HomeMy WebLinkAbout040323 Ordinary HEPA filters do not affect CO2 levels________________________________
ALERT: BE CAUTIOUS This email originated outside the organization. Do not open attachments or click on links if you are not expecting them.
________________________________
Folks,
During the monthly health update in the BoCC meeting on Monday (April 3), both Dr. Berry and Mr. Bence said that HEPA filters could be used to address excessive levels of CO2.
The “P” in HEPA stands for Particulate: High Efficiency Particulate Air.
By definition, ordinary HEPA filters deal only with particulates, not gases like CO2, CO, NOx, SO2, etc.
If the filter has an activated charcoal feature, it will adsorb many VOCs, CO, NOx, SO2, etc., but it will not reduce CO2 levels. For that, you need a CO2 scrubber, and these are not
common in consumer-level appliances.
I would like to hear the BoCC, and KPTZ, clarify this so that people aren’t led into a false sense of security or waste their money buying an inadequate or inappropriate appliance.
Thank you,
Tom Thiersch