Multi-Split Air Conditioning Perth
Heat or cool multiple rooms with one outdoor unit, ideal for apartments, townhouses and homes with limited outdoor space.
30 + Years Experience
Quality Workmanship
Perth-Based Team
Air Conditioning For Multiple Rooms Without Multiple Outdoor Units
A multi-split air conditioning system connects several indoor units, providing heating and cooling across multiple rooms without the need for separate outdoor units. It is particularly suited to apartments, townhouses, and multi-level homes where balcony, courtyard, or external wall space is limited. Complete Air Systems assesses your property’s layout, available installation space, and heating and cooling requirements to recommend a suitable system for your needs.
Designed Around The Way Your Home Works
A multi-split air-conditioning system needs careful planning to deliver effective heating and cooling across different rooms. The outdoor unit must have sufficient capacity, with each indoor unit correctly sized and positioned for effective performance.
✔️ Number of rooms being conditioned
✔️ Room sizes and layouts
✔️ Insulation, windows, and sun exposure
✔️Simultaneous heating and cooling demand
✔️ Indoor unit positioning
✔️ Outdoor unit location
By assessing your system requirements, our team will recommend a multi-split air conditioning system suiting as per your space requirements.
Comfort Across The Rooms That Matter Most
Choose the right multi-split air conditioning system for your everyday comfort
Two-Room Systems
Ideal for apartments and smaller homes that need heating and cooling in two separate rooms, such as a living area and bedroom, or two bedrooms requiring individual temperature control.
Three-Room Systems
A practical option for family homes and townhouses that need heating and cooling across three rooms, such as living areas, bedrooms, and home offices.
Four-Room Systems
Suitable for larger homes and multi-level properties that require individual temperature control across four frequently used rooms.
Larger Multi-Unit Configurations
Ideal for larger homes, multi-level townhouses, and suitable commercial spaces that require heating and cooling across several rooms.
What Makes a Multi-Split Air Conditioning System Better for Your Space
Bring comfort to every part of your space with the setup that uses just one outdoor unit to power several indoor spaces.
Individual Room Control:
You can adjust the temperature. Turn indoor units on or off depending on how each room is being used. This way, you’re not wasting energy on rooms.
Saves Outdoor Space:
Having one outdoor unit helps keep your balcony, courtyard, or garden free and usable. This is especially helpful in apartments and townhouses where the space is limited.
Efficient Energy Use:
You can cool only the rooms you’re using and leave the others off. This helps you save energy and keep your bills lower.
No extensive ducting required:
Multi-split systems don’t need ceiling or underfloor ducts. That makes them a good fit for homes and apartments that are already built.
Leading Ducted Air Conditioning Systems Brands
Installing Multi-Split Air Conditioning Made Simple
From assessment to installation and final handover, our four-step process covers every stage
📐 Assess The Space
The team will assess your room sizes, layouts, insulation, and available outdoor space to determine the appropriate system capacity and configuration.
📍 Plan Before Install
We plan the placement of indoor and outdoor units, refrigerant pipework, and electrical connections to suit your property’s layout and installation requirements.
🛠️ Install With Care
Our technicians install the indoor and outdoor units, complete the necessary connections, and ensure the work is carried out with care.
✅ Test & Hand Over
We test the system’s operation, check each indoor unit, and explain how to use the controls before handing it over.
Why Choose Complete Air Systems
- 30+ Years of Industry Experience.
- We custom design systems to suit your individual lifestyle needs.
- We offer complete services including design, supply, installation, and servicing and maintenance.
- We have supervisors on-site during the installation to ensure that all work is carried out to the highest standards and the site is thoroughly cleaned after the installation. We custom design systems to suit your individual lifestyle needs.
- We provide a 5-year warranty on all installations.
- We offer flexible payment plans.
What Perth Homeowners Say About Us
Ross Hall
Nick Gye
Aurelia Caruso
Seems all good but it was very quick, just hoping it was done properly. 😊
Norm Golding
Lorretta Jackson
Terrible organization, got quoted 1 prize and the cost on completion was double, no additional work or parts added. Techs were good but I booked for 1 day service and I received 2 different technician even though I booked for the same day service, and 1 week apart
Plan B
Fantastic service from booking to completion of job. System is as good as new.
carol little
Company was able to provide me with a prompt service when I required assistance I would recommend this company to assist with your Air conditioner issue/installations.
Mark Borrello
Excellent service and great professional staff
Daniela Calcan
Dean H
I had three split systems installed by Complete Air Systems. They were quick, efficient and clean. It was a hard job due to the low roof pitch on my home, but nothing was too much for the team. Happy with thier service and would recommend!
Sorcha Hills
Absolutely 10/10 customer service. I’ve been impressed from initial contact through to going above & beyond to make the final payment easy for me. Highly recommended!
Leanne O'Leary
Very knowledgeable and helpful. They were also reliable and communicated well so I always knew where my job was at.
Hover to pause · based on Google reviews
FAQs
The number depends on the outdoor unit and the combination of indoor units selected. Some systems support two or three indoor units, while larger models can connect up to eight. The outdoor unit’s capacity is shared between the rooms operating at the same time. We size the system around the rooms you want to condition and how you expect to use them.
Standard residential multi-split systems operate in either heating or cooling mode at any one time, so you can’t heat one room while cooling another. You can still switch individual indoor units on or off and select different room temperatures within the same operating mode.
A multi-split connects several indoor units to one outdoor unit, reducing the number of outdoor units around your property. Each indoor unit has its own controls. Individual split systems each have their own outdoor unit, allowing them to operate independently—including heating one room while cooling another.
If one system breaks down, the others can continue operating. A multi-split isn’t automatically cheaper to install or run. We compare the options based on your layout, available outdoor space, and how you use each room.
Sometimes, provided the outdoor unit has spare connections and sufficient capacity, and the additional indoor units are compatible.
If you’re considering adding rooms later, tell us during the initial design. We can assess suitable equipment and installation provisions, although future additions will still depend on compatibility and product availability.
Yes. A multi-split can be a practical option when you want to condition several rooms but have limited space for outdoor units. We assess outdoor unit placement, airflow, noise, pipe routes, and drainage before recommending a system. For strata properties, any required approvals also need to be addressed before installation.
One System For Multiple Rooms
Enjoy comfortable cooling & heating across multiple rooms without the need for several outdoor units. Whether you are planning a new installation or wish to upgrade the existing air conditioning, our team is available to assist you. Get in touch with Complete Air Systems to discuss the right air conditioning setup for your space.
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