Harbor Breeze Ceiling Fan Speed Switch Wiring Diagram - Do you know what? The title of the article is merely out and out misleading. The only actual "con" in regards to some ceiling fan is what it takes to get one properly installed. Ceiling fans can be hard to install for the inexperienced do it yourselfer. In some cases, where the ceiling fan is to be installed, you'll need to run an electrical line to the location. Hiring a competent, bonded and licensed electrician will most likely save you much grief in the long run unless you are adept at doing this sort of thing.
There's also the minor "con" that involves the problem of regular care. Correctly installed, a ceiling fan will give you many, many years of agreeable cooling and cost-savings on your heat bill (assuming there is a fan that enables you to reverse the blade direction).
On occasion, ceiling fans need slight adjustments and get out of balance. The most typical culprits are loose screws that attach the blades to the motor casing, blades that are not at the same angle (pitch) as the rest of the blades and a blade or blades that weigh slightly more compared to the others. Be sure that every one of the screws are tight, without going into great detail. When they truly aren't tightening the ones that have come loose and run the fan. Your problem has been solved, in the event the wobbling has stopped.
Otherwise, utilize a yardstick or other straight part of wood and put it (with the fan stopped) vertically in the outer edge of one of the blades. Rotate the blades by hand to ensure that the stick touches. If one or more don't, merely (and gradually) bend the blade(s) so that their pitch matches the others and repeat the process until you are satisfied that each blade has the same pitch.