

.avif)
.avif)
.avif)

.avif)



Design and installation of compliant commercial ventilation systems for new builds, refurbishments and AS 1668 upgrades, delivered under licensed mechanical supervision.
.avif)
We design and upgrade ventilation systems to meet occupancy loads, regulatory obligations and indoor air quality standards.
Design and installation of outside air intakes, ducting and distribution to meet minimum occupancy-based ventilation rates under AS 1668.
Engineered mechanical ventilation systems for toilets, carparks, plant rooms and occupied spaces requiring controlled exhaust and supply air.
Supply air systems designed to balance exhaust requirements, maintain building pressure and support compliant ventilation.
Ventilation systems engineered for high-occupancy, sensitive environments where indoor air quality directly impacts health, comfort and compliance.
Assessment and upgrade of ventilation infrastructure to meet current standards, including outside air volumes, exhaust performance and discharge locations.
Sensor-based ventilation control systems that adjust fresh air in response to occupancy, reducing energy consumption while maintaining indoor air quality.






We install commercial ventilation systems across live facilities, education, healthcare and construction projects throughout SEQ. From single-area fresh air upgrades to full-building compliance programs, works are delivered safely with minimal disruption.


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.”

“Chill Merchants were engaged by Bryant Building Contractors to deliver the mechanical services package at Bryant’s recently completed, Energy Quuensland Esitrain Redevelopment project and performed strongly from pre-tender until completion.
Their 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 Merchant’s professionalism and reliability contributed to a seamless delivery, and Bryant will actively seek their services for future project.”


“As a commercial builder, we have engaged Chill Merchants to deliver mechanical services on several projects, ranging from straightforward HVAC installations to design-and-construct mechanical works. In each case, their team has been highly professional and easy to work with, integrating smoothly with our site operations and schedules.
Communication with Chill Merchants is excellent. They keep our project team well-informed and provide honest, practical advice at every stage. This candid guidance has helped us make informed decisions without any unwelcome surprises. We’ve found them reliable, proactive in solving issues, and committed to doing the job right the first time.
Based on our experience, we confidently recommend Chill Merchants for commercial mechanical services. Their straightforward, collaborative approach and integrity make them a valuable partner on any construction project. We would not hesitate to work with them again in the future.”

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.
Ventilation starts with a simple question — how many people are using the space, and how much freshair do they need?
Every occupied building requires a controlled amount of outside air. Without it, you’re simply recirculating stale air, carbon dioxide, and internal pollutants through the air- conditioning system. Australian Standards such as AS 1668 set minimumoutside air requirements based on occupancy and building use to protect indoor air quality and health.
Designing a compliant system involves calculating required airflow, assessing how the building is constructed, reviewing natural air paths, and ensuring toilet, kitchen, and other exhaust systems discharge properly to the outside, not back into the building.
Ventilation systems often interact with fire systems, pressure balancing, and overall HVAC performance. A compliant installation ensures freshair is introduced correctly, contaminated air is removed properly, and the system is engineered, licensed, and commissioned in accordance with NCC requirements.
AS 1668 isn’t just a design guideline, it protects people.
It governs how much outside air must be introduced, how exhaust systems must perform, and where air must be discharged. Without compliance, indoor air can quickly become stale, uncomfortable, or unhealthy.
Toilet exhaust must remove odours and contaminants without recirculating them. Kitchen exhaust must safely discharge grease-laden air outside the building. Fresh air must dilute carbon dioxide and internal pollutants so occupants aren’t simply breathing recycled air all day.
Compliance also protects building owners from regulatory and council exposure. Ventilation is a health and safety issue, not just a comfort feature.
We begin by reviewing occupancy numbers, tenancy type, and how the building is actually being used.
Required outside air volumes are calculated under AS 1668. We then assess intake locations, duct sizing, fan capacity, and airflow balancing to determine whether the system is delivering what it should.
Outside air also impacts theair-conditioning system. In Southeast Queensland, fresh air brings heat and humidity that must be cooled and dehumidified. If outside air is increased without reviewing system capacity, comfort issues can occur.
Ventilation and air-conditioning must be engineered together, not treated as separate systems.
Yes, and it depends on how they’re engineered.
Introducing more outside air improves indoor air quality but increases heating and cooling load. That additional air must be conditioned, which can increase energy demand if the system is not sized or controlled correctly.
However, well-designed ventilation systems can also improve efficiency. In cooler months, outside air can reduce mechanical cooling demand. Energy recovery systems and improved control logic can also balance fresh air requirements with energy performance.
The key is proper engineering, achieving compliant ventilation without creating unnecessary load on the system.
Ventilation installation in commercial buildings is regulated mechanical services work in Queensland.
Where works exceed minor value thresholds or involve duct installation, roof penetrations, mechanical plant, or integration with fire systems, an appropriately licensed QBCC Mechanical contractor is required. Electrical components must be installed by a licensed Electrical Contractor.
Chill Merchants holds the required mechanical, electrical, and refrigeration licences to deliver ventilation projects compliantly. Works are carried out under qualified supervision to ensure alignment with NCC and Australian Standards.
If you have any questions about our services, please don’t hesitate to reach out.
We’re always happy to help!
