How To Wire A Bathroom Fan With Light And Heater

Because the heat uses a lot more power than the light fan it gets the 2 cable.

How to wire a bathroom fan with light and heater. Rewiring your bathroom circuit to allow fan and light to be operated independently. Connect the blue light wire to the red wire in the 3 cable. Understand that this is a typical wiring scenario however the actual wiring connections may be different for your specific unit. How to install wiring for a bathroom exhaust fan bathroom exhaust fan heater electrical wiring the white neutral wires would be tied together at the wall switch box.

If you re using 14 2 2. And under while medium bath fans work well for bathooms 70 to 100 sq ft. Small bath fans provide adequate bathroom ventilation for 79 sq ft. Remove the 4 inch flexible air duct and then take off any fasteners securing the old fan to a ceiling joist.

Connect the red heat wire to the black wire in the 2 cable. I have a bathroom that has an exhaust fan with a light and heater which are all separate units. Connect the black fan wire to the black wire in the 3 cable. Instead of a blue wire you ll have a white wire with a red stripe.

The first step in figuring out how to install a bathroom fan is cutting a hole based on the size of the fan you need. Combination light heater and fan units can be incredibly handy in smaller bathrooms and other home areas that lack heating and cooling vents. But the majority of fans are wired to work only alongside the bathroom light which can be really wasteful. Connect the black fan cable together with the black light wire and the black switch wire and.

These three in one fixtures work best when wired to a three function switch box allowing for individual control of the unit s functions from a single point. For bathroom over 100 sq ft use a large or exhaust fan to circulate the air. Connect the black wire to the fan switch the blue wire to the light switch and the red wire to the heater switch. A bathroom extractor fan is essential to clear the room of humidity and prevent damp.

An electrician deactivates the electrical circuit before you start the job. Connect all grounds together as always color coding. Using wire strippers peel an inch of insulation from the end of the black and white wires. Leave the electrical cable for use on the new heater.

Step 6 install new bathroom. Light heater fans install in the ceiling at the location of the existing fan and operate using switches on the wall. Connect a light and a fan to a new switch. You ll have to mark this wire at both ends with a marker or tape to reidentify it as a hot conductor.

I want to replace this original set up with a newer all in one bathroom exhaust fan unit that has an exhaust fan with a light and heat functions all built in to one the one unit. Wiring a combo exhaust fan unit electrical question.