Ceiling fans are electrically powered fans suspended from a ceiling of a room. They use hub-mounted rotating paddles to circulate air. Know how a ceiling fan works so you could enjoy its full benefits.
Different from air conditioners, fans only move air; therefore, they do not directly change its temperature. But despite its inability to change the air's temperature, ceiling fans that have a mechanism for reversing the direction in which the blades rotate can help in both heating and cooling.
During the summer, the fan's direction of rotation should be set so that air is blown downward; they're usually set to rotate counter-clockwise. This makes the evaporation of perspiration on human skin faster and makes our body's natural cooling mechanism more efficient. Thus leaving a ceiling fan on when no one is in a room is a waste of electricity.
In Winter, ceiling fans should be set to turn the opposite direction so that air is drawn upward-usually clockwise. This pulls up the colder air below. It forces the warmer air nearer the ceiling to move down without blowing air directly at the people in the room. This evens out the temperature in the room, hence the thermostat can be set a few degrees lower to save energy. To minimize the wind chill effect, the fan should be run at a low speed.
A ceiling fan is supported by a junction box-a junction box built specifically for ceiling fans. Using a different kind of junction box could lead to some serious damage in the future. A common mistake of homeowners is replacing light fixtures with ceiling fans without upgrading the junction box to a proper one. Thus the National Electric Code in the United States says that ceiling fans must be supported by an electrical junction box built for that purpose only. Another safety concern is the height of the fan relative to the floor. A ceiling fan shouldn't be installed with its blades closer than seven feet from the floor-this is often proven not to be high enough. If a person fully extends his or her arms into the air during normal tasks such as stretching, changing bed covers, and recreation, he or she could get seriously hurt when there is an operating ceiling fan installed too close.
Some ceiling fans wobble. Many people think that wobbling ceiling fans wobble because they are influenced by the ceiling on which they are installed. This is a common misconception. There's only one reason for a ceiling fan to wobble: its blades are out of weigh-alignment with each other. Several reasons could cause this: blades being warped, blade irons being bent, blade or blade irons not being screwed on straight, blades being different weights or shapes or sizes, etc.
Having said this, wobbling will not cause your ceiling fan to fall. It doesn't have an effect on your fan's security. There have been no reports of a ceiling fan wobbling itself off the ceiling and falling. But you need to bear in mind that a sever wobble can cause your fan's covers to gradually loosen over time and potentially fall. So if your fan starts to wobble, you need to have it checked right away.
Different from air conditioners, fans only move air; therefore, they do not directly change its temperature. But despite its inability to change the air's temperature, ceiling fans that have a mechanism for reversing the direction in which the blades rotate can help in both heating and cooling.
During the summer, the fan's direction of rotation should be set so that air is blown downward; they're usually set to rotate counter-clockwise. This makes the evaporation of perspiration on human skin faster and makes our body's natural cooling mechanism more efficient. Thus leaving a ceiling fan on when no one is in a room is a waste of electricity.
In Winter, ceiling fans should be set to turn the opposite direction so that air is drawn upward-usually clockwise. This pulls up the colder air below. It forces the warmer air nearer the ceiling to move down without blowing air directly at the people in the room. This evens out the temperature in the room, hence the thermostat can be set a few degrees lower to save energy. To minimize the wind chill effect, the fan should be run at a low speed.
A ceiling fan is supported by a junction box-a junction box built specifically for ceiling fans. Using a different kind of junction box could lead to some serious damage in the future. A common mistake of homeowners is replacing light fixtures with ceiling fans without upgrading the junction box to a proper one. Thus the National Electric Code in the United States says that ceiling fans must be supported by an electrical junction box built for that purpose only. Another safety concern is the height of the fan relative to the floor. A ceiling fan shouldn't be installed with its blades closer than seven feet from the floor-this is often proven not to be high enough. If a person fully extends his or her arms into the air during normal tasks such as stretching, changing bed covers, and recreation, he or she could get seriously hurt when there is an operating ceiling fan installed too close.
Some ceiling fans wobble. Many people think that wobbling ceiling fans wobble because they are influenced by the ceiling on which they are installed. This is a common misconception. There's only one reason for a ceiling fan to wobble: its blades are out of weigh-alignment with each other. Several reasons could cause this: blades being warped, blade irons being bent, blade or blade irons not being screwed on straight, blades being different weights or shapes or sizes, etc.
Having said this, wobbling will not cause your ceiling fan to fall. It doesn't have an effect on your fan's security. There have been no reports of a ceiling fan wobbling itself off the ceiling and falling. But you need to bear in mind that a sever wobble can cause your fan's covers to gradually loosen over time and potentially fall. So if your fan starts to wobble, you need to have it checked right away.
About the Author:
Martin Hays is a repair man from Germany. Among the various electronic device he fixes are ceiling fans ("Deckenventilator" in German).
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