How to Install and Wire a Bathroom Exhaust Fan with Light and Heater


By Dave Rongey - Summary:

Electrical Wiring for Bathroom Exhaust Fan Combo Unit and Switches: Dedicated Circuit for the Exhaust Fan and Heater, Identify the Circuit Power Requirement, Wiring Method for a Combo Exhaust Fan, Cables and Neutral Wire Connections.


Wiring a Combo Exhaust Fan Unit

Electrical Question: I have a bathroom that has an Exhaust Fan with a Light and Heater which are all separate units.

This electrical wiring question came from Mike, in Roanoke, Virginia.

Additional Comments: Love to hear all the audios on your website, Thanks for all the help!

Dave’s Reply:
Thanks for your electrical wiring question Mike.

Application: Wiring for Bathroom Exhaust Fan.
Skill Level: Beginner to Intermediate, best installed by a licensed electrical contractor.
Tools Required: Basic Electricians Pouch Hand Tools, sheet rock saw, stud locating sensor, a non-conductive ladder, drop cloth and a Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with tools and the access to the attic area above the bathroom for the new exhaust fan.
Precaution: If there is an existing circuit then it should be identified, turned OFF and Tagged with a Note before working with the wiring.

Electrical Wiring for Bathroom Exhaust Fan Combo Unit and Switches

Bathroom Exhaust Fan Wiring

The bathroom exhaust fan combo units that have the a built in heater and light require a special circuit and careful attention when wiring the wall switches with the process as described in this example

Wiring a Dedicated Circuit for a Bathroom Fan and Heater

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