Summary
Here’s why you may want to keep that air vent open, according to experts.
1. Importance of Air Quality on Airplanes
We know, we know — discussing ventilation systems on airplanes seems outdated. However, air quality is still an essential topic for preventing the spread of bacteria and viruses, including COVID-19. Therefore, one critical, expert-approved tip to enhance passenger safety is to keep your air vents open.
Leaving vents open allows for proper air circulation, which can help prevent the spread of airborne pathogens. Although closing your vents might not worsen the situation entirely, it is advisable to have them open. According to the International Air Transport Association (IATA), “cabin air is refreshed 20-30 times an hour, about 10 times more than most office buildings.”
2. How Airflow Works in the Cabin
The air in an aircraft cabin consists of a mixture of fresh air drawn from outside and recirculated air treated by high-efficiency particulate air (HEPA) filters—capable of capturing 99.97% of contaminants, including bacteria and viruses.
Nonetheless, there remains a potential for bacterial and viral spread within the cabin before the air is filtered. This flyer-to-flyer transmission can occur, particularly if a nearby passenger is coughing or sneezing. Consequently, keeping your vents open can help manage this concern.
Air movement in a plane cabin typically flows from top to bottom. The supply originates from overhead vents, while returns are situated near the floor. Jason Harp, CEO of Air-Cert, LLC, explains, “The supply usually comes from the top of the cabin, notably through personal air vents.” Keeping your vents open ensures that air flows efficiently throughout the cabin.
3. Maintaining Cleanliness on Airplanes
While proper airflow contributes to a healthy environment, it’s also crucial to acknowledge that certain areas on airplanes can harbor germs. For instance, HEPA filters do not eliminate bacteria present on surfaces like armrests and tray tables. Therefore, it is wise to clean hard surfaces around your seat.
According to experts, airlines prioritize cleanliness, but variations in standards can occur based on operational constraints. Consequently, passengers are encouraged to practice additional safety measures, such as using hand sanitizer and wiping surfaces.
Moreover, it’s important to consider the air filtration systems during boarding and deplaning. These systems may not always be active on the ground, contributing to a stuffy atmosphere while at the gate. For added safety, consider wearing a mask during these times. However, once airborne, don’t forget to open your vent, as it will enhance airflow around you.
