While guidance about air purifiers with HEPA filters is helpful, have you any insight to share about the Bi-Polar Ionization Devices that can be installed at the blower point in the HVAC system??
They put out + and - ions which attach to small particles in the air making them larger, enabling them to be captured in the return air filter. In the case of viruses, these ions pull out hydrogen atom which deprives the virus of energy needed for survival. This information was drawn from Nu Calgon I-Wave R video that my HVAC Service sent me from You Tube. I installed this in the salon, because it had other benefits.
Can you please comment on this type of technology applied indoors as it relates to small particle viruses?
Grateful for your easy to understand writings!