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Speak to the people who can handle your hygiene needs

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To get in touch directly
Hotline to get in touch
+61 (08) 9361 2722
Perth Office
3/41 Tate Street
Bentley WA 6102
Postal Address
PO Box 84
Victoria Park WA 6979


We have collated some of the most frequently asked questions to assist you.

What are the signs of a dirty HVAC or poor ventilation in a building?

Signs of a dirty HVAC or poor ventilation in a building may include stale or musty odours, uneven temperature distribution, excessive dust accumulation, mould or mildew growth, and increased allergy or respiratory symptoms.

How frequently should HVAC systems be inspected for mould issues?

HVAC systems should be inspected for mould issues at least once a year, or more frequently in high humidity or moisture-prone areas.

What are the health risks associated with mould in ventilation systems?

Mould in ventilation systems can contribute to respiratory issues, allergies, asthma attacks, and other health problems. It can also worsen existing conditions.

How can mould growth in HVAC systems be prevented, and what are the methods?

To prevent mould growth in HVAC systems, regular maintenance and cleaning are essential. Proper ventilation and humidity control should be maintained, and any water leaks or moisture issues should be promptly addressed. Using mould-resistant materials in HVAC components can also help prevent mould growth.

How can the hygiene of a ventilation system be assessed?

The hygiene of a ventilation system can be assessed through various methods. Visual inspection for dirt, dust, or mould growth is one approach. Air quality testing can also be conducted to identify pollutants or contaminants. Checking for proper airflow and temperature control is another way to assess ventilation system hygiene.

What are the significant advantages of regular air duct cleaning for building hygiene?

Regular air duct cleaning offers significant advantages for building hygiene. It reduces the risk of mould growth and associated health issues. Improved indoor air quality benefits occupants, and enhanced energy efficiency of HVAC systems can lead to cost savings. Regular air duct cleaning also helps to prolong the lifespan of HVAC equipment.

Which specific types of buildings are more prone to HVAC hygiene issues?

All buildings are vulnerable, however older buildings with outdated ventilation systems, buildings located in humid or moisture-prone areas, and buildings with poor maintenance practices are more prone to HVAC hygiene issues.

What are the consequences for businesses of neglecting HVAC hygiene, including the impact on energy efficiency and ventilation issues?

Neglecting HVAC hygiene can have several consequences for businesses. It can result in increased energy consumption and higher utility costs. Poor ventilation due to neglect can lead to reduced comfort for occupants. Neglected HVAC systems are also at a higher risk of mould growth, which can cause health issues. Additionally, neglecting HVAC hygiene can result in potential damage to HVAC equipment, leading to expensive repairs or replacements. The Department of Mines OSH Act 1984: Duty of the Person in Control.

Is mould removal from HVAC systems a task that can be done as a DIY project?

Definitely not. Mould removal from HVAC systems is not recommended as a DIY project. It should be conducted by professionals with the necessary expertise and equipment who understand mould in the built environment and are trained in mould remediation and containtment, including HVAC, which ensures thorough and safe remediation.

How does proper ventilation contribute to indoor air quality and a healthier indoor environment?

Proper ventilation plays a crucial role in maintaining good indoor air quality and creating a healthier indoor environment. It helps to remove pollutants, allergens, and moisture from indoor spaces, such as commercial buildings, healthcare facilities or residential properties, reducing the risk of respiratory issues and creating a more comfortable living or working environment.

What measures should be taken to prevent mould growth in AC units?

To prevent mould growth in AC systems, regular cleaning and maintenance are essential. Ensuring proper drainage and humidity control is important, as well as promptly addressing any water leaks or condensation issues.

What are the warning signs that indicate the presence of mould and the need for remediation?

Warning signs that indicate the presence of mould and the need for remediation include visible mould growth, musty or earthy odours, water damage or discolouration, visual dirt/dust on supply grills, dirty coils or filters and worsening allergy or respiratory symptoms indoors.

How does our company, HBS, handle ventilation system cleaning in large commercial buildings?

Our company, HBS, specialises in comprehensive ventilation system cleaning for large commercial buildings and many other types of facilities. Our experienced team uses state-of-the-art equipment and industry-approved techniques to ensure thorough cleaning and improved indoor air quality. HBS has the expertise in dealing with mould and IAQ within the built environment.

Can mould in ventilation systems affect the heating and cooling performance of HVAC systems?

Yes, mould in ventilation systems can restrict airflow and reduce the heating and cooling performance of HVAC systems. Bio film build up on coils and contaminated filters can lead to inefficient operation and increased energy consumption.

What role does humidity play in mould growth in HVAC systems?

High humidity levels contribute to mould growth in HVAC systems. Moisture provides the ideal environment for mould spores to thrive and spread throughout the system. Mould is an opportunistic organism that we need to learn to manage.

Which specific cleaning products or techniques do you recommend for HVAC hygiene, including information on surface-guard and vapour-guard products?

For HVAC hygiene, we recommend using professional-grade cleaning products and techniques specifically formulated for this purpose. Our services include the use of Surface-guard and Vapour-guard products, which inhibit mould growth and help maintain cleanliness.

How can we achieve a healthier indoor environment through our building hygiene services, mould remediation, Indoor Air Quality solutions and soft/hard floor maintenance?

Our comprehensive range of building hygiene services, including mould remediation, Indoor Air Quality solutions, and soft/hard floor maintenance, is designed to create a healthier indoor environment. We prioritise cleanliness, air quality, and the well-being of occupants in every aspect of our services. Healthy Building Systems (HBS) can provide a comprehensive company approach - not sub-contracted.