How come ceiling fans get so dirty when they are in constant motion?

Jump to Last Post 1-7 of 7 discussions (13 posts)
  1. mary615 profile image90
    mary615posted 4 years ago

    How come ceiling fans get so dirty when they are in constant motion?

  2. profile image49
    Noumanfaizposted 4 years ago

    because when the fan pulls down dirty air the wings of fan remove some dust because of their fast moving a circular sheet like wind stream is formed that moves the dirt in the inner side. This process takes a lot of time like weeks ,couple fo weeks ,months and sometimes even years.

  3. ARUN KANTI profile image33
    ARUN KANTIposted 4 years ago

    The blades of ceiling fans in motion  gather a layer of dust which  then they can broadcast  if they’re not cleaned regularly. So  it is important to turn the fans off long enough to clean the blades off and on.

  4. KenDeanAgudo profile image84
    KenDeanAgudoposted 4 years ago

    It is because even in constant motion, dust and particulate matters on the air stick on the fan especially if it get moist or wet. In some cases, dust on ceiling fan are cause by dirty substance on the air just like our nose, even how hard we tried to make it clean and away from dirt, we find our nose still have booger! lol

  5. eugbug profile image98
    eugbugposted 4 years ago

    Some dust or particulate matter has a degree of stickiness which makes it stick to the fan. e.g. oils from cooking, tar from  smoke etc. Also static cling will make dust stick to fans. Possibly as a fan spins through the air,  friction with air molecules increases the charge on the blades if they are made from plastic. Once a layer of dust builds up, more dust can stick to the "rough" surface.

    1. tsmog profile image81
      tsmogposted 4 years agoin reply to this

      Great work! As said I just ponder. However I enjoy fun. or Impress Education (ESA): Circular Motion where the formulas for mass of rotating objects are shared. Again, I don't understand this stuff

  6. tsmog profile image81
    tsmogposted 4 years ago

    Speculatively it is the 'venturi' effect of air flow. The fan does cause a draw downward pulling air toward the rotating blades. Like a carburetor on a car (even a fuel injection system with air intake) particles or residue will also be pulled downward with the air flow.

    Air is a mixture and is not pure in any real sense. Air is composed of oxygen, nitrogen, argon, carbon dioxide, and about a dozen more elements. Each have different properties. Then there is dust and its compostion(s) - smoke from cooking, dust from day to day, outside influences if windows are open, and etc.

    The fan spins, yes, but it has a surface area and it spins at a constant rate. All surfaces have tension factors with elements it is in contact with. Each has different surface tensions. For instance smoke is probably higher than dust as it is more closer to a liquid than dust being somewhat dry. So, a fan near the kitchen may get 'dustier or dirty' more than a fan in the bedroom.

    There are other factors if one gets down to the nitty-gritty of it all. There is also the affects of gravity. Gravity is the attraction of one mass toward a greater mass. Dust and smoke for instance have less mass than the fan blades even though they are spinning. Just like meteors are attracted toward earth even though the earth spins around the sun and around in the universe.

    When all those are combined a percentage mostly likely very small will accumulate upon the fan blades. They may, and not being a scientist, so this is speculative follow these principals having the greatest consequences resulting with accumulation.

    Venturi effect → gravity → compound or element structure (smoke contrast dust) → surface tension principals → down time (the fan stops and the compound/element sits inactively)

    I say down time because just like a pond that grows stagnant with less activity (air flow around the fan blades like a stream entering the pond, passing through the pond, and exiting the pond) the accumulated matter - dust particles, smoke residue, and etc seeks a state of entropy (gradual decline toward disorder regarding energy) or does nothing and sits on the blades. Then in a sense it forms a 'new' compound of all those elements - smoke, dust, and etc we may call 'gunk' or 'grime' through the properties and principals of attraction(s) like gravity.

    It is nature at work with the rules we know nature works within.

    1. eugbug profile image98
      eugbugposted 4 years agoin reply to this

      It would be interesting to do the math to see what influence gravity due to the fan blades mass would have on the downward trajectory of a dust particle. I would think  Earth's gravity would be dominant, and a particle would be deflected minutely.

    2. tsmog profile image81
      tsmogposted 4 years agoin reply to this

      I am much more concept orientated than math. Distance I am sure will come into play with regard to mass and attraction as when a force is more dominate regarding vector angles. Again, I am more conceptual. Kinda like the movie 'Armageddon' Thanks! smile

    3. mary615 profile image90
      mary615posted 4 years agoin reply to this

      What a great answer!  I leave my fans on all the time, and of course the kitchen fan gets dirtier than the others.  I tried apply paste wax to them, but it didn't help.

    4. eugbug profile image98
      eugbugposted 4 years agoin reply to this

      For any nerds out there interested in such trivia, I just did the math. It turns out that a 50 kg mass at 10 cm distance would accelerate a 1 microgram piece of dust to walking speed in 7 weeks! (Using F=Gm1m2/r^2)

    5. tsmog profile image81
      tsmogposted 4 years agoin reply to this

      LOL, LOL, LOL The solution set is Fantastic and paper towels smile

  7. agusfanani profile image76
    agusfananiposted 4 years ago

    Static electric also one of the factors  to make dirt sticks on plastic fan blades.


This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

Show Details
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)