Ozone Disinfection for Indoor Environments and HVAC Systems

Under control of a qualified Clean-Air HVAC Hygiene technician Ozone (O³) can be utilised safely as an effective germicidal treatment on a wide spectrum of microorganisms. Diffusing high concentrations of Ozone gas into an enclosed space kills bacteria, mould and fungi.

Our Ozone disinfection methods sterilise surfaces and neutralise airborne particles including mould spores, fungi, and bacteria, targeting them by destroying their cell membranes, surface proteins, receptors and nucleic acids.

Ozone Disinfection
How it works

We use specialist Ozone generators which can produce high concentrations of Ozone (O³) gas within an enclosed space. When the Ozone gas reaches a specific concentration for a specific exposure period it kills bacteria, mould spores and fungi, and damages the cell wall and protein spikes of viruses neutralising them on all surfaces, all objects, all equipment and most importantly any micro-particles floating in the air and inside air ducts or air filters.

During the Ozone Disinfection cycle, Ozone gas fills the enclosed area quickly and the third atomic particle attaches to bacteria, mould, fungi, viruses and other organic matter on surfaces, objects, fabrics or micro particles floating in the air.

This oxidisation process eliminates the third Oxygen atom that exists in Ozone (O³). What is left behind is a totally disinfected area where the only residue is clean fresh (O²) Oxygen.

The advanced settings used on our Ozone generators ensure that only the prescribed concentration of Ozone is achieved and maintained, in order to guarantee the best possible disinfecting result.

The outcome is a completely disinfected space that smells fresh and clean for your building and occupants, ensuring a safe standard of Indoor Air Quality.

Regular oxygen molecules (O2) are made up of two oxygen atoms stuck together. These molecules are plentiful in the atmosphere. UV rays from the sun shoot in from space and split such molecules into two separate oxygen atoms. One of those stray oxygen atoms attaches itself to an intact O2 molecule, and forms an O3 molecule, referred to as an Ozone molecule.

Ozone Compared to
UV Light and Chemicals


  • 50 times more effective at disinfection compared to chemical treatments
  • Works 3,000 times faster than chemicals i.e. chlorine
  • Kills bacteria, neutralises viruses, mould spores, fungi and many species of protozoa
  • Works faster and more efficiently than traditional surface cleaning. It covers every surface without missing anything, and does not require wiping down at the end of the cycle
  • Covers spaces not normally accessible, including air con ducting / HVAC systems, because it is a gas
  • Disinfects carpets, soft furnishings, fabrics as well as any hard surfaces
  • Removes bad odours from the air leaving only a clean fresh oxygen, restoring Indoor Air Quality
  • Reverts back to oxygen when the cleaning process is completed – no messy cloths, chemical sprays, toxic residue, or plastic waste – ecofriendly and environmentally friendly


  • Treatment of various kinds of surfaces and objects Less effective on porous materials (i.e. textiles)
  • Treatment of ambient air
  • Treatment of water
  • Target: cell membrane/ envelope virus (ROS, lipid peroxidation), surface proteins/ receptors (oxidation of amino acids), nucleic acids (ROS)
  • Inexpensive and fairly quick
  • Prolonged exposure to high concentrations, >0.1 ppm (0.2 mg/m3) on a 8-h/day, is potentially toxic for humans and animals


  • Treatment of various kinds of surfaces and objects (incl. clothes and textiles)
  • It can be expensive and takes more time
  • Target: nucleic acids (DNA, RNA) It does not reach every corner of the environment

For more information on Germicidal UV-C click here



  • Generally leaves residue
  • Very effective on surfaces, not all objects can be treated directly
  • Target: cell membrane/enveloped virus, surface proteins/receptors, nucleic acids

For more information on Ozone Disinfection, Germicidal UVC or other Indoor Air Quality Solutions, speak to our expert team today

Start the conversation
Talk with a Clean-Air IEP

For expert HVAC Hygiene advice and services, talk with a Clean-Air® IEP today. Call our team on 07 3274 2833 or email sales@cleanairaust.com.au for info.

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