The answer to 'when to replace ceiling fan' is that ceiling fans typically need to be replaced every 10-15 years, or sooner if they are no longer functioning properly. Ceiling fans are exposed to a lot of wear and tear over time, with the motor, blades, and other components gradually deteriorating. Signs that it's time to replace a ceiling fan include unusual noises, slower or uneven rotation, and increased vibration. Additionally, older ceiling fans may become less energy-efficient and no longer meet current safety standards.
When replacing a ceiling fan, it's important to choose a model that is appropriate for the size and layout of the room, and to have it installed by a licensed electrician to ensure proper and safe operation.