Systems Built
to Perform.
Treadies HVAC & R designs, installs, and maintains high-performance mechanical systems for Australia's most demanding commercial, industrial, and marine environments — from Perth to Sydney and beyond.
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Australia's mechanical services specialists — trade expertise meets engineering intelligence.
Treadies HVAC & R is a fully licensed and insured Australian mechanical services company operating from Perth, WA and Surry Hills, NSW. We deliver end-to-end solutions across commercial, industrial, healthcare, marine, and government sectors — from design and installation through to long-term maintenance and compliance.
We were built from the ground up by tradespeople who understood that the industry needed companies willing to take genuine ownership — not just show up and invoice. Every job we take on is backed by the full weight of our team's qualifications, our systems, and our commitment to getting it right.
Through our Air Theory consulting brand, we extend into high-performance building design — passive house mechanical systems, HRV/ERV ventilation, dehumidification, and low-energy HVAC strategy for architects, developers, and sustainability-focused clients.
We design and deliver mechanical systems for complex buildings across Australia — backed by trade expertise, engineering intelligence, and a team that takes full ownership of every job.
Jacob Treadwell — Director, Treadies HVAC & RTreadies HVAC & R — Commercial and industrial mechanical services. Installation, maintenance, reactive response, marine. Broad market delivery backed by trade credentials and management systems.
Air Theory — Premium mechanical consulting. Passive house design, high-performance HVAC, sustainability engineering for architects, developers, and design-conscious clients.
A complete mechanical services capability — under one roof.
From a single reactive repair to a full design-and-construct mechanical package, we have the people, the licences, and the systems to deliver.
What we're delivering right now.
Our current service and maintenance programme spans commercial, healthcare, industrial, marine, and government clients across Western Australia and New South Wales.
- Preventative maintenance of ducted systems across multi-site portfolios
- FCU and AHU servicing — coil cleaning, fan cleaning, filter replacement
- Condenser and evaporator cleaning for system efficiency
- Electrical servicing including switchboards, contactors, and control systems
- Motor, bearing, and sensor replacement
- HVAC control system upgrades including Carel platform integration
- Refrigeration leak detection and performance testing
- Condensate drainage installation and maintenance
- Plant inspections, fault finding, and compliance reporting
- Reactive breakdown response and emergency repairs
- HVAC plant refurbishment and upgrade projects
- Air box and plenum redesign and structural strengthening
- Shell and tube condenser cleaning and inspection
- Compressor electrical component replacement
- Control system modernisation and data integration
- Bearing replacement and lubrication system installation
- Mechanical refurbishment and preventative maintenance strategies
- Minor plant upgrades and capital works delivery
Trusted by organisations across Australia's most demanding sectors.
What makes the difference on every job.
The team behind the work.
Our structure is flat enough to be responsive and deep enough to be capable. Every client has a clear point of contact, and every job has the right person on it.
Built for complexity. Proven across sectors.
Our team has delivered across some of Australia's most demanding environments — from remote mining camps to hospital clean rooms, naval vessels to passive house builds.
Mulla Mulla Camp upgrade (500 to 3,500-man BHP camp); COVID Quarantine Camp Bullsbrook WA; medical and clean room fit-outs.
Ongoing HVAC and refrigeration maintenance for Rottnest Express fleet including screw compressor replacement. SeaLink operations support.
Active maintenance at Royal Perth Hospital and St John of God Hospital. Clean room design and commissioning experience.
Energy intelligence built into every programme.
We integrate energy management into our maintenance programmes as standard — identifying saving opportunities proactively, not as an afterthought.
Ready to talk about your next project or maintenance programme?
We keep things simple — reach out directly and we'll respond fast. No sales process, no runaround.