The HVAC system in my workplace was shut down during Covid-19 restrictions. What Are the health risks to health once restarted?

HVAC systems that have been shut down temporarily should be correctly maintained and inspected by CFM Air Conditioning technicians in-line with the building HVAC regulations and standards.

Cooling towers and condenser water systems can build up corrosion, water can become stagnant, bacteria can grow and indoor air quality compromised.

It is important offices and building managers ensure HVAC systems are serviced prior to restarting.

REF: Safe Work Australia