Ceiling fans

Why do ceiling fans lose speed?Troubleshooting a slow ceiling fan

Ceiling fans are a great way to keep your home cool, but your ceiling fans slow down and you feel frustrated because they’re no longer as cool.If you don’t know how to fix them, you can rest assured that we have you

Why do ceiling fans lose speed?
Why do ceiling fans lose speed?

From cielingfanwiki.com, Toby Nwazor will answer Why do ceiling fans lose speed? and Troubleshooting a slow ceiling fan has good tips for you, let’s get started.

Why do ceiling fans lose speed?

Why do ceiling fans lose speed?
Why do ceiling fans lose speed?

There are many reasons why the ceiling fan slows down, we need to check the factors that affect it in turn

Capacitor ceiling fan

Capacitor Application Issues

Source: ieeexplore.ieee.org

Is used to start the fan and ensure its smooth operation. Over time, the capacitor can lose its charge and need to be replaced. If your ceiling fan starts to run more slowly or makes strange noises, it may be time to replace the capacitor.

Power Overload

If your ceiling fan starts to lose speed, it could be due to a power overload. This usually happens when the fan is used for too long or if it’s left on high speed for an extended period of time. If this is the case, you’ll need to give the fan a break and turn it off for a few minutes.

Voltage Boost

Ceiling fans lose speed for a variety of reasons, but one common cause is voltage boosting. Voltage boosting occurs when the electrical current running through the fan’s motor is increased, causing the motor to spin faster. This can happen if the power supply to the fan is increased or if the fan is used in an area with high humidity

Loss of lubricating oil

One possible reason your ceiling fan has lost speed is that it has lost its lubricating oil. Over time, the oil in the motor can evaporate or leak out, causing the parts to rub against each other and create friction. This can make the fan run slower and eventually stop working altogether.

Accumulation of dust

Dust accumulation on the fan blades is one of the main causes of ceiling fans slowing down. When the propellers are dusty, they cannot move freely through the air, which causes them to rotate more slowly.

In addition, dust that accumulates inside the motor that powers the ceiling fan can wear down, putting weight on the motor, causing them to slow down.

Ceiling fan bearings

May break down over time, broken pellets,worn out, they no longer work smoothly, causing the fan to rotate more slowly.

Loose screws

Loose screws can cause the fan blades to wobble, which creates resistance and makes the fan work harder.

Unbalanced blade causes wobble

The blades of a ceiling fan are designed to be perfectly balanced so that they can rotate smoothly and efficiently.

However, over time the blades can become unbalanced, causing them to wobble. This can put stress on the motor, making the fan lose speed.Dirty bladesAnother reason why ceiling fans lose speed is because

Age of ceiling fans

Most ceiling fans last around 10-12 years. If your ceiling fan is starting to lose speed, it may be due to the age of the fan.

Engine failure

This is the most common reason for a ceiling fan to lose speed. The motor is responsible for generating the power needed to turn the blades, so when the fan starts to fail, the fan will slow down.

Ceiling fan controller

The ceiling fan switch is broken, the power supply to the motor is not enough, causing them to flicker, many people mistakenly think that the motor is damaged.

Why do ceiling fans slow down over time?

Why do ceiling fans slow down over time?
Why do ceiling fans slow down over time?

There are several reasons why ceiling fans may lose speed over time. The most common reason is simply due to wear and tear of the motor.

Ceiling fans are constantly in use, so it’s not surprising that the motor will eventually start to slow down.

Another reason for a decrease in speed could be due to dust buildup on the blades or in the motor. When the blades are clogged with dust, they can’t move as freely, which causes the fan to run slower.

Ceiling fan capacitors can be damaged they no longer charge to drive the motor to run

Finally, if the ceiling fan is old or of poor quality, it may simply be not designed to run at high speeds for long periods of time.

Troubleshooting a slow ceiling fan

Troubleshooting a slow ceiling fan
Troubleshooting a slow ceiling fan

Turn off the ceiling fan supply before checking the cause of the slow rotation of the ceiling fan

1.Electricity supply

Check if the power supply to the ceiling fan is stable
Usually ceiling fans have a standard source of 100v or 110v, if it fluctuates a lot, it will affect the speed of the fan, you should use a transformer.

2.Ceiling fan controller

Check if the ceiling fan switch is broken, check the input and output power of the switch, replace the switch more stable

3.Ceiling fan capacitor

Check the power supply with an ohm meter, if it is no longer the correct indicator given by the manufacturer, you should replace it.

Buy old capacitors of the same specification from an electrical store and change them to color

How do you replace your ceiling fan capacitor?

