Consumer Questions

What is HVAC Hygiene?

HVAC is the abbreviation for Heating, Ventilation and Air Conditioning. HVAC Hygiene refers to the cleaning of HVAC systems that accumulate dust & debris as well as mould and other biological growths. This is not generally part of air conditioning maintenance as it occurs in the most inaccessible areas of a system. (see 7 Reasons why you need to consider HVAC Hygiene).

consumer questions 1

What are the benefits of your services?

Improved energy efficiency, improved system effectiveness, better indoor air quality, reduced maintenance costs and extended equipment life. See 7 Reasons why you need to consider HVAC Hygiene

What are the legal implications?

The Queensland Work Health and Safety Act 2011 clearly defines the duties to ensure the health and safety of workers. This includes the management of risks, the provision and maintenance of safe plant and structures. It makes reference to the use of Codes of Practice which includes “Managing the work environment and facilities”. This sets out that a person conducting a business or undertaking has the responsibility to provide a clean safe work environment. This includes Air Quality, Temperature and any other issue that may affect a workers health or safety. There are several Australian Standards including AS/NZS 3666 (Parts 1, 2, 3 & 4), AS 1668 and AS 1851 which are used as references in this area as well as the AIRAH Best Practice Guideline on HVAC Hygiene. (see

Can you clean the entire system?

We can clean the entire system but we do need to install access panels at various points in the ductwork to allow us to use our tools in the ducts. If there is mould found in flexible ducts then it is not practical to clean them and we would recommend that we remove contaminated pieces and install new flexible duct.

How often should the system be checked or cleaned.

Air Handling Units, Coils and drain pans should be checked every month by your air conditioning service provider and cleaned when necessary. Duct work, supply air outlets, return air and relief air grilles should be inspected annually and cleaned when necessary. This is as per AS/NZS 3666.2. The minimum acceptable system hygiene standards are covered in Table 2.3 of the AIRAH Best Practice Guideline on HVAC Hygiene. This gives a visual reference for cleaning depending on which part of the system is involved.

Will there be a mess?

No, we have HEPA (High Efficiency Particulate Air) filtered vacuum machines that are certified 99.97% efficient at 0.3 microns and negative air extraction systems to remove loose particles during mechanical cleaning. Therefore all contaminants removed from the ducts are trapped and disposed of. Additional attention is paid in occupied areas with furniture and workstations covered in plastic sheets.

Can you work after hours?

The majority of our work is done after standard office hours, this is included in our quotations. We prefer after hours Monday to Friday but can work on week ends if required at an additional cost.

What do we have to do to prepare?

Very little, during our site inspection we will discuss any areas of concern. Arrangements for access and security will be arranged as you may require. We will arrange the shutdown of equipment, power and water requirements. We can discuss requirements for smoke alarm isolation.

Will there be any Chemicals used?

We do use chemicals and cleaning agents. We can supply full MSDS for these chemicals and our staff are trained and experienced in using them. The next day you may detect a slight pleasant strawberry odour. If we have treated the ductwork with Anti-microbial paint then the odours will be stronger and we generally recommend minimal occupancy and maximum ventilation for 24 hours.

How do I know that you have done the work?

We will supply a report with before and after photos showing the results of our cleaning and remediation. We will also issue a Certificate of Cleaning.

Do you have Public Liability insurance?

We carry a $20 Million Public Liability through Wesfarmers Insurance.

Is your staff capable of doing the work?

All of our staff are trained and are licensed to use the specialised equipment required. They all use the required Personal Protection Equipment, have I.D. and wear our company uniforms. Our staff will undertake any required company or site specific inductions.

Have you worked in our industry?

We have worked in an enormous variety of industries including Education, Government, Transport, Military, Pharmaceutical & Manufacturing Facilities. We have worked in Homes, Offices, Shopping Centres, Hotels and Factories. All of these areas have different issues that we have overcome. We are confident that we can adapt to any situation.