If it s more than just a dimmer you might keep it in a box for if you can use it later.
Can you wire a ceiling fan to a dimmer switch.
If you locate this switch then both ceiling fans can be wired from one switch.
Connect the blue wire to the red wire.
Connect black fan wire to the black ceiling wire.
An example of this is that the motor in your fan could be damaged and rendered useless.
If you replace with a blank plate wire nut the black from supply to this black and again cap the red.
The new switch does require an additional electrical wire.
Your power supply line the black wire should be feeding both switches and those switches power the fan black or the light blue.
Follow the manufacturer s instructions to hook up your dimmer fan switch at the switch box.
If you replace with a plain switch switch the black wire up to the fan and cap off the red wire on both ends.
By all means you can connect a ceiling fan directly to a dimmer switch but you may run into problems along the way.
To do this method the wire from your wall circuit to your light has to have 3 wires.
A broken ceiling fan motor and a house fire are obviously not ideal outcomes however there is some good news.
With a situation such as this it would be best to have a separate 3 wire cable from each ceiling fan to the switch box just in case the desired method of control will be changed.