Home / Multi-head split systems
Multi-head split system installation in Melbourne
Several rooms heated and cooled from one outdoor unit, each with its own control and no ductwork.
- VEU accredited provider
- Licensed and insured
- Clear, written quotes
Discount applied on your quote, paperwork handled
ARCtick refrigerant and REC electrical licences
Fixed price, itemised, no pressure to decide on the day
Workmanship warranty and servicing by the installing team
What is a
multi-head split system?
A multi-head split connects two to five indoor units to a single outdoor unit.
- Each room has its own controller, so a bedroom can be cool at night while the living room is off.
- With no ducts in the roof, nothing is lost to the roof space.
It is a good fit for double-storey homes, townhouses, units and homes without usable roof space, and for replacing several gas space heaters at once.
Installed prices depend on the number of rooms and pipe run lengths; your written quote lists each room.
Packages, fully installed
Every package lists exactly what is included. Your price is confirmed in writing after the home assessment.
Three-room multi-head
One outdoor unit, three wall units
- Wall units sized to each room
- Each room on its own controller
- Pipe runs in covered ducting
- Condensate drains to a proper outlet
- Gas wall or space heater removed
- Workmanship warranty plus manufacturer warranty
*Prices are fully installed, after the Victorian Energy Upgrades discount where a gas ducted heater is removed and the home is eligible.
Your price is confirmed in writing after the home assessment. Brand options: Daikin, Fujitsu, Mitsubishi Electric and Panasonic.
How does a
multi-head split work?
The outdoor unit circulates refrigerant to each indoor unit through insulated pipe runs.
Each indoor unit heats or cools its room independently, and the outdoor unit adjusts its output to match the rooms that are running.
The design work is in the placement: where each indoor unit sits for airflow and appearance, and how the pipes travel between rooms.
What we check at your home
- Which rooms need heating and cooling, and how they are used
- Indoor unit type and position in each room
- Pipe run routes, lengths and how they are concealed
- Outdoor unit position and noise to neighbours
- Total capacity so every room performs on the hottest day
- Switchboard capacity and the circuit required
- Any gas wall or space heaters to remove
Sizing guide
A starting point only. We size your system from measured rooms, insulation and window orientation.
A common starting point for units and smaller homes.
Our most popular multi-head configuration.
Close to whole-home comfort without ducting.
Running costs
and how to lower them
A correctly sized inverter system adjusts its speed instead of switching on and off, which keeps running costs down. The rest comes down to how it is used.
- Cool to 24 to 26 degrees and heat to 18 to 21 degrees; each degree further adds roughly 10 percent
- Use zones or close doors so you only condition the rooms you use
- Close curtains and blinds on hot afternoons
- Keep filters clean and service once a year
- Improve ceiling insulation where you can
At the assessment we estimate running costs for your home so you can compare options properly.
How we work
We listen first
Which rooms are uncomfortable, how the house is used, what is installed now and when you need a decision.
We measure your home
Room sizes, insulation, roof space, existing ductwork, switchboard capacity and the best outdoor unit position.
We explain your options
Usually two or three, with what each costs to run and which one we would choose for your home.
You get a clear, written quote
Equipment, inclusions, exclusions, any discount and your final price. No pressure to decide on the day.
Installed carefully, cleaned up after
You know who is coming and when. Handover ends with the controller in your hand and the paperwork in your inbox.
Frequently asked questions
about multi-head split systems
Usually two to five indoor units. We check the total capacity against the outdoor unit so every room still performs on a 40 degree day.
Several single splits need several outdoor units. A multi-head keeps one outdoor unit, but every room depends on it. We weigh both for your house and the quote explains the choice.
Bulkhead units sit inside a ceiling bulkhead with only a grille visible. They need the ceiling space and cost more to install, so we recommend them where appearance matters.
It can be, when it replaces an eligible gas heater. We confirm eligibility at the assessment and apply it on your quote.
Get a clear, written quote for the right system.
A licensed installer visits, measures your home and explains your options. No pressure to decide on the day.
Brands we install
We install trusted household names and recommend the model that suits your home, not the one with the biggest margin.
Installation, servicing
and repairs
The team that installs your system services it. The first service is included, and after that we send a reminder each year so small faults are found before the first heatwave, not during it.
- Filter and coil clean
- Refrigerant pressures and electrical checks
- Drain flush and airflow check, recorded in your file
Installation locations
across Melbourne
Our assessment and installation teams cover metropolitan Melbourne, bayside and the Mornington Peninsula.
What our customers say
Reviews are published with permission, with the customer's name, suburb and month.
“He measured every room and explained why the smaller unit was the right one. The invoice matched the quote.”
“Drop sheets down, cable covers on, and they showed us photos of the roof space before and after.”
“No pressure at all. We compared three quotes and this was the one where we understood what we were paying for.”
Why choose Aircore
Clear advice, careful installation and support that does not disappear once the job is done.
VEU accredited provider
Discount applied on the quote
Licensed and insured
ARCtick and REC licensed
Assessment before every quote
Measured in your home
Clear, written quotes
Fixed price, itemised
Workmanship warranty
On every installation
First service included
Same team comes back
Installed carefully
Drop sheets down, cleaned up after
Melbourne-wide
Metro, bayside and the peninsula
Stay comfortable all year round.
Get a clear, written quote for the right system.