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Calgary student has been studying decibel levels in hand dryers since age nine (cbc.ca)

681 points by lxm · 2675 days ago · 320 comments on HN

Article summary

A Calgary student has been studying decibel levels in hand dryers since age nine. The discussion around the article focuses on the issues with hand dryers, including noise levels and hygiene concerns. Some commenters share their own experiences with hand dryers, including difficulties with using them correctly and the potential for spreading bacteria. The conversation also touches on alternative methods for drying hands, such as using paper towels or letting hands air dry.

Main themes

  • hand dryer noise
  • hygiene concerns
  • alternative drying methods
  • user experience
  • bacteria transmission

What commenters say

  • Hand dryers can be extremely loud and potentially harmful to those with noise sensitivities, especially children and individuals with autism.
  • The design of some hand dryers, such as Dyson models, can make it difficult for users to avoid touching the device and potentially spreading bacteria.
  • Letting hands air dry or using paper towels may be more hygienic and environmentally friendly than using hand dryers, which can blow bacteria onto hands.
  • Some hand dryers, like those with HEPA filters, may be designed to mitigate hygiene concerns, but maintenance and filter replacement are crucial to their effectiveness.
  • The use of hand dryers in public places, such as restaurants and kitchens, is often prohibited due to health regulations, suggesting that paper towels may be a preferred option in these settings.
  • The noise levels of hand dryers can be unbearable for some individuals, leading them to take measures to avoid exposure, such as wearing headphones or avoiding certain areas.
  • Alternative methods for drying hands, such as using tissue paper or clothing, may be viable options for those who dislike or cannot use hand dryers.