It s likely because you have an indoor fan that is installed at at damp outdoor location like a screen porch.
Ceiling fan blades drooping.
Because indoor fan blades typically are a composite wood product that will not withstand the changes in humidity on a covered porch they sag over time.
It s important to fix a ceiling fan that is drooping because they shake when turned on and may become a hazard.
Ask a friend to hold the ladder s base for added safety while working on the appliance.
Why are my ceiling fan blades drooping.
The cheap blades are made with processed layered particle sheets sawdust wood byproducts and glue.
Adding heat to the mix accelerates the process.
Inspect each blade and the irons that connect the blades to the fan s hardware.
Ceiling fan blades are held together with a set of screws usually three screws for each blade.
How to fix drooping outdoor ceiling fan blades the usual problem.
Ceiling fan blade material.
How to straighten drooping ceiling fan blades 1.
Not recommended as a safety issue.
Comment to bmasecar above when the warped blades are reinstalled upside down they will not be weighted or balanced properly.
Access the fan with a ladder.
Fixing a drooping ceiling fan blade may be something you have to do if the fan is not working properly.
Heat and humidity but mostly humidity causes ceiling fan blades to droop.
Any obvious cracks or damage to the.
Humidity loosens the bonds in the blades and they droop.
If the fan is run with blades are are not weighted or balanced properly it will probably wobble make noise and eventually come loose from the housing.