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June 3, 2014 By Allen Electrical

The Science Behind Ceiling Fans

Ceiling FansIf you had a perfectly insulated room with a ceiling fan, the energy used to drive the fan would turn into heat. So, contrary to popular belief, ceiling fans actually add heat to a room.

The value of ceiling fans is in their ability to create a wind chill effect, similar to the wind chill you often hear weather reporters describe. This wind chill effect is due to blowing air increasing convective heat loss — essentially, causing liquid to evaporate more quickly.

Air blown by a ceiling fan causes the sweat on your skin to evaporate more quickly, which allows you to eliminate body heat at a faster rate.

According to Energy.gov, a ceiling fan will allow you to raise the thermostat about four degrees without any reduction in comfort. That’s putting money back in your pocket!

Bonus Tip: Since fans cool people — not rooms — turning off ceiling fans when you’re out of the room will save money without any loss of comfort.

Ceiling Fan Facts

  • Ceiling fans should only be placed in rooms with ceilings at least eight feet high.
  • Look for the ENERGY STARĀ® label. Fans that earn the label move air much more efficiently than standard models.
  • Fans with larger blades have a lower velocity than fans with smaller blades. This might play a role in your decision if you expect to have loose papers near the fan.

Save money and stay cool this summer by installing ceiling fans! Get in touch with us if you need help with the installation!

Filed Under: Summer Tips

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