Mold may be creeping in — the Australian Refrigeration Council’s forgotten crisis and who’s to blame - Redraw

Understanding the Context

Why Mold Is Increasing in Australian Homes and Commercial Spaces

Mold thrives in warm, humid environments — conditions increasingly common across Australia due to climate shifts and tighter, more energy-efficient building designs. Overlooked causes include improper ventilation in kitchen and bathroom areas, water leaks from aging pipes, high indoor humidity levels, and delayed maintenance in refrigeration units. These conditions create ideal breeding grounds where mold spores silently multiply, often unseen for weeks or months.

The ARC has historically prioritized energy performance and refrigeration safety, but mold—while directly impacting indoor air quality and structural durability—falls into a regulatory gray area. The Council’s focus on mechanical systems overlooks the broader indoor environmental factors that accelerate mold formation, leaving a critical knowledge gap.

The Hidden Health and Economic Costs

Key Insights

Exposure to mold spores can trigger allergies, asthma, respiratory infections, and long-term health complications, especially for vulnerable populations. Beyond health impacts, mold damages building materials, reduces property values, and increases costly renovation expenses. In commercial settings, mold-related indoor air quality violations can lead to compliance penalties and loss of tenant trust.

The ARC’s current frameworks do not fully integrate mold prevention into mainstream refrigeration or building maintenance training, despite clear links between refrigeration efficiency, humidity control, and mold proliferation. This disconnect risks repeating decades of reactive rather than proactive management.

Accountability: Who’s Missing in Action?

Identifying responsibility is essential to addressing the mold crisis:

• ARCs Regulatory Role: While not a primary regulator of indoor air quality, ARC standards shape HVAC and refrigeration design — areas deeply tied to humidity control. Their reluctance to expand oversight into mold-related indoor environmental factors represents a missed opportunity for preventive leadership.

Final Thoughts

• Building Owners and Facility Managers: Often unaware of the mold-repair-prevent triad, many prioritize energy savings over moisture control, neglecting routine inspections and humidity monitoring. TheARC’s public resources could better empower them with mold prevention best practices.

• Architects and Builders: Designs that don’t account for breathable materials, proper drainage, or condensation management inadvertently fuel mold growth. ARC could push for stronger integration of moisture-resistant building codes in partnership with relevant regulators.

• Public Health Officials: Despite mounting evidence, mold-related illness remains underreported. Enhanced collaboration between HR councils, health departments, and refrigeration experts is needed to close awareness and enforcement gaps.

What Needs to Change?

Combating the creeping mold crisis demands a coordinated effort:

• The ARC should expand its technical guidance to include indoor humidity management and mold prevention strategies for refrigeration and HVAC systems.
  - Government agencies must formalize indoor air quality standards that explicitly address mold risks, particularly in energy-efficient building codes.
  - Campaigns to educate owners, builders, and facility managers about mold’s hidden dangers must become mainstream, supported by ARC expertise.
  - Research funding dedicated to mold mitigation technologies and long-term indoor environmental health will strengthen resilience.