Voltage fluctuations in your home can make the fan speed up or slow down unexpectedly. Low voltage can reduce motor efficiency, while voltage spikes may temporarily make it run faster or even risk damage.

Answer (1 of 6): It's probably because you're a hot mess and it can't handle all the gloriousness. Seriously though, there are a lot of things that can cause a fan to fluctuate in speed, such as dust accumulation, a dirty blade, or even something blocking the airflow. If you've ruled all of thos...

I don’t use the oscillation feature and it is not remote related. You can hear the motor rev (speed) up and then slow down an then rev up and back down over and over again on any one setting (I notice it more on the lower settings). It is not running steady. ... Since my review I think I have realized that the fan ...

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February 18, 2024 - You can clean the blades and motor with a damp cloth. ... Your ceiling fan speed can slow down because of dust accumulation, incorrect installation, capacitor issues, wiring problems or motor issues.

March 2, 2024 - The blades keep slowing down to the point where i can nearly count the revolutions and then speeding up back to normal. After it started happening i took apart the fan and did a clean and lube. Improvement for a day or two but behaviour now back exactly as before. If the problem is a bearing in t...

I have an new evaporator the slows and speed up about every 2 seconds. Up then down. Model Frigidair Model FRS23LH5DSR. ... Disclaimer: The customer and expert messages presented herein may have been altered or modified to enhance readability and safeguard the privacy of individuals. These modifications do not change the intent or substance of the original messages. ... Evaporator fan speed fluctuates causing repetitive noise and inconsistent airflow.

January 29, 2024 - Breeze Mode mimics the natural ebb and flow of winds in nature by varying the fan speed Please see How do I Enable or Disable Breeze Mode?

August 13, 2025 - Bearings allow the motor in your ceiling fan to spin smoothly, helping to create the necessary airflow that brings a cooling effect to your home. But much like the capacitor, these bearings can wear out over time. They can also loosen or even become dirty, which increases friction and forces the motor to work harder. This effectively slows down the fan.

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July 22, 2022 - Would check all wire connections for tightness, at fan and switch. Vibration and/or heat might be cause a bad connection/low voltage, fan slows down and cools and speed comes back up.

July 20, 2023 - The speed of a ceiling fan may slow down due to dust accumulation, motor problems, capacitor issues, wiring problems, or incorrect installation.

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April 23, 2020 - Slowing down a pedestal fan - Page 1

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We were using this oscillating fan a few times a week. It ran a bit slow, until eventually it just hummed, with the blades hardly moving. There are many ways these fans can fail, but if it hums when turned on, and the blade doesn't spin freely, then the problem is a seized bearing -- A very common failure mode for fans like this. In fact, if the fan has not been used for a few years, it's more likely to be seized than not. So I opened it up...

July 26, 2016 - Try taking the fan apart and and seeing if hair or build up is slowing it down if not it might be a short in the wiring.

The torque to drive the motor of your electric fan comes from the magnetic field induced in the motor coils when electricity passes through the coils. When the fan slows down and stops, it could simply be because the coils are worn out, but it's often a burned-out capacitor.