If this is the case you ll likely have to call the fan s manufacturer because most home improvement stores do not carry replacements.
Balance attic fan blades.
It may be due to a low quality ceiling fan but it could also be due to a balancing issue.
Mark the blades with tape.
That s not what balance is.
In such cases either balance them out or replace the blades entirely.
Ceiling fan balancing kits are usually packed in with a new ceiling fan but they can also be purchased separately.
That s a geometry problem probably because you misaligned it when reassembling it wasn t that way before.
Balance is a whole nother thing.
Kits come with a plastic clip and up to five small weights often with an adhesive backing to make them easy to attach to the fan blades.
Now i suspect the other two motor replacements burned up due to the weak skinned original fan blade was out of balance when i tried to reshape them back to the original pitch.
In fact this is the first time the attic fan ran quietly since original installation.
Balance does not require symmetry in fact making the fan blades the right kind of asymmetrical makes them quieter.
If your fan is belt drive it should work if you can remove the belt.
This only works on free spinning direct drive fans where the shaft can be placed horizontally at least for the balance procedure.
Before attempting to balance the ceiling fan visually inspect all of the blades and make sure that none of them are warped or damaged.
Follow these steps to troubleshoot the issue and get a fan back on an even keel.
This is something that can occur even in regular ceiling fans as a consequence of regular use.
Balancing a ceiling fan.
If the fan makes a constant metal clanking noise in all probability the fan blades are imbalanced.
Restore your fan to its smooth running days of old before you wear down the moving parts.
If one of the blades is damaged it may need to be replaced.
No special tools no removing blades no drilling no weights and it achieves an excellent balance.
Clean the fan and blades.
Turn off the fan.
Tighten the screws on the blade brackets.
This replacement fan blade will not bend if that is important to you.