Hygiene and Facilities Managers have long understood the benefits of keeping their air handling units and ductwork clean. However, the Building Engineering Services Association (BESA) says that air cleaning and associated hygiene regimes should become standard practice after the COVID-19 pandemic.
Airborne Virus Transmission
The World Health Organization (WHO) tells us that smaller particles (less than 5 micrometers (µm)) will remain in the air for many minutes or even hours. In a BESA webinar last week, speaker Richard Greenwood of Radic8, said that the ventilation industry has “a crucial role to play both during and after the pandemic”. He explained that 40,000 virus-laden droplets emit from a single sneeze. Furthermore, these can travel more than 8 metres and can remain airborne for up to 3 hours.
During the BESA webinar, Mr Greenwood also said that there are 4 known transmission routes for COVID-19. These are direct contact, indirect contact, droplets and airborne. He stressed that preventing transmission at airborne level will stop build-up on surfaces. This will, in turn, reduce contact transmission.
Regular Cleaning Tackles Airborne Contaminants
Experts agree it is essential to implement measures to tackle airborne contaminants. Filtration plays an important role in tackling airborne contaminants. However, this should be supplemented with frequent and regular cleaning. According to Mr Greenwood,
“We now have evidence that microbial contaminants will grow on filters in 14 days and these either need to be tackled by more regular filter changes or by increased cleaning.”
David Frise, BESA chief executive, said the evidence presented by Mr Greenwood demonstrated the significant role the ventilation hygiene industry would play from now on in making buildings safe. Read the full article on the BESA website here.
HVDS offers a comprehensive hygiene service for your HVAC and LEV systems. Our customers benefit from regular and scheduled filter changes and cleaning and remedial work. For more information, get in touch on 01785 256976 or contact us here.