Source: twitter.com


Check to see if it’s dry proceed to oil the filling hole or other places that create friction


Ceiling fans are easy places to accumulate dust because of air circulation, so they will carry dust particles, the places that often press dust are the engine blades and inside the engine … use a towel to wet stubborn stains and use a machine vacuum cleaner. Then let them dry naturally

6.Ceiling fan bearings

Method 1: Use one hand to hold the propeller assembly and hold the motor head
and complete their displacement considering their displacement
Method 2: Turn the wings slightly by hand to hear the noise

Replace them if you can, otherwise ask a repairman

7.Loose screws

Check all the places where the screws are to see if they are loose or not tight

8. Propeller

Take one wing as a standard and check all the other blades for any difference, calibrate it to the standard with a wing balancer or replace them if damaged.

9.Age of ceiling fans

Consider the durability of the product on the manufacturer’s recommendation
usually 12 years or 15 years ,replace them if you have the budget

10.Engine failure

Check if the copper coil is burnt, can check the motor for smell and proceed to replace them

What is the procedure for adjusting the speed of your ceiling fan?

What is the procedure for adjusting the speed of your ceiling fan?
What is the procedure for adjusting the speed of your ceiling fan?

The procedure for adjusting the speed of your ceiling fan will vary depending on the model of fan that you have. However, most fans will have a switch that you can use to change the speed.

  • For a ceiling fan with a pull chain, you will need to locate the switch on the motor housing.
  • For a ceiling fan with a remote control, you will need to find the button on the remote that controls the speed.
  • Once you have located the switch or button, you can then adjust the speed of the fan accordingly.

What is the lifespan of ceiling fans?

What is the lifespan of ceiling fans?
What is the lifespan of ceiling fans?

The lifespan of a ceiling fan will vary depending on the quality of the fan. However, most fans will last between 5 and 15 years.

How often should you replace your ceiling fan?

You should replace your ceiling fan when it begins to show signs of wear and tear. Additionally, you should replace your fan if it is more than 15 years old.

What are some signs that it is time to replace your ceiling fan?

Some signs that it is time to replace your ceiling fan include:

  • The blades are starting to wobble.
  • The motor is starting to run slowly.
  • The bearings are beginning to wear out.
  • The screws are starting to loosen.

Measures to prevent the ceiling fan from turning slowly

  • Clean the ceiling fan regularly
  • Check power supply and switch
  • Oiling
  • Check the ceiling fan noise level
  • Maintain ceiling fans at least once every 3 months

Replacing a ceiling fan is the best way for you to refresh the look of your beloved home, with a new strong wind and you will feel safe.

You no longer have to spend a lot of time maintaining old ceiling fans, fix again and again. Plus you don’t have to worry, what to do with old ceiling fans? you can sell them or give them to a collection center

F.A.Q Why do ceiling fans lose speed

What causes the speed of a ceiling fan to decrease?

The most common cause of decreased fan speed in older fans is wear and tear on ball bearings as a result of friction. Another two causes for the loss in speed of old fans are voltage fluctuations and a problem with the capacitors in the fans themselves.

When ball bearings begin to show signs of wear and strain, it is necessary to replace the old fan with a new fan.

How do you repair a ceiling fan that is running slowly?

How to Troubleshoot a Sluggish Ceiling Fan
How to troubleshoot a sluggish fan. Make a spinning motion with your palm when the fan is turned off and halted…
Making certain that there is enough lubrication…. Balancing the machine for improved operation…. Recognizing a faulty capacitor…. Inspecting the motor for a damaged winding.

What is the best way to raise the speed of my ceiling fan?

Reduce the amount of vibration in the blades….
… Apply lubricant to the moving components of the fan.
Turn on the fan and check to see whether the basic cleaning has resulted in the fan speed being restored to its original settings.

Check the pull chain switch on the fan to make sure it is working properly.
Check the cables where the pull chain switch is connected to the fan to make sure they are not frayed.

What is the reason for my ceiling fan only operating at one speed?

Another possibility is that your fan is not functioning properly. Other possible causes include overheating in your fan’s motor or a failed capacitator, both of which may cause your fan to only work at one speed.

It’s possible that your ceiling fan has stopped operating or is not turning on because it isn’t getting any electrical power at all.


Ceiling fans are a great way to cool down during the summer, but they can sometimes lose speed. In this blog post, we’ve looked at some of the reasons why ceiling fans may lose speed and how you can troubleshoot them.

Have you ever had a problem with your fan losing speed? Let us know in the comments below.

Toby Nwazor

Toby Nwazor is a serial entrepreneur, a success coach, a business development consultant, a strategist, a motivational speaker, and a freelance writer. He writes on other cool platforms like Entrepreneur magazine, Success.com, Good Men Project, and Business 2 Community and author of website articles Ceilingfanswiki.com . He is the founder of My Startup CEO where he gives kick-ass motivation and provides helpful tips for start-up business success. Follow him on Twitter, and Like MSC on Facebook

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