our story.

Le Gassick HVAC & Mechanical Services stands at the forefront of HVAC and mechanical solutions, delivering excellence, innovation, and performance across residential, commercial, and industrial sectors. We are trusted to tackle the most complex, high-stakes projects, consistently exceeding expectations and setting the benchmark for quality, efficiency, and reliability in the industry.

Under the visionary leadership of Kelley Le Gassick, our director, Le Gassick combines strategic insight with unmatched technical expertise. Kelley’s guidance ensures that every project — no matter the size or complexity — is executed flawlessly, on time, and on budget, delivering systems that are high-performing, sustainable, and engineered to stand the test of time.

Our team of specialists brings together deep industry knowledge, cutting-edge technology, and meticulous attention to detail. From initial consultation and design through to installation, commissioning, and ongoing service, we maintain the highest standards of professionalism and operational excellence, transforming challenges into streamlined, high-performance solutions.

At Le Gassick, we do more than deliver projects — we create lasting partnerships. Every engagement is tailored to the unique needs of our clients, with a focus on innovation, efficiency, and measurable results. Our relentless commitment to excellence, precision, and reliability has earned us a reputation as an industry leader, trusted by clients to deliver outcomes that not only meet but redefine expectations.

With Le Gassick, clients gain more than a service provider — they gain a dedicated partner capable of transforming the most complex HVAC and mechanical challenges into efficient, high-performance systems that deliver long-term value, confidence, and exceptional results every time.

our team.

Our team, led by Kelley & Jack, bring extensive industry experience and hands-on expertise in refrigeration, air conditioning, and mechanical services. Their leadership sets the standard for quality workmanship, technical excellence, and strong project oversight across all areas of the business.

Our expert team of qualified tradesmen and refrigeration mechanics are highly skilled, fully licensed, and experienced across a broad range of commercial and industrial systems.

We take pride in maintaining a workforce that is professional, safety-focused, and solutions-driven. Ongoing training and exposure to evolving technologies ensure our team remains up to date with industry standards, energy-efficient systems, and compliance requirements.

To ensure we can meet the full scope of our clients’ needs, we are also supported by a trusted network of experienced subcontractors and specialist trades. This allows us to scale efficiently and deliver multi-trade solutions while maintaining consistent quality control under the direction of Kelley and Jack.

Together, our leadership team, skilled tradesmen, and dedicated office support team enable us to provide dependable, end-to-end mechanical services tailored to each client and project.

  • kelley le gassick

    Director / Project Manager

    With over fourteen years in the HVAC industry, Kelley Le Gassick is a proven leader and innovator, renowned for delivering high-performance, reliable, and tailored HVAC solutions. He co-founded MK Air, transforming it from a small startup into a thriving business with a reputation for excellence, innovation, and client satisfaction.

    Building on this success, Kelley established Le Gassick HVAC & Mechanical Services to set a new standard in the industry. Hands-on and strategic, he oversees every project from design to commissioning and ongoing maintenance, ensuring precision, efficiency, and exceptional outcomes. Under his leadership, Le Gassick is a powerhouse of expertise, teamwork, and innovation — consistently exceeding client expectations and delivering systems built to last.

  • jack le gassick

    Director / Project Manager

    With over 20 years of industry experience, Jack Le Gassick brings deep technical expertise and strong leadership to the Service and Small Projects division at Le Gassick. A fully qualified refrigeration mechanic, he built his career with leading firms before co-founding and growing his own HVAC business into a trusted provider across residential, commercial, and specialised facilities.

    Jack’s focus on building performance, energy efficiency, and preventative maintenance ensures clients benefit from reliable, sustainable systems that perform throughout their lifecycle. His commitment to quality, client value, and long-term partnerships continues to strengthen Le Gassick’s reputation for professionalism and reliability across Melbourne and regional Victoria.

  • ammaniar durai

    Chief Finance Officer

    As Chief Finance Officer at Le Gassick, Ammani brings over two decades of experience across Information Systems, Consulting and Finance. With a strong foundation in systems, process optimisation and strategic financial management, she plays a critical role in strengthening the operational and financial framework of the business.

    Ammani has a natural aptitude for structure, numbers and building scalable systems that support sustainable growth. Her global professional experience has shaped a broad commercial perspective and a disciplined, solutions-focused approach to leadership. Whether guiding financial strategy, refining internal processes or supporting long-term planning, she ensures the business operates with clarity, accountability and efficiency.

    Outside of her professional role, Ammani balances her leadership responsibilities with raising four children (five, including her husband!) a role that reflects her resilience, organisation and unwavering commitment to those around her.

  • nicole klaproth

    Administrative Assistant

    With a background in real estate administration and project coordination for a residential builder, Nicole brings strong organisational skills and a deep understanding of construction processes to her role at Le Gassick.

    She supports the team across scheduling, documentation and client communication, helping ensure projects run smoothly from start to finish.

    Known for her attention to detail and approachable nature, Nicole plays a key role in keeping operations efficient and clients informed every step of the way.