If not replace it with a fan rated junction box and a fan brace between the ceiling joist to help support the fan s weight.
Install ceiling fan box between joists.
Place the open side of the ceiling junction box that came with an expandable brace kit against the ceiling where you want the box installed.
If it s suspended from a bar you may have to take off a metal plate to unscrew the box.
Inspect the existing junction box to make sure it s rated for ceiling fans.
Here s the simple steps we followed to install the ceiling mount box.
A standard unsupported circuit box doesn t have enough strength to hold a ceiling lamp.
A brace between the joists strong enough to support a fan.
There should be an inscription on the ceiling fan box to indicate this.
How to install a ceiling fan box between joists.
How to install a ceiling fan https youtu be 8ri8hh624mm.
To hang your fan where there is an existing fixture but no ceiling joist you can install 2x blocking between ceiling joists or alongside a ceiling joist and then mount the fan box to the blocking.
Cut a 2x4 to this length and attach a new fan rated outlet box to the midpoint using deck screws.
Make the location between joists not on a joist.
If it s nailed to a joist pry it free with a flat bar.
Remove the old electrical box from the ceiling.
The family handyman editor in chief gary wentz will show you how to remove an old light and install a ceiling fan brace so you can properly install a new c.
Or you may need to install a joist hanger bar as shown.
How to install a ceiling fan between joists.
Home ceiling fans need the proper support to be safe for use.
The box is usually metal.
The new metal ceiling fan box came with a right angle bracket for mounting from the side.
Then pry the bar from the joists.
With the 2x4 and box assembled hold them between the joists so the outlet box presses against the back of the ceiling.