Split-system Installations
Split-System Air Conditioning Installation
At Westaus Electrical Services, we provide professional split-system air conditioning installation, ensuring efficient cooling, safe operation, and optimal comfort for your home or business. Our licensed electricians handle every installation with precision, ensuring compliance with industry standards and maximising energy efficiency.
- Expert installation for efficient and reliable cooling
- Safe decommissioning & removal of old units
- Energy-saving solutions tailored to your needs
Why Choose a Split System Air Conditioner?
Split systems are one of the most popular cooling and heating solutions for Australian homes, offering excellent comfort with low running costs.
Energy Efficient
Modern inverter split systems automatically adjust their output to maintain your desired temperature, using significantly less electricity than older systems.
Heating & Cooling
Enjoy comfortable temperatures all year round with both cooling in summer and efficient heating during winter.
Quiet Operation
Indoor units operate quietly, making them ideal for bedrooms, living areas, home offices and apartments.
Cost Effective
Split systems are generally far more affordable to install than ducted air conditioning while still providing excellent climate control for individual rooms.
Individual Room Control
Only cool or heat the rooms you’re using, helping reduce your electricity bills.
Standard Back-to-Back Split System Installation
Our fixed-price installation is based on a standard back-to-back installation, which is suitable for many homes.
A back-to-back installation means the indoor unit is mounted on an internal wall with the outdoor unit positioned directly behind it on the outside wall. This allows the refrigeration pipework, electrical cable and condensate drain to pass straight through the wall, keeping pipe runs short and installation costs lower.
A standard back-to-back installation typically includes:
- Installation of one indoor wall-mounted unit
- Installation of one outdoor condenser on the ground or suitable mounting location
- Up to approximately 3 metres of refrigeration pipework
- Electrical interconnecting cable
- Condensate drain connection
- Wall penetration through brick, timber or cladding
- UV-stable ducting where required
- Pressure testing and vacuuming of refrigeration pipework
- Electrical testing and commissioning
- System startup and operational demonstration
- Removal of installation rubbish
When Is Additional Work Required?
Every home is different. Additional charges may apply where installations require:
- Long refrigeration pipe runs
- Double-storey properties
- Roof space access
- Concrete or difficult wall penetrations
- Wall brackets or roof mounting
- Switchboard upgrades
- Dedicated electrical circuits – From 3.5kw units
- Safety switches (RCD/RCBO)
- Existing air conditioner removal
- Crane or specialised access equipment
If your installation isn’t a standard back-to-back setup, we’ll provide a clear quotation before any additional work begins.
Split System Installation Prices (Inclusive of GST)
Back to back – 3m pipe – 15m electrical (up to 3.5kw only)
Hisense J Series
Cost-effective performance for budget-conscious installations:
| Product Description | Price (including GST) |
|---|---|
| 2.5kW | From $1,699 |
| 3.5kW | From $1,899 |
| 5.0kW | From $1,999 |
| 7.0kW | From $2,450 |
| 8.0kW | From $2,850 |
Mitsubishi Heavy Industries Avanti Plus / Bronte Series
Reliable cooling performance for consistent day-to-day residential use:
| Product Description | Price (including GST) |
|---|---|
| 2.5kW | From $2,080 |
| 3.5kW | From $2,280 |
| 5.0kW | From $2,775 |
| 6.3kW | From $3,175 |
| 7.1kW | From $3,370 |
| 8.0kW | From $4,020 |
Daikin CORA / XL Series
Advanced energy efficiency and feature set for homeowners prioritising long-term performance:
| Product Description | Price (including GST) |
|---|---|
| 2.5kW | From $2,100 |
| 3.5kW | From $2,345 |
| 5.0kW | From $2,820 |
| 6.0kW | From $3,070 |
| 7.1kW | From $3,270 |
Supply your own AC – Back to back Install
| Product Description | Price (including GST) |
|---|---|
| 2kW - 4kW | From $799 |
| 4kW - 7.5kW | From $899 |
| All units 7.5kW and above | From $999 |
Prices Guide for Extras
| Product Description | Price (including GST) |
|---|---|
| Site Inspection – Consultation fee | $89 |
| Decommission of old unit and safe disposal of old unit | From $199 (or $149 in-conjunction with new installation) |
| Wall bracket fitted | $129 |
| Extra piping/cable/drain between indoor & outdoor | From $70 p/m |
| Double storey fee | From $199 |
| Side entry | From $129 |
| New dedicated circuits up to 20m | From $350 - $600 |
Request a Quote
Contact Westaus Electrical Services today for a competitive fixed-price quote. We’ll help you choose the right installation option and ensure your new system is installed safely, efficiently and to the highest standard.
Use the online form to enquire about our range of quality split-system air conditioner products, installation and inspection services.
Why Choose Us

Licensed & Experienced
Our licensed and experienced electricians deliver safe, high-quality electrical solutions, ensuring compliance with industry standards for homes and businesses.

