The World Health Organisation (WHO) have recently acknowledged growing concerns surrounding the possible airborne transmission of the coronavirus COVID-19. Australian medical officials are closely monitoring the outcome of pending investigations, however, there are no changes to current Australian Government recommendation at this time.
Infectious respiratory viruses are typically spread from person to person through close physical contact with one another or through respiratory droplets (produced when an infected person coughs or sneezes) which may be inhaled or come into close contact with the eyes, nose or mouth of another person.
Respiratory droplets are very small, often invisible to the eye, with a particle size ranging from less than 0.5 micron to 15 micron, and standard measures to help mitigate these droplets within indoor HVAC systems include:
Upgrading to higher efficiency air filters (F9 or ePM1 85%) is recommended for HVAC systems with AHU’s, however due to increased resistance to airflow and space restrictions, this may not be practical for every commercial HVAC system.
Please Note: Upgrading particulate air filters will also result in:
The next best option is to select the highest-rated air filter your HVAC system can handle, and/or run the system on an economy cycle (with 100% outside air) where possible.
Portable in room air cleaners/purifiers may also assist with reducing viral load. Especially where supplementary localised controlling is needed.
An interesting US based article regarding how modifications to heating, ventilation, and air conditioning systems might help reduce the spread of the coronavirus COVID-19 by purifying air, improving ventilation and managing airflows has recently been published to the McKinsey and Company website. This article was written collaboratively by the Advanced Industries Practice, and published to the site on July 9, 2020.
See article link below:
Camfil Airepure have a comprehensive range of high efficiency air filters in stock, ready for you HVAC filtration needs. Please contact us for assistance with selecting the most suitable upgraded air filter that your existing HVAC system can handle.
We also offer the Camfil range of portable air purifiers and air cleaners, or customised solutions.
Contact Camfil Airepure for further information.
*Purchased image from iStockPhoto.
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