the new pipework is pumped down with a vacuum pump and held on a digital vacuum gauge. That removes the air and moisture that would shorten the system's life and shows the joints are sealed.
- Wire it in. A dedicated circuit from the switchboard, protected by its own safety switch, and a weatherproof isolator beside the outdoor unit.
- Commission and hand over. We run the system in heating and cooling, check the airflow and the drain, and show you the remote and how to take out the filters.
- Certificates. You receive a Certificate of Electrical Safety for the electrical work and a plumbing Certificate of Compliance for the air conditioning installation.

A dedicated circuit at your switchboard
Every air conditioner we install gets its own circuit. On a recent 5 kW install in Leopold that meant a new 16 amp RCBO (a circuit breaker and safety switch in one) labelled for the air conditioner, a weatherproof isolator outside, and new surge protection in the same switchboard. The circuit and the isolator are sized to the unit's rating.
Older homes may not have room on the switchboard for another circuit, or may still have ceramic fuses and no safety switches. We check the switchboard and the existing load before we quote, and if it needs work we tell you then, not on the day. A switchboard upgrade can be done as part of the same job.
An air conditioner is one of the biggest loads in most homes, alongside an oven and an electric hot water service. Its own circuit means a fault in the unit trips only the air conditioner, and the rest of the house stays on. More on safety switches and surge protection.

Replacing an old or failed air conditioner
Many of our air conditioning jobs replace an old unit: one that has stopped heating, has become noisy or expensive to run, or has failed outright. On one Leopold job the old outdoor unit and its isolator had burnt out, and we installed a new 5.1 kW split system in its place. In another Leopold home an old unit was replaced with a 5 kW Mitsubishi Heavy Industries system.
When we replace a unit we check the existing circuit and isolator rather than assume they are fit to reuse, and fit new ones where they are worn or not rated for the new unit. If the existing pipework does not suit the new system, we run new pipework.
If your air conditioner trips the safety switch, smells of burning or has scorch marks around the isolator, switch it off at the switchboard and do not use it until it has been checked. Those are signs of an electrical fault. Our 24/7 emergency electricians can come out day or night.

Not sure what you need? Tell us what is happening and we will talk it through.
Victorian Energy Upgrades (VEU) discounts
The Victorian Energy Upgrades program offers discounts on some efficient reverse-cycle air conditioners, including when one replaces an old gas or electric heater. Recent installs of ours in Lara and St Leonards included a VEU discount.
Whether your home qualifies depends on the unit, the heater it replaces and the program's rules at the time, so ask us when you book your quote and we will check for you.
Air conditioner servicing and fault finding
A split system that is never cleaned loses airflow, works harder for the same result and can start to smell. We service split systems as well as installing them: cleaning the filters, checking the drain and the airflow, and checking the outdoor unit, its isolator and the electrical connections.
- Filters: rinse them yourself every few weeks while the system is in heavy use. It takes five minutes and makes a real difference.
- A professional service: about once a year for most homes, or more often in a dusty spot or a home with pets.
- Fault finding: a unit that will not start, trips a breaker, drips water inside or blows warm air when it should be cooling needs a look. We find the fault and tell you whether a repair or a replacement makes more sense.

Recent air conditioning jobs around Geelong
Recent jobs include:
- Bannockburn: a new 5 kW Mitsubishi Heavy Industries split system replacing an older unit
- St Leonards: a 7 kW Mitsubishi Heavy Industries split system with a VEU discount
- Leopold: two replacement split systems, one after the old outdoor unit burnt out
- Geelong West: a 5 kW Mitsubishi Heavy Industries split system
- Lara: Haier split systems, one replacing an old gas heater
- Hamlyn Heights and Highton: split system servicing and filter cleaning
The brands we have installed most recently are Mitsubishi Heavy Industries, Midea and Haier, and we can supply the unit as part of the job.
Why choose CabledIN for your air conditioning
- Licensed Victorian Registered Electrical Contractor, REC 30925, and licensed for the plumbing and refrigerant work as well
- One team for the whole install: the units, the pipework, the circuit, the isolator and both certificates
- More than 20 years in the trade, based in North Geelong
- Lifetime workmanship warranty
- 2,000+ five-star Google reviews
Call 1300 025 555 or request a quote online.
More from our air conditioning installs
Photos from our own split system jobs around Geelong and the Bellarine.


Frequently asked questions
How much does air conditioning installation cost in Geelong?
It depends on the type and size of the system, how far apart the indoor and outdoor units are, the wall construction, and whether the switchboard needs a new circuit or an upgrade. We quote after seeing your home, so the quote covers the whole job.
How long does a split system installation take?
A single split system is usually installed in one visit. Multi-head systems, ducted systems and installs that need switchboard work take longer, and we tell you what to expect when we quote.
What size air conditioner do I need?
As a rough guide, about 2.5 kW for a small bedroom, about 5 kW for a typical living room and 7 kW or more for a large open-plan area. Ceiling height, windows, insulation and winter heating all change the answer, so we confirm the size on site.
Should I choose a split system or ducted air conditioning?
A split system suits one room or one open living area and is the quickest and simplest to install. Ducted suits heating and cooling the whole home with hidden vents and zones, but it needs suitable roof space. A multi-head split system sits in between: several rooms from one outdoor unit.
What is a multi-head split system?
It is one outdoor unit that runs two or more indoor units, each in its own room with its own remote and temperature. It suits homes that want several rooms done without a row of outdoor units on the wall.
Do you install evaporative cooling or ducted gas heating?
No. We install refrigerated reverse-cycle air conditioning only: wall-mounted split systems, multi-head split systems and ducted systems. Each one heats as well as cools.
Can I get a VEU discount on a new air conditioner?
Possibly. The Victorian Energy Upgrades program offers discounts on some efficient reverse-cycle air conditioners, including when one replaces an old gas or electric heater. Ask us when you book your quote and we will check whether your home qualifies.
How often should a split system be serviced?
Rinse the filters every few weeks while the system is in heavy use, and have it professionally serviced about once a year, or more often in a dusty spot or a home with pets.
What certificates do I get after an air conditioner installation?
Two. A Certificate of Electrical Safety for the electrical work, and a plumbing Certificate of Compliance for the air conditioning installation itself. Keep both with your home's records, since a buyer, an insurer or the manufacturer may ask for them.
Do you need a licence to install a split system in Victoria?
Yes. The electrical connection must be done by a licensed electrician. In Victoria, installing the system itself is plumbing work, done by a licensed plumber who is also licensed to handle refrigerant. Our team holds all three licences, and you receive a Certificate of Electrical Safety for the electrical work and a plumbing Certificate of Compliance for the installation.
Still have a question? Ask the CabledIN team.