If the fan has a pair of black wires and a pair of white ones you can wire the light separately from the fan.
Wiring a vent fan with light.
But the majority of fans are wired to work only alongside the bathroom light which can be really wasteful.
If you have one of these you may have fastened the fan and light to separate the switches.
Now they would like to operate both of the same switch.
Combination light fan and heating units can be incredibly helpful in smaller bathrooms and similar areas in your home not served by heating vents.
The compact form and varied functions make them perfect for use with a three function switch box but you ll need to be careful installing the system.
Rewiring your bathroom circuit to allow fan and light to be operated independently.
If you choose to do this pull 3 conductor cable with a white black red and bare wire.
Learn the secrets to running anew exhaust line through the outside wall install a fan and connect the ducting and electrical.