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Is there a connection between air conditioning and the spread of coronavirus?

Published: April 06, 2020 Last Updated: July 30, 2020

Coronavirus, otherwise known as COVID-19, is currently spreading throughout the world, with hundreds of thousands of cases since the end of 2019.

Due to the rapid spread of the disease across the globe, the way in which the disease spreads has been of particular interest to everyone - How is it spread? What can we do to stop it? How can we protect ourselves? - with air conditioning being a big topic of concern.

So, can COVID-19 be spread via air conditioning systems

There isn't a simple 'yes it is' or 'no it isn't' response to this question - there are a few different aspects to consider. Firstly there is filtration, then there is recycled vs. outside air use, as well as temperature and humidity.

Filtration

When it comes to air conditioning systems, the process involves filtering out different airborne particles whenever it is on, with different air conditioning arrangements have different levels of filtration. For example, Etihad airlines have stated that the air conditioning in their planes filters out 99% of microbes in filtered air, offering peace of mind to those travelling home during the pandemic. On the other hand however, cruise ships use recycled air in their aircon systems, with filtration levels usually sitting at around 5,000 nanometers. What this means is that any particles larger than 5,000 nanometers will be filtered out and anything smaller will not. For reference, similar respiratory illnesses to COVID-19, such as SARS, sit at around 120 nanometers - so, if Coronavirus is around the same size as SARS, cruise ship air conditioning would not filter out the disease.

Some hospitals have also found traces of COVID-19 in their air conditioning vents, suggesting that the disease can possibly be transmitted this way, but this is yet to be confirmed.

Inside vs outside air use

Another aspect to consider is whether the aircon system that is in place uses recycled air or air from outside. For example, cruise ship aircon systems use recycled air, which means that air containing viruses is just reused throughout the cabin. Experts have suggested that using outside air, instead of recycled, for air conditioning systems can help greatly minimise exposure to airborne diseases such as COVID-19.

Temperature and humidity

There is evidence to show that both low temperature and low humidity, in relation to air conditioned spaces, may contribute to the survival of coronaviruses e.g. SARS. In order to combat this, always check your temperature and humidity settings on your air conditioning and definitely speak to an aircon expert for further assistance.

Ultimately however, the AIRAH (the Australian Institute of Refrigeration, Air Conditioning and Heating) has stated that they have not found any evidence to suggest that Coronavirus is spread through air conditioning systems in either a residential or commercial setting.

If you would like to know more about your air conditioning settings in this uncertain. time, give Static Electrics a call on 0429 139 039 and we can discuss your needs.

Resources:

Australian Government - Department of Health (Coronavirus): https://www.health.gov.au/sites/default/files/documents/2020/03/coronavirus-covid-19-information-on-social-distancing.pdf

News Hub (Coronavirus: COVID-19 samples found in isolation room air vents): https://www.newshub.co.nz/home/world/2020/03/coronavirus-covid-19-samples-found-in-isolation-room-air-vents.html

Daily Mail (Coronavirus could be spread by air-conditioning and may be more contagious than previously thought, scientists believe after finding traces of the virus in hospital air-duct): https://www.dailymail.co.uk/news/article-8086457/Coronavirus-spread-air-conditioning-contagious-previously-thought.html

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    12-11-2019

    David did an admirable job in installing a new solar inverter to our property. He gave a very clear and concise exp;lanation of how the system worked and what to look for in the event of a system malfunction. It is so satisfying to witness such efficiency!

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    09-08-2019

    Terrific service. Installers came on time, were friendly and efficient, and even cleaned up after themselves !! Absolutely no hesitation in recommending this company, and will definitely use them again

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    09-08-2019

    Static instaled our Air Conditioning. Nathan and the team were fantastic, chearful, clean and tidy and did a very neat job. The price was good too! Highly recommended.

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    26-08-2019

    Once again a great job performed by Static. These guys are very professional, friendly and tidy. We have used them on a number of occasions and never been disappointed or had any issues. Thanks to Nathan for his work today.

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    Eric was very courteous, precise and thorough in his work. Same as last time, very happy with your services and people who work for you. Will be back . Dagmar

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