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End-to-end mechanical services from engineering design through installation, commissioning and handover, delivered under licensed supervision and aligned to NCC and Australian Standards.
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We manage the full mechanical design and construct scope, coordinating with builders and consultants from design through completion.
In-house system design using recognised heat load calculation software, covering HVAC, ventilation, exhaust and associated mechanical systems.
Engineering-led plant selection and sizing across VRF, packaged, chilled water and condenser water systems, matched to building load and requirements.
Practical design review to identify cost-effective system solutions without compromising performance, compliance or long-term reliability.
Production of shop drawings and coordination drawings issued early to protect programme timelines and resolve clashes before construction begins.
Direct coordination across builders, consultants and specialist trades to align mechanical services with the broader project scope.
Design and installation aligned to NCC and relevant Australian Standards, verified through structured commissioning.
Design certificate issued under Queensland legislation for mechanical services works within our licensed scope, confirming design compliance.
Design certificate issued under Queensland legislation for mechanical services works, confirming design compliance at project close-out.
Complete as-built drawings, equipment schedules and commissioning records issued at handover for ongoing asset management and compliance audit.









We deliver Design & Construct mechanical services across new builds, refurbishments and commercial projects throughout SEQ. From system design to installation and certified handover, projects are delivered with structured coordination and full compliance.


Mechanical services built for operational reliability and long-term performance.






Trusted by tradespeople across South East Queensland for a reliable, professional and rewarding place to work.
“We had a fantastic experience working with Mark and the team at Chill Merchants.
They installed a large air con system in our workshop and office where several high temp machines run all day. These ducted units are big and heavy, and I wanted experienced tradesmen doing the job, and that's what we got.”

“I am writing to highly recommend Chill Merchants for any mechanical air conditioning services. As a satisfied client, we’ve had the pleasure of collaborating with Chill Merchants on several projects, and I can attest to their exceptional professionalism, expertise, and dedication to delivering top-notch results.
In all my interactions with Chill Merchants, they have consistently demonstrated a profound understanding of mechanical air conditioning systems and an unwavering commitment to providing tailored solutions that meet the unique needs of their clients. Their team of skilled technicians exhibits a remarkable level of proficiency, ensuring that every project is executed with precision and efficiency.
Their professionalism, expertise, and commitment to client satisfaction make them an invaluable partner to any project.”

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“Chill Merchants have completed a number of projects for us over the last 18 Months spanning minors works and duct work reconfiguration through to complete turn key commercial HVAC system installations.
Their communication, professionalism and trade knowledge is excellent. The transparency through the initial design and consultation process has helped to develop some great solutions to some very challenging problems. The installation team are extremely flexible, very thorough and produce high quality work. They turn up when they say they will and deal with onsite installation issues very quickly and with a minimum of fuss.
I would highly recommend Mark and the Chill Merchants Team to anyone.”

The Chill Merchants team completed all contracted works competently, efficiently, and in full accordance with project drawings and specifications.
Communication was clear, site coordination was smooth, and their commitment to meeting program deadlines was evident throughout the build. Chill Merchants' professionalism and reliability contributed to a seamless delivery, and Bryant will actively seek their services for future projects.
Expert advice and compliance updates for commercial HVAC systems across South East Queensland.

Common questions about working with Chill Merchants across Brisbane and South East Queensland.
Design & Construct means taking responsibility for both the engineering and the delivery of the mechanical system.
Rather than installing from a fully documented consultant design, we develop the HVAC solution in-house, including system selection, heat load calculations, ventilation strategy, plant sizing, drafting, and compliance alignment with the National Construction Code and relevant Australian Standards.
One of the major advantages of D&C is efficiency. Working directly with the mechanical contractor often produces more cost-effective and practical solutions, as design decisions are informed by installation experience. This can reduce overdesign, avoid unnecessary plant sizing, and streamline programme delivery.
A potential disadvantage is that like-for-like tender comparisons can be difficult, as different contractors may propose different system designs or plant selections. This makes transparency and documentation critical.
True D&C means owning both the design intent and the installation outcome.
Correct system sizing begins with accurate heat load calculations.
We use recognised Australian industry software such as Camel Heat Load to assess cooling and heating demand based on occupancy, building envelope, ventilation requirements, and internal loads.
From there, we select appropriate plant — whether VRF systems, packaged units, chilled water systems, condenser water systems, or hybrid configurations — depending on the building scale and operational requirements.
Oversizing leads to short cycling and reduced equipment life. Undersizing results in performance complaints and operational strain.
Engineering-led sizing ensures the system performs efficiently and reliably over its intended service life.
D&C projects require structured documentation to support compliance and construction delivery.
This typically includes:
Where required under Queensland legislation, Form 15 (design certificate) and Form 12 (inspection certificate) certification may be issued for mechanical services works.
Clear documentation supports compliance, programme control, and long-term asset management.
Successful D&C delivery relies on early and ongoing coordination.
We work closely with builders, project managers, architects, and other consultants to ensure mechanical systems align with structural supports, roof loading, plant locations, electrical capacity, fire services interfaces, and hydraulic services.
Shop drawing coordination is a critical stage. Early identification of clashes protects programme timelines and avoids costly redesign during construction.
D&C projects are delivered under structured supervision and project management, with defined accountability from design through to commissioning.
Design & Construct mechanical services work in Queensland requires appropriate QBCC Mechanical contractor licensing where works exceed regulated thresholds.
Chill Merchants currently operates under a limited mechanical design licence and delivers design responsibility within those scope limits. For larger or more complex projects, we collaborate with qualified mechanical engineering consultants to ensure design compliance and appropriate certification pathways.
Electrical works are delivered under licensed Electrical Contractor authority, and refrigerant handling is performed by ARCtick licensed technicians.
Design responsibility carries legal accountability. Proper licensing, structured engineering oversight, and compliance alignment are fundamental to delivering D&C projects lawfully and professionally.
If you have any questions about our services, please don’t hesitate to reach out.
We’re always happy to help!
