ACSM Air is seeking an experienced HVAC Service Technician or Subcontractor to join our team based in Keysborough, VIC.

ACSM Air is a Melbourne-based mechanical services family business specialising in the design, installation, commissioning and maintenance of air conditioning systems. We work across commercial, industrial and residential sectors for builders, developers, government departments, retailers and end users, delivering technically sound solutions across a broad range of project types.

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.

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
- Strong 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.

If you're looking for a role where your technical skills are valued, your professional development is supported, and you can genuinely contribute to the growth of a high-performing team, we'd love to hear from you.

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📌 HVAC Service Technician | Full-Time & Subcontractor Opportunities (Melbourne)
🏢 Air-Conditioning Service & Maintenace
📍 Melbourne