39,000+
successful customer jobs
Maximiliano VR.
Ryan came today to check out our air-con connection, he was very helpful and professional. He took the time to explain us everything and even had the kindness of cleaning our air filter, which he didn’t really have to (that is how you earn 5 stars!) I would recommend Ryan to anyone and would definitely give him a call again if I needed.
Chloe C.
Thank you to Kieran and Stu for fixing our ducted aircon, they were friendly and worked efficiently. Thanks to Louis and the rest of the team for fitting us in so quickly, highly recommend WestOz.
Regan G.
Louis was great. He was polite and professional and didn’t leave any mess. He was also very knowledgeable and educated me on how to look after the air conditioner unit in between services.
Liam T.
Had Nathan come out because of a leaking aircon and he was super helpful. Explained everything clearly, even showing me how to take care of it myself and advice for the future. Prices were good too. Cheers Nathan.
Jessica M.
Thanks so much to Dan and Bray for their help with our commercial unit. The entire team was friendly, professional and great to work with. I would definitely use WestOz Trades again and recommend them to anyone needing an excellent air conditioning service.
350+
5 star reviews

Compliant air conditioning for commercial buildings

In Perth’s demanding climate, air conditioning isn’t optional for commercial buildings — it’s essential. What matters most is a quality, tailored solution that meets your specific needs while adhering to strict National Construction Code (NCC) regulations and energy efficiency standards.

A compliant system isn’t just about meeting codes; it’s about achieving efficiency, safety, and durability. It’s the difference between a system that drives up operational costs and one that operates seamlessly through the seasons. The difference between costly breakdowns and a system designed for easy maintenance. And the difference between a company that fits and forgets… and WestOz, a team dedicated to delivering expertly installed, regulation-compliant air conditioning systems that keep your workspace comfortable, productive, and worry-free for years to come.

Why choose our air conditioning for commercial buildings?

Fully compliant

We keep your air conditioning system fully compliant with all safety and regulatory standards, giving you complete peace of mind.

Clear, honest communication

We respond quickly, honestly, and in plain English, avoiding industry jargon. With us, if you don’t need something, we’ll tell you, not sell you.

On time, every time

We understand the frustration of waiting for someone who doesn’t value your time. That’s why we’re committed to punctuality, ensuring we arrive exactly when scheduled — every time.

Tailored, optimised solutions

We’ll design an air conditioning solution that’ll fit your property like a glove, increasing efficiency and aesthetic appeal, and ultimately saving you money.

Only the best technology

We only install the very best air conditioning products. For reliability, you can’t look past high-end brands like Mitsubishi, Samsung, and Hisense.

Refrigeration mechanics, not electricians

We’re fully qualified air conditioning and refrigeration mechanics — not electricians or generalist tradies. Air conditioning is our specialty, our expertise, and our passion.

48-hour response time for issues

If you’re an AirCare member and have any issues with your air conditioning, we’ll be there within 48 hours to help, even in the peak of summer.

Our services

Air conditioning installation

We install the very best in split system, ducted, and evaporative air conditioning. Rain or shine, we’ll stay until the job’s done properly, providing an efficient custom air conditioning solution that lasts.

Air conditioning servicing and maintenance

Whether it’s ad-hoc servicing or routine maintenance, we’ll go above and beyond to ensure your system remains efficient and your air remains fresh. We’ll also talk you through what we’ve done in plain English.

Air conditioning repairs

If your system breaks down, we’re available 24/7 to repair it (we’ll be there within 48 hours if you’re an AirCare member!). The sooner you call, the sooner you can beat the heat or push back the cold. T&Cs apply.

Air balancing

Beyond our regular services, we offer expert air balancing, fine-tuning your system so air flows smoothly and evenly throughout your space. By checking ductwork, taking precise measurements, and making targeted adjustments, we make sure your indoor environment stays perfectly comfortable. And we don’t pack up until we’re certain the air is balanced exactly right.

Mitsubishi
Samsung
LG
Daikin
Fujitsu
Hitachi
Mitsubishi Electric
Sharp
Carrier
Advantage air
Brivis
Airwell
AUX
Bonaire
Gree
Braemar
Haier
Breeze air
Trane
Cell air
Coolair
jarradale
Sanyo
Coolbreeze
Teco
delonghi
Electrolux
Clarkson Development
Custom HVAC solution for Catalina development
Client
New Home Builder
Location
Catalina Estate, Mindarie
PB office
Custom oval ductwork for Plumbing Bros conference room
Client
Plumbing Bros
Location
West Leederville, WA
Mitsubishi
HVAC upgrades for Source Certain laboratory
Client
Source Certain
Location
Perth, WA

Protect your investment

We stand by our work and want to give you as much peace of mind as possible. That’s why we offer a comprehensive suite of warranties — from lifetime workmanship warranties to manufacturer’s, spare part, and refrigerant leak warranties. Terms and conditions apply.

FAQs

WestOz Trades is proudly Perth owned and operated. We service the Perth metropolitan area for all air conditioning and refrigeration requirements in the residential and commercial sectors.