Ceiling fans have come a long way since the industrial revolution where they were dreamed up by sweating factory workers. These workers attached wooden or metal blades to the overhead whirling shafts that were used to drive the machinery they worked on.

Before you purchase a ceiling fan you'll need to consider the blade sweep. You don't want to overwhelm a smaller room with a ceiling fan that's too big, but, you also want to make sure that the ceiling fan will be able to displace enough air to cool you off in a larger room. Another consideration before purchasing a ceiling fan is the length it will drop from the ceiling. A home with an 8 foot ceiling would probably use a three inch down rod for a ceiling fan, and a room with a fifteen foot high ceiling would need at least a one foot down rod, up to a five foot down rod. It is suggested that you have at least seven feet of clearance from the floor to avoid accidents.
Installing a ceiling fan yourself is a fairly easy job for most do-it- yourselfer's. There are many online sites available to help you if you have any problems or questions.
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