Ceiling Fans & Allergies

Function

• Warm air naturally rises towards the ceiling. Ceiling fans work to equalize the temperature distribution by pushing the warm air downwards, forcing the cool air to circulate more evenly.

Effects

• Dust is comprised of charged particles that become attracted to the rotating fan blades as they create friction with the air and develop an electric charge.

Significance

• According to science writer David Bodanis, dust particles are made up of a range of harmful allergens that are regularly released into the air. Components of dust particles often include dead skin cells, dust mite and cockroach droppings, pet dander, and pollen.

Dangers

• The American Asthma Foundation reported that asthma affects 1 in 13 people in America, while the American Academy of Allergy Asthma and Immunology estimated that nearly 55% of Americans are susceptible to household allergens. The AAF also discovered that dust mites trigger asthma by confusing the immune system.

Prevention

• Home owners can regulate movement of airborne allergens by cleaning ceiling fans regularly, or installing fan filters that trap dust and bacteria.