The unit's original forward-curved belt-driven fans were underperforming and driving up energy costs, while both coils had reached the end of their effective service life. Corrosion within the casing was an ongoing concern, and the filter bulkhead and filters were overdue for renewal — a critical issue for a building where indoor air quality directly affects staff wellbeing. The office needed a comprehensive refurbishment that tackled all of these issues in one coordinated project, minimising disruption to a fully occupied building.

We removed the existing fans and installed a new EC fan wall, delivering quieter, more energy-efficient operation across the system.

Both coils were removed and replaced, restoring the unit's cooling and heating performance to full capacity.

All corrosion was removed and treated throughout the unit, and the door hatches were replaced to ensure a secure, long-lasting seal.

The filter bulkhead and filters were replaced to restore optimal filtration, directly improving the air quality being delivered throughout the building.

The building now has a fully refurbished AHU delivering improved air quality, better energy efficiency, and reliable long-term performance. Staff throughout the office benefit from cleaner air, while the building's management has a system that's been brought fully up to standard without the cost of replacement.