Fan capacitors, also known as fan condensers, play a vital role in regulating energy flow to the motor and controlling its speed. They are available in a wide range of values, from 2 to 70 microfarad. There are two types of capacitors that serve different functions in ceiling fans: start capacitors provide the initial push to get the fan spinning, while run capacitors maintain a consistent rotational speed.
Ceiling fan motors are a single phase AC induction motors. They have a rotor and stator windings that are connected in parallel. Initially when the AC mains supply is given, both winding generate fluxes in parallel. The auxiliary winding generates a positive magnetic flux, while the main winding generates a negative one. In the absence of a capacitor, this will result in net zero magnetic flux. This is why the capacitor is needed in ceiling fan motors to make them self-starting.
When AC current passes through the capacitor it starts charging, storing energy in an electric arc between the plus and minus sides of the capacitor. This will then create a fluctuating magnetic field within the windings of the motor that generates torque. When the motor is switched on, this will make it rotate at high speeds.
If the capacitor becomes damaged or worn out, then the fan will either not start at all or it will rotate but at a very slow speed. The best way to check if the capacitor is bad is to look for signs of bulging or discoloration in the thin plastic casing. To replace the capacitor, follow the directions below for your specific brand and model.
Fszdorj 20‘’ Ceiling Fan with Light, Upgraded Low Profile Fan, Flush Mount Ceiling Fan, 6 Speeds, Dimmable LED, App & Remote Control, Quiet DC Motor, For Bedroom, Living Room, F115 White
$89.90 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
ZMISHIBO Ceiling Fans with Lights and Remote, 19.7'' Low Profile Ceiling Fans, 3000-6000K Dimmable Modern Flush Mount LED Fan Light, 6 Wind Speeds, Black Fandelier Ceiling Fans with Lights for Bedroom
$89.99 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
addlon Ceiling Fans with Lights, 42 Inch Low Profile Ceiling Fan with Light and Remote Control, Flush Mount, Reversible, 3CCT, Dimmable, Quiet, Black Small Ceiling Fan for Bedroom Indoor/Outdoor Use
$79.99 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Universal Ceiling Fan Remote Control Kit, 3-in-1 Ceiling Fan Light Timing & Speed Remote, for Hunter/Harbor Breeze/Westinghouse/Honeywell/Other Ceiling Fan lamp
$14.88 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
SmoTecQ Ceiling Fan Pull Chain, 24-inch Extra Long Extension Cord - Silver
$5.99 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
JSAITEE Ceiling Fans with Lights, 52 Inch Low Profile Ceiling Fan with Light and Remote Control, Flush Mount, DC Reversible Motor, Noiseless, Brown 6 Speeds Ceiling Fan for Bedroom
$79.99 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Akahttbn Ceiling Fan Pull Chain Decorative Ornaments Extension for 13.6 Inches Fan Pulls light and Fan For Ceiling Light Lamp Fan Chain 2 Pcs (Bronze)
$8.99 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Barnakl Ceiling Fan Filters | Activated Coconut Shell Carbon Filter | Easy-Stick Universal Ceiling Fan Air Filters | Unscented Ceiling Fan Blade Filters for Common Household Contaminants, (3-Count)
$21.99 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
52 inch Modern Ceiling Fans with Lights APP/Remote Control, Low Profile Reversible 6 Speeds Ceiling Fan Light for Indoor/Outdoor Patio Bedroom Living Room,Black
$79.99 (as of February 1, 2025 07:59 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)