Reliable & On-Time Service
We provide reliable, on-time service, ensuring every project is completed efficiently, professionally, and with minimal disruption to your home or business.

Satisfaction Guaranteed
We prioritise customer satisfaction, delivering high-quality workmanship, transparent communication, and reliable service to ensure every client is completely satisfied.
Testimonials
Hear from our satisfied clients who trust us for reliable electrical, commercial, air conditioning, and data services. Their feedback reflects our commitment to quality, safety, and exceptional customer service
Posted on Lisa LumbTrustindex verifies that the original source of the review is Google. We’ve been using Westaus for years and years, from small jobs to bigger ones like replacing/moving the kitchen and all its appliances and even replacing the circuit board in our home. Always professional, thinking outside the box to find the best possible solution to our needs and for a good price too. Highly recommend!Posted on Sharon MerrittTrustindex verifies that the original source of the review is Google. Awesome quick response and service - well priced as well. Thank youPosted on Daniel MorrisTrustindex verifies that the original source of the review is Google. Abbas is careful and thorough, responsive and punctual. He looks for ways to deliver his services cost effectively and explains what he's done and what he's found in a way that you can understand without having to be an electrician. I recommend Abbas' services.Posted on H MiTrustindex verifies that the original source of the review is Google. Abbas and his team are the best electricians in Perth! They recently assisted us with our kitchen and laundry renovation, and they did a fantastic job. Abbas communicates promptly and demonstrates a high standard of professionalism. His team helped us remove the old appliances, install new power points and the new appliances, along with a dimmable pendant light. The team was friendly, efficient, punctual, and always made sure to clean up after themselves. We absolutely love our new kitchen! Thank you, Abbas, and your team! I highly recommend Westaus and will definitely use their services again in the future.Posted on Michelle ParkerTrustindex verifies that the original source of the review is Google. Absolutely outstanding service , they arrived right at the scheduled time , listened to everything I needed and explained everything to me. They contacted me with anything additional that needed doing and gave me a price on the spot. The overall charges were very reasonable and the guys were friendly , efficient and upfront which I appreciated. They did a fantastic job of everything and I would highly recommend them to anyone. Thank you to Westaus for making a sometimes stressful situation completely stress free. If you need electrical work done definately give them a call.Posted on Lili ZhengTrustindex verifies that the original source of the review is Google. Abbas is the best electrician you can find in Perth. We recently hired him to upgrade the electrical system in our investment property. From start to finish, he was incredibly efficient and exceeded our expectations. His work is of the highest standard. He accommodated our request on short notice, arrived on time, and completed the job thoroughly and professionally. The pricing was very reasonable, and the service was excellent!Posted on Hooman SamimiTrustindex verifies that the original source of the review is Google. Westaus Electrical Services provides highly professional and reliable electrical services based on my experience of utilising them for residential work on a number of occasions. Their electrians are knowledgeable and prompt and clearly communicate the scope and potential costs upfront with clarity. After some challenges over the years in identifying electrians with quality workmanship in Perth metro, Westaus Electrical are highly recommended.Posted on AleishaTrustindex verifies that the original source of the review is Google. Thank you, I had a really great experience using Abbas, he was genuine, polite, friendly and overall has a really nice presence. He was efficient, reliable and trustworthy. I will definitely be contacting again in future, whenever i need an electrician. Glad i found him! 2023 update- I have since used Abbas again, still the best service and I still think he’s the greatest guy! 2024 update - to mention Abs team, this includes Aaron and Ben, I want to mention how wonderful they and so efficient, best team. Have had Aaron and Ben over many more times this year and will continue using!Load more
Accreditations
We are proud to be accredited by industry-leading organizations, ensuring our electrical, commercial, air conditioning, and data services meet the highest standards of safety, quality, and professionalism.
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