In this time of global pandemic where COVID-19 is spread via airborne particles exhaled from the lungs, there has been a marked increase of interest in air filters and air filtration systems. People are looking to keep their home — and air — as safe as possible, but there are a lot of options. Can air filtration keep you safer?
Air Filters and Air Filtration Options
When it comes to cleaning the air in your home, there are several options. These include:
HEPA Air Filters
High efficiency air filters are used to filter out dust, allergens, dander, and mold from the air. Most homes use these HEPA-like air filters to treat seasonal allergies. Unfortunately, virus particles are too small to be consistently caught. Even the HEPA filters used commercially in hospitals are not relied on for their sole air filtration needs as they are not 100% effective.
Electronic Air Filters
Electronic air filters catch larger particles in a pre-filter, then anything small enough to get past is caught in an electrically charged filter. This has been proven to eliminate some virus molecules like SARS but has not been concretely proven to kill COVID-19 yet.
UV lights are effective in killing viruses, but the amount of UV light needed would also damage us if exposed. Hospitals use them to help sterilize protective clothing and tools. For UV lights in the home, they can be installed in ducts or on evaporator coils. Unfortunately, most virus particles are not exposed to the UV light long enough to be effectively destroyed as the air is always in motion.
Air scrubbers produce oxidizers that contaminate and destroy them. This has been proven effective on Swine Flu, Staph, Strep, and Bird Flu, but not yet on COVID-19. It is also worth noting that air scrubbers can be expensive as well.
What to Take Away from This?
Air filtration, on a residential level, is not a reliable way to keep COVID-19 out of the home. There has not been anything that has been concretely proven to filter COVD-19 out of your air without significant expense.
If you want to have cleaner air just to have better air quality inside the home, we can help with that. Contact us today to see what Minnesota Heating & Air Conditioning can do to help.