Calm a shaking ceiling fan by replacing its worn-down box.

We’ll show you step-by-step how to install a ceiling fan box.

Ceiling fansare heavy, and they vibrate.

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Test to confirm the power is off and remove the existing ceiling fixture.

The box must be mounted firmly by attaching it directly to a framing member or using a fan-rated brace.

Replacing a ceiling fan electrical box is a messy job.

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Work carefully to avoid cutting through wires hidden in the ceiling.

Our steps below show you how to do it carefully and successfully.

The box is probably attached to a joist with screws or two horizontally driven nails.

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Force the box loose by hammering a 2x4 into it.

Pry Box

Insert a flat pry bar between the box and the joist.

Pry the ceiling fan box away from the joist.

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You may need to pry out a staple anchoring the cable to the joist.

Work carefully to avoid unnecessary damage to the ceiling.

Disconnect the cable from the box.

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If the box has a cable clamp, remove the locknut.

Tighten Brace and Bolt

Tighten the brace with a wrench or groove-joint pliers.

Attach the U-bolt to the brace and slide the box up through it.

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Install a braced ceiling fan box.

Screw the fan’s mounting bracket directly to a nearby joist.

The plate will be off-center, so you may need a medallion to cover the hole.

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Pancake Box

Older pancake boxes mount with screws driven into a framing member.

Remove the screws and pry out the box.

Carefully cut through the nails with a reciprocating saw.

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