Split System Air Conditioning in Perth
Heat or cool multiple rooms with one outdoor unit, ideal for apartments, townhouses and homes with limited outdoor space.
30+ Years of Experience
Certified HIA Member
Best Customer Service
Targeted Cooling for the Space You Need
Split air conditioners are the practical solution for heating and cooling individual rooms without the need for ductwork throughout the property. A split air conditioner has two units: an indoor unit delivering quiet airflow, and an outdoor unit that contains the compressor, making it most suitable for Perth homes and commercial spaces. In addition to new installations, our qualified technicians are available to assist with upgrading the system, servicing, maintenance, and repairs of your existing system air conditioners.
Sized For Every Space
Keep your home and workspace comfortable with split air conditioners from Complete Air Systems. We offer a wide range of energy-efficient split air conditioning systems to suit different cooling and heating needs. Our technicians will assess your property, explain the options, and help you choose the right split air conditioner.
Our technician will expertly assess the following factors:
- Room size and layout
- Overall heating and cooling requirements
- Insulation
- Sun exposure
- Ceiling height
- Indoor and outdoor unit placement
Once identified, our expert technicians will recommend a suitable split AC brand and plan the installation based on your availability.
Find the Split System That Fits Your Space
Complete Air Systems offers a range of split air conditioners to suit different properties across Perth.
Mitsubishi Electric AP Series
A compact, wall-mounted split air conditioner is the best fit for living rooms, bedrooms, and spaces where quiet operation is important.
Mitsubishi Electric MSZ-EF Series
A slim, modern split air conditioner known for offering energy-efficient cooling and heating.
Mitsubishi Electric MSZ-LN Series
For those looking for energy-efficient performance and a modern look, this model is the one to go for. It is a premium air conditioning system that comes with advanced technology.
ActronAir Serene Series
Wall-mounted split systems with reverse cycle operation, designed for quiet performance and everyday comfort.
Practical Advantages That We Bring
Enjoy year-round comfort with efficient Split Systems
Individual temperature control:
Most of our work comes from referrals from homeowners and from construction-related work throughout Perth.
Energy-efficient comfort:
Heat or cool only the space you need, helping manage energy consumption and running costs.
Flexible installation:
Wall-mounted indoor units offer practical installation options for living rooms, bedrooms, and office spaces.
Year-round comfort:
Reverse-cycle split systems provide both heating and cooling to keep your room comfortable across seasons.
Recommended by Homeowners and Builders:
Most of our work comes from referrals from homeowners and from construction-related work throughout Perth.
Leading Split System Air Conditioner Brands
Split AC Unit Installation Process
We make the process hassle-free, from assessing the space to handing over your new system.
📐 Assess the Space
Our team will assess the size of your rooms, capacity, and insulation to identify a suitable split air conditioner.
📍 Plan the Installation
Our team will plan the placement of indoor and outdoor units to ensure good airflow and a tidy pipe layout.
🛠️ Install the System
Our qualified technicians will install the split air conditioner safely and neatly, following OHS regulations.
✅ Test & Hand Over
Our team will test the system, ensuring that it is functioning correctly, and guide you through how to use it.
Why Choose Complete Air Systems
- 30 + Years of Industry Experience.
- We custom design systems suiting your individual 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 provide a 5-year warranty on all installations
- We offer flexible payment plans
What Perth Property Owners Have To 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
As a general starting guide:
| Room Area | Indicative System Capacity |
| Up to 17 m² | 2.6 kW |
| Up to 25 m² | 3.5 kW |
| Up to 35 m² | 5.0 kW |
| Up to 50 m² | 7.1 kW |
| Up to 60 m² | 8.0 kW+ |
Room size is only part of the calculation. Ceiling height, insulation, glazing, direct sunlight and openings into adjoining spaces also affect the capacity required.
We assess these factors before recommending a system, so use this table as a guide rather than a final sizing recommendation.
The price depends on the brand, system capacity, and installation requirements. The following ranges provide a budgeting guide for supply and basic installation.
| Typical Application | System Size | Typical Installed Price Range |
| Small bedroom | 2.5–2.6 kW | $2,000–$2,700 |
| Bedroom or small living area | 3.5 kW | $2,100–$2,900 |
| Medium living area | 5.0 kW | $2,500–$3,500 |
| Large living area | 7.0–7.2 kW | $2,800–$4,000 |
| Large open-plan area | 8.0–9.0 kW | $3,000–$5,300 + |
Prices include GST and represent typical budget ranges for basic installations without extras. Additional pipework, difficult access, removal of an existing system and electrical upgrades may increase the price. Room descriptions are a guide only; we assess the space to confirm the required capacity. Your final quote may be lower or higher and will confirm the scope, inclusions and price.
Choose a comfortable, moderate temperature, close external doors and windows, and keep the filters clean. Use blinds or curtains to reduce direct sunlight and close doors to areas you don’t need to condition.
Setting a very low cooling temperature won’t make the room cool faster. Use the timer or scheduling features to match your routine, and switch the system off when the space won’t be used for an extended period.
For a regularly used home system, we generally recommend professional servicing annually. Heavily used systems may need more frequent attention. If performance drops, water leaks or unusual noises develop, arrange an inspection rather than waiting for the next scheduled service. Dusty environments and homes with pets may require more frequent cleaning.
A single split system is generally designed to condition one room or connected open-plan area. Some air may reach adjoining rooms through open doors, but temperatures are unlikely to be consistent, particularly around corners or behind closed doors.
Installing a larger unit won’t necessarily solve poor air distribution. If you want reliable comfort across separate rooms, individual splits, a multi-split system or ducted air conditioning may be more suitable.
We only install systems that we supply. This allows us to recommend the right equipment for your space and manage the supply and installation together, giving you one point of contact throughout the process.
Split System Air Conditioners Designed for Perth Homes
Complete Air Systems is able to provide assistance to any Perth homeowner looking to buy split system air conditioning. From choosing AC systems to installation, our certified team will help you find the best split system suitable for your Perth home. Don’t hesitate to reach out to us with your air conditioning requirements, and we will get back to you with competitive pricing.
Let’s get your project started.
Tell us what you need and our friendly Perth team will be in touch within one business day.
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