Clean-Air in Action: Deep Clean of the Building’s AHUs

Clean-Air in Action: Elizabeth Street, Brisbane
Job Completed: AHU, Fan, Coil & Duct Cleaning
Building Type: High-rise Commercial Offices

This project focused on a deep clean of the building’s air handling units — the heart of the HVAC system. By restoring the AHUs, along with associated fans, coils, and ductwork, we improved both efficiency and indoor air quality for the tenants.

The scope

  • Deep cleaning of evaporator coils with Hi-Foam cleaner and high-pressure water, followed by condensate tray sanitisation.
  • Supply air fans cleaned and sanitised, including casings, belt guards and flexible connections, with wastewater safely removed by industrial vacuuming.
  • Internal AHU surfaces disinfected and treated with Aeris surface coating to help prevent microbial growth for up to 12 months.
  • Coils coated with Aeris treatment to resist bio-film and maintain long-term efficiency.
  • Rust removed from AHU bases and external surfaces, treated and recoated with Cold Galv for lasting protection.
  • Detailed audit report supplied with before-and-after photos.
  • Compliance certificate issued in accordance with the WH&Safety Act 2011 and Australian Standard 3666.2:2011.
AHU before after 1
AHU before after 2

ABOVE Heavy contamination on AHU fans. Credit: Clean-Air Photo Archive © 2025

AHU before after 3
AHU before after 4

ABOVE Heavy contamination on AHU fans. Credit: Clean-Air Photo Archive © 2025

The Result

The AHUs were returned to a clean, protected, and high-performing condition. The system is now optimised for healthier indoor environments, the client pleased with the quality of workmanship and the professional outcome delivered by Clean-Air.

Looking for HVAC AHU, Coil, Fan and Duct Cleaning? Clean-Air Australia provides expert solutions in indoor air quality improvements for commercial and industrial buildings.

📞 Contact us today to discuss your project.