14/04/2026
Understanding Ventilation in Bathrooms & Laundries
Ventilation plays a critical role in removing moisture, preventing mould, and maintaining healthy indoor air quality, especially in high-humidity areas like bathrooms and laundries.
We were recently called to inspect a system that wasn’t performing well. While many would assume the exhaust fan had failed, the issue was something far more common.
What we found:
• The exhaust fan was operating correctly and within specification
• Grilles were heavily clogged with dust and debris, restricting airflow
• Ductwork was partially blocked, reducing the system’s ability to extract air
Why this matters:
Even if your fan is working, blocked grilles and ducting can significantly reduce airflow. This leads to poor moisture removal, which can result in condensation, mould growth, and long-term damage to walls, ceilings, and fixtures.
What we did:
• Removed and cleaned all grilles
• Cleared the ductwork to restore airflow
• Tested the system to confirm improved performance
The outcome:
A properly functioning ventilation system with improved airflow and efficiency, without the need for unnecessary replacements.
Key takeaway:
Ventilation issues are often caused by lack of maintenance, not equipment failure. Regular cleaning of grilles and periodic inspection of ductwork can keep your system performing as intended.
If your bathroom or laundry isn’t ventilating properly, it may not need replacing, it may just need the right attention.