Air-Conditioning Service & Maintenace Pty Ltd – Keysborough VIC
ACSM Air
is seeking an experienced and motivated
HVAC-R Service Technician or Subcontractor
to join our team based in Keysborough, VIC.
Due to continued business growth, a strong project pipeline and increasing demand for our services, opportunities are available on either a full-time or subcontractor basis. The role is focused on the servicing, maintenance, fault finding, commissioning and optimisation of DX air conditioning systems across a diverse range of commercial, industrial and high-end residential projects throughout Melbourne.
ACSM Air is a Melbourne-based mechanical services organisation specialising in the design, installation, commissioning and maintenance of air conditioning systems. We work with builders, developers, government departments, retailers and end users, delivering technically sound solutions across a broad range of project types.
This position offers genuine variety, from commissioning and performance verification of newly completed systems through to preventative maintenance, fault diagnosis and breakdown service work. You will gain exposure to a wide range of equipment, applications and environments, allowing you to continually broaden your technical capabilities.
The successful candidate will also play an important role in mentoring apprentices and helping develop the next generation of HVAC technicians. We are passionate about training and development and value technicians who enjoy sharing their knowledge and contributing to a positive team culture.
Key Responsibilities
Carrying out planned preventative maintenance, repairs and breakdown service work on commercial DX air conditioning systems
Diagnosing electrical, mechanical and refrigeration faults using diagnostic tools and manufacturer resources




Commissioning new air conditioning systems and verifying performance against design specifications
Testing, adjusting and optimising system operation to ensure energy efficiency and occupant comfort
Completing refrigerant handling activities in accordance with industry regulations and environmental requirements
Preparing detailed service reports, commissioning documentation and defect reports using Simpro
Liaising professionally with clients, builders, facility managers and project stakeholders
Assisting with warranty investigations and technical troubleshooting
Supervising and mentoring apprentices, sharing technical knowledge and supporting their professional development
Maintaining high standards of safety, workmanship and customer service at all times
About You
Qualified Refrigeration and Air Conditioning Mechanic with relevant trade qualifications
Demonstrated experience servicing and commissioning commercial and domestic air conditioning systems
Strong fault-finding and diagnostic skills across DX systems and associated controls
Ability to read and interpret technical drawings, schematics and commissioning documentation
Solid understanding of HVAC industry standards, regulations and safe work practices
Excellent communication and customer service skills
Ability to work independently while contributing positively to a team environment
A professional, solutions-focused approach to problem solving




A willingness to mentor apprentices and contribute to the development of junior team members
Current Victorian Driver's Licence
White Card and relevant industry tickets highly regarded
Dual cab company vehicle and mobile phone provided
Competitive negotiated hourly rate based on experience and capability
12 scheduled RDOs per year
Team-focused and supportive working environment
Fully paperless reporting system using Simpro
Ongoing manufacturer and industry training opportunities
Exposure to a broad range of commercial HVAC projects and technologies
A genuine career pathway into senior technical and supervisory roles
A company culture that values learning, development and continuous improvement
Opportunity to work alongside highly experienced industry professionals
About Us
ACSM Air is a respected provider of mechanical services across Victoria. We are a growing family business of 16 people specialising in the design, installation, commissioning and servicing of domestic and commercial air conditioning systems, and have been operating for over 10 years.
Our clients include organisations such as the Victorian Magistrates' Court, Bupa, the Department of Education, Salvation Army, Pandora, the Australian Taxation Office, Westpac and CBA, along with a range of builders, developers, retailers, architects, government departments and councils, as well as high-end residential homes.
We have built our reputation on professionalism, reliability, technical expertise and strong client relationships. We are equally committed to investing in our people. Many of our team members commenced their careers with us as apprentices and have progressed into long-term trade positions. We actively promote ongoing learning and development at every level and believe great technicians never stop learning.
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📌 Hvac-R Service Technician | Full-Time & Subcontractor Opportunities (Melbourne)
🏢 Air-Conditioning Service & Maintenace
📍 Melbourne