The Simple Dollar found on that on average, a ceiling fun running in aroom makes it feel around four degrees cooler. According to government studies, setting your air conditioning temperature to 1.8 degrees cooler can reduce its running time by 10%.

And putting these two facts together, you can save around 23% of your air conditioning costs by using a ceiling fan,

Furthermore, according to The Simple Dollar's calculations, dropping the running time of your central air from 9 hours to 7 hours per day using this technique will save you some money.

While energy bills differ from place to place, you can be saving quite a substantial number on your bills. Photo by Steve Johnson

[The Simple Dollar]