The simplest way to improve your indoor air quality by killing the mold, bacteria and viruses that grow in your air-conditioning system.

What is Gelair?

gelair A patented system, using a specially formulated gel matrix that is placed in an air handling unit (AHU), where it releases specific concentrations of top quality Australian tea tree oil vapour throughout the air-conditioning system. Tea tree oil (a 100% natural essential oil) is a broad spectrum anti-microbial and anti-fungal agent.


Gelair improves indoor air quality

  • Inhibits the growth of mold
  • Kills bacteria(including Legionella Pneumophilawhich is responsible for Legionnaires’ disease)
  • Kills viruses(studies have shown tea tree oil to be effective in inhibiting the replication cycle of H1N1)

Why do I need Gelair?

Moisture build up in air-conditioning AHUs is inevitable. With Asia’s humid environment and condensation issues, we quickly see why our cooling systems provide the perfect environment for mold and bacteria to grow. If these mold or bacteria grow on the exterior parts of the system, they can be cleaned away. But what about all the bacteria we can’t see ?


If air-conditioning systems are left untreated, we end up with:
  1. The spread of invisible bacteria and viruses
  2. The growth of mold throughout the system
  3. A strong odour due to mold and bacteria that is often masked with fragrances or perfumes
  4. Increased instances of sick building syndrome
By adding a Gelair block to your AHU, you have a natural, effective way of making sure your ducts remain healthy and more importantly, the air entering the occupant zones is treated for mold, bacteria and viruses

What is sick building syndrome?

Definition from Wikipedia: “Sick building syndrome (SBS) is a combination of ailments associated with an individual’s place of work or residence. A 1984 World Health Organization report into the syndrome suggested up to 30% of new and remodeled buildings worldwide may be linked to symptoms of SBS. Most of the sick building syndrome is related to poor indoor air quality. Sick building causes are frequently pinned down to flaws in the heating, ventilation and air-conditioning (HVAC) systems. Symptoms: Sensory irritation of the eyes, nose, throat; Neurotoxic or general health problems; Skin irritation & Nonspecific hypersensitivity reactions; and odor and taste sensations.” The symptoms referenced in the Wikipedia definition above are symptoms associated with mold and bacteria exposure.
A study in Singapore showed that 1 in 5people suffer from sick building syndrome.*

How is Gelair installed?

gelair It couldn’t be easier. Open up the packaging and place the Gelair block in the AHU between the filter and the cooling coil. Gelair is supplied in a vacuum bag so some of the solution will be left in the packaging. This can simply be poured into the AHU and will help give an initial burst of tea tree oil vapour into the system.


What does Gelair smell like?

The natural smell of Gelair is from the tea tree oil. When Gelair is first inserted into your system, you may notice a faint tea tree odour which most people describe as “clean” and “fresh”. This initial scent is the best way to be sure the Gelair block is releasing optimal concentrations of tea tree oil throughout the system and reassures you that the room is treated for mold, bacteria and viruses.
Who uses Gelair?
Gelair has been available in Australia, the US and Europe for 10 years. Now it has finally come to Asia and can be applied in any air-conditioning system.

Case Study

The following data is from a floating vessel used by the offshore industry for the processing and storage of oil and gas.
gelair gelair
* The yeast and mold counts are higher for the outside main deck as this represents outside air that is yet to be treated by Gelair in the system


How long does the Gelair block last and what size do I need?

Gelair comes in 4 sizes (0.5l, 1l, 2l and 4l) and the size required depends on the amount of air passing through the AHU. As a general rule of thumb, each Gelair block should be replaced monthly and the size requirements are summarised in the table below.


How does Gelair compare to other treatment options?

Gelair is the best treatment option that manages the entire air-conditioning system. Not only does it treat the air passing through the system, it also treats the AHU, the ducts and the diffusers.


Gelair is also the simplest to install.

  • No training required to install the Gelair block
  • No installation equipment required
  • No energy required to run the system

Are all tea tree oil products the same?

No. The processing and refining of tea tree oil is an exact science and due to the complexities, not all tea tree oil is the same. Gelair was developed in Australia, with oil sourced from local tea tree farmers. To ensure efficacy, every batch of tea tree oil used in Gelair products is chemically analysed to confirm it meets the highest standards.

Gelair Solution

gelair The anti-bacterial benefits of Gelair are also available in solution form. Gelair Solution provides the perfect tool to clean cooling coils, condensate trays, and other areas exposed to mold and bacterial growth.

Benefits of Gelair

  1. Kills mold
  2. Kills bacteria (including Legionella)
  3. Kills viruses (including HSV & inhibits the H1N1 replication cycle)
  4. Simple to install and no maintenance
  5. Improves indoor air quality (e.g. for Green Mark assessment or to reduce sick building syndrome)
  6. Kills odour causing bacteria instead of just masking the smell
  7. 100% natural
  8. No bacterial resistance issues
  9. Treats the air, the ducts and the rooms
  10. Regular maintenance cycle (monthly applications) with no operational costs