Avoid Recirculated Air


Most of the time, automobile air recircu­la­tion is off. Exceptions are when you are driving behind diesel vehicle or traveling near cow or pig farms. If enabled you may notice louder fan noise as your exhalation is recirculated throughout the cabin. Disable to pull fresh air from outdoors.

If you are traveling by yourself or with those in your household, you are used to breathing in each other's air. If you are a Lyft or Uber driver, you might take your chances with diesel emissions while wearing a mask. Some rideshare drivers have a safety partition for additional protection.

Office buildings with HVAC should similarly avoid recirculating air. COVID-19 (alpha) remains active up to 3 hours in indoor air and 2–3 days on room surfaces at common indoor conditions. Such small virus particles linger airborne and travel long distances carried by air­flows in the rooms or in the air extrac­tion ducts of ventilation systems.

Sometimes air handling units and recirculation sections have return air filters. But most of these filters, even HEPA filters may not filter out virus size particles effectively. Whether you are in an auto­mobile, home, or business, pay attention to filters for recirculated air or vent air from outdoors.

Coronavirus pandemic information represents a historic snapshot of fluid events. To support the writing of useful articles about COVID-19, ClinicalPosters sells human anatomy posters, scientific posters and other products online. You can donate or leave an encourag­ing comment to keep the work going. Stay safe and A Bit More Healthy.

  1. Lyft to provide drivers with partition shields as coronavirus protection./2020/07/17/lyft-to-provide-drivers-with-partition-shields-as-coronavirus-protection.html Retrieved 29 Jul 2021
  2. Rideshare Safety Partition. ridesharesafetypartition.com Retrieved 29 Jul 2021
  3. Driver Bubble. driverbubble.com/products/driver-bubble-one/ Retrieved 29 Jul 2021
  4. COVID-19 and the Risk from Recirculated Air in Buildings. greenbuildinglawupdate.com/2020/04/articles/environmental/covid-19-and-the-risk-from-recirculated-air-in-buildings/ Retrieved 29 Jul 2021
Kevin Williams is a health advocate, artist, pro­gram­mer, and writer of hundreds of articles for multiple web­sites. He has 17 years experi­ence as a Neutrogena Research and Scientific Affairs graphics con­sul­tant.

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