Nihon University Newcastle Campus

The Project: Full HVAC & Mechanical Fit-out Location: The Hill, Newcastle (Old Courthouse Site) Equipment: Mitsubishi Electric City Multi HVRF (Hybrid VRF)

The Job

When you turn a heritage-listed courthouse into a modern university campus, you can’t just slap condenser units on the wall.

Nihon University’s Newcastle campus is a mix of restored history and brand-new architecture. They needed a climate control system that could handle the heat of a Newcastle summer, manage the fresh air requirements for hundreds of students, and remain completely invisible to respect the building’s aesthetics.

We were brought in to handle the lot: design, construct, and commissioning of the air conditioning, mechanical ventilation, and building management controls.

The Challenge: “Invisible” Comfort

The architects had a clear vision: the buildings needed to look pristine. No ugly bulkheads, no exposed pipework, and absolutely no noise in the student accommodation quarters.

Working on “The Hill” also means dealing with heritage restrictions. We had to route complex ductwork and pipe runs through tight ceiling spaces and structural voids without altering the historic fabric of the original courthouse.

The Solution: Hybrid VRF Technology

We installed Mitsubishi Electric’s City Multi HVRF (Hybrid VRF) system.

This is smart tech. Unlike standard VRF systems that pump refrigerant gas all the way to the indoor units (which can be a safety risk in sleeping quarters), HVRF uses refrigerant only between the outdoor unit and a branch controller. From there, it uses water to cool the indoor units in the rooms.

The result?

• Safety: No high-pressure refrigerant in student dorms.
• Comfort: Mild off-coil temperatures (no cold drafts).
• Efficiency: Massive energy savings compared to traditional chillers.

We also installed a centralised computer monitoring system. This lets the facilities manager see exactly what every unit is doing, adjust schedules, and spot faults before the students even notice.

The Outcome

The system is now fully operational. The students have quiet, reliable cooling in their rooms, the heritage facade remains untouched, and the university has a low-energy system that will last for decades.

Got a complex commercial project? We don’t mind the tricky ones. Whether it’s heritage, industrial, or large-scale commercial, we’ve got the team to handle it.

Call Coles Refrigeration on (02) 4957 0221.