- Latest News From ASHRAE: Click here to read the latest news and recommendations from ASHRAE regarding Covid-19
- ACHR News: Coronavirus Prompts Response in HVAC Industry: Contractors can take steps to cut down on airborne transmission
- World Health Organization News Room: https://www.who.int/news-room/q-a-detail/q-a-coronaviruses
- From our partners at Camfil: Click here to read about reducing the risk of viral infection by combating air pathogens
Products We Sell To Combat Airborne Pathogens
- Portable air purifiers that use both UV-C and HEPA pre-filters to disinfect the air. Click here to learn more.
- Negative-pressure isolation pods to quarantine infected persons while they recover. Click here to learn more.
- Fan Filter Unit to create negative pressure in enclosed spaces. Click here to learn more.
How does Covid-19 spread?
- Via air & direct contact. Specifically, via large droplet transfer (coughing/sneezing and with some folks, strong exhalations).
- Most droplets don’t stay suspended in air for long, due to their mass.
- That means they tend to fall on surfaces, where they can remain viable anywhere from a few hours to several days (according to the World Health Organization).
- If an infected person coughs or sneezes into their hand and then touches a surface that another person comes into contact with, the virus can spread.
- Airborne transmission, while less likely, is also possible.
- Some droplets may be small enough that they stay in the air and enter an HVAC system.
- From there, they could spread to other parts of a facility and infect people.
Do HEPA Filters Help?
- While HEPA filters are excellent choices for trapping 99.97% of particles down to 0.3 microns in size, coronavirus is even smaller – between 0.06 and 0.14 microns. Therefore, filtration alone isn’t enough. ASHRAE recommends using UV-C disinfection, as well.
UV Disinfection Systems
- Ultraviolet systems are good choices to add to conventional filtration because they kill pathogens that are small enough to pass through filters.
- Consider employing both upper-air UV and HVAC germicidal fixtures to mitigate the potential spread of airborne diseases in communal areas.
- Portable UV-C air purifying units are also a good choice for high-traffic / high-density areas within a facility.
- Try increasing the number of air changes in your facility (not tied to temperature), so ventilation is improved.
- Read this useful information from our partners at Camfil regarding low- and high-risk environments.
There are a lot of other helpful tips provided in the resources below.
If you have questions about the filters you’re using, how effective or efficient they are, or want more information on UV disinfection systems, please let us know. We’d be happy to talk more about your facility’s unique needs. Call us at (585) 288-1600 or send an email to firstname.lastname@example.org to get started.