Gray Bros Air Conditioning

22/10/2026

20/10/2026

Taking over a building often means inheriting its mechanical services too.

And the history isn't always straightforward:

- When was the equipment last serviced?
- Are there recurring faults that keep coming back?
- Which assets are nearing the end of their useful life?
- Are there maintenance issues that need to be prioritised?

Understanding what you've got is a good starting point for making informed decisions about what needs attention now, what can wait, and what needs planning for the future.

It helps turn a list of equipment into a clearer picture of the building's mechanical assets.

We’re here to assist if you find yourself in this situation. Contact us at https://www.graybros.com.au/commercial-air-conditioning-gray-bros

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15/10/2026

Every theatre needs great acoustics.

And every theatre needs the mechanical systems to stay quiet.

The team has completed the full mechanical fit-out of the Avalon Theatre at UQ St Lucia. A space like this required careful consideration of how the building’s mechanical systems operate without distracting from what’s happening on stage.

Airflow, temperature control and coordination of services were all important on this project. We needed to make sure:

🎭 The audience stays comfortable.
🎭 The performers don’t melt under the stage lights.
🎭 Mechanical noise stays to a minimum.

So they can get on with the show.

Find out more about our commercial HVAC services at https://www.graybros.com.au/commercial-air-conditioning-gray-bros

14/10/2026

Commercial kitchens work hard, and the ventilation behind them has a big job to do.

From extraction canopies to airflow and temperature control, we’ve worked across commercial kitchen HVAC installation, service and maintenance on many projects just like this one in SE Queensland.

Commercial kitchen fit-outs need a setup where effective ventilation is essential, for this project it included:

✓ Kitchen exhaust and extraction to remove heat, smoke, grease-laden air and cooking odours.

✓ Make-up air and ventilation to maintain airflow balance and reduce excessive heat build-up.

✓ Air conditioning and temperature control to help manage the heat generated during busy service periods.

✓ Ongoing service and maintenance to keep ventilation equipment performing efficiently and identify issues before they become bigger problems.

Get in touch to find out more about how we do this: www.graybros.com.au.

29/09/2026

The ‘before’ and ‘after’ images of a recent project at a 17-story mixed-occupancy building - comprising of hotel accommodation and privately owned apartments.

Each apartment is serviced by chilled water fan coil units incorporating electric heating elements and the base building is served by two 900 kW chillers, supplying approximately 6.7°C chilled water to the building 24 hours a day.

The Problem
Regular machine logs identified that the condenser approach was higher than expected and had been gradually increasing over time.

During annual servicing, further investigation identified significant deterioration of the condenser sacrificial anodes. The removed anodes were almost completely disintegrated, with a significant accumulation of scale, rust and debris settled within the base of the condenser tubes. The condition of the condenser indicated that water-side fouling and corrosion were contributing to the reduced heat transfer performance.

The Solution
The team carried out the repair, including:
- Mechanical cleaning and descaling of the condenser tubes
- Removal of scale, rust and debris
- Cleaning and corrosion treatment of affected components
- Replacement of sacrificial anodes
- Fabrication and installation of a new gasket
- Recommissioning and performance testing

Following the works, the chiller demonstrated improved condenser performance and operating efficiency.

The important part wasn't simply restoring the chiller, it was identifying and addressing the underlying condition before it could lead to further deterioration, increased energy consumption or unplanned downtime.

It’s a good example of why regular monitoring, planned servicing and preventative maintenance matter for critical HVAC assets.

Contact us to find out more about this case study a www.graybros.com.au.

24/09/2026

A throwback to a great project delivered by the team 👈

The mechanical scope on this one was extensive, including Mitsubishi VRV systems, outside air and dehumidification, specialist oil mist and welding fume extraction, compressed air, BMS controls and associated mechanical and electrical works.

A major focus throughout the project was the commissioning process, with detailed planning, coordination, testing and documentation required to meet the project’s BREEAM certification requirements.

It was a challenging project with a lot of different systems and interfaces to bring together, and ultimately the BREEAM certification was achieved with a strong result.

Good project to look back on and one that helped shape how we approach commissioning and project delivery today.

17/09/2026

We were back on a local rooftop this week, checking the performance of the equipment – and making sure there was no deteriorating or efficiency reduction, given it was in a coastal environment.

The team were there to identify what's changing before it becomes a problem for the building owner, and our regular check-ups optimise the performance and extend the equipment lifespan.

For building owners and facility managers, that means better visibility of the condition of the equipment - and more time to make decisions, especially with the warmer months approaching.

Find out more about how we do this at www.graybros.com.au.

11/09/2026

Our Coorparoo Colts are into another big finals battle this weekend – it’s a knockout or one win away from the Grand Final.

We’re proud to support the Coorparoo Senior Australian Football Club club and the young players who have put in the work all season.

Good luck to the team - bring it home!

08/09/2026

Down there are some of the rooftops and buildings our team currently service and maintain across the Gold Coast.

Every day, our team is working across commercial buildings and facilities to keep their mechanical systems operating reliably - from planned preventative maintenance through to urgent repairs when something goes wrong.

Our Gold Coast service and maintenance team provides:

🌊 Preventative maintenance – regular inspections and servicing to identify issues before they become breakdowns
🌊 Service & maintenance – ongoing servicing, repairs and performance checks across commercial HVAC and mechanical systems
🌊 Emergency breakdowns & repairs – responsive support when equipment fails and the building needs to get back up and running

For building owners and facility managers, this means fewer unexpected failures, better visibility of what's happening with your equipment, and systems that continue to perform when they're needed.

Find out more about our Gold Coast service and maintenance team: https://www.graybros.com.au/gold-coast-hvac-service-and-maintenance

04/09/2026

Preventative maintenance is about understanding what’s happening across the whole system on sites like this - where multiple systems and mechanical components are working together to keep a building ventilated and operating.

Our regular inspections and maintenance help identify:
- Early signs of wear and deterioration
- Equipment that may not be operating as efficiently as it should
- Components that need attention now
- Repairs and replacement that can be planned for ahead

For building owners and facility managers, that means fewer surprises, better budgeting and a clearer picture of what their mechanical systems need.

And our reporting for clients provides the information they need to plan ahead.

Find out more about how we do this by getting in touch at https://www.graybros.com.au/gold-coast-hvac-service-and-maintenance