Replacing a Nutone Bathroom Fan with Light: A Comprehensive Guide
Updating your bathroom's ventilation system can significantly improve comfort and safety. If you're looking to replace your old Nutone bathroom fan with light combo, you've come to the right place. This step-by-step guide will walk you through the process, ensuring you achieve a professional result that enhances your bathroom's functionality and aesthetics.
Understanding Your Nutone Fan with Light
Before you begin, it's crucial to understand the components of your Nutone fan with light. These units typically consist of the following parts:
- Housing (the main body of the fan)
- Motor
- Blades
- Light fixture (usually a bulb and socket)
- Ducting (the vent that leads to the outside)
- Switch housing (where the fan and light controls are located)
Gather Your Tools and Materials
To ensure a smooth replacement process, gather the following tools and materials before you start:

- New Nutone fan with light combo (ensure it matches your existing unit's size and CFM rating)
- Screwdriver (flathead or Phillips, depending on your unit)
- Wire stripper
- Wire connectors (wire nuts)
- Tape measure
- Pencil
- Drywall saw (if you need to cut new holes)
- Drywall screws (if you need to repair drywall)
- Drywall patch (if you need to repair drywall)
Safety First: Turn Off Power and Test
Before you start any electrical work, ensure the power to your bathroom is turned off at the circuit breaker. Once you've turned off the power, test the wires to confirm they're no longer live. Use a non-contact voltage tester for this step.
Remove the Old Nutone Fan with Light
With the power off and the wires tested, you can safely remove your old Nutone fan with light. Here's how:
- Remove the cover grille and light fixture by unscrewing them from the housing.
- Disconnect the wires from the motor and light fixture. Use a wire stripper to expose about 1 inch of wire from each end.
- Remove the mounting screws and carefully lower the fan out of the ceiling. You may need to jiggle it gently to free it from the ducting.
- Remove the old ducting and any mounting hardware from the ceiling.
Prepare the New Nutone Fan with Light
Before installing the new fan, ensure it's the correct size and has the same CFM rating as your old unit. If you're unsure, consult the manufacturer's specifications or measure the existing ducting.

Once you've confirmed the new fan is compatible, follow these steps:
- Connect the wires from the motor and light fixture to the corresponding wires on the new fan. Twist the wires together and secure them with wire connectors (wire nuts). Ensure the wires are fully inserted into the connectors and tightened securely.
- Install the new fan into the ceiling, ensuring it's level and properly aligned with the ducting.
- Secure the fan to the ceiling using the provided screws or drywall anchors.
- Attach the ducting to the new fan and secure it with the provided clamps.
Install the New Fan and Light Switch
With the fan securely in place, it's time to install the new switch housing. If your new fan comes with a different switch type (e.g., pull chain, wall switch, or remote control), you may need to install new wiring or a new switch box.
Once you've ensured the switch housing is compatible, follow these steps:
- Connect the wires from the switch housing to the corresponding wires on the fan and light fixture.
- Secure the switch housing to the wall or ceiling, following the manufacturer's instructions.
- Install the cover grille and light fixture to the fan housing.
Test Your New Nutone Fan with Light
With everything installed, it's time to test your new Nutone fan with light. Turn the power back on at the circuit breaker and flip the switch to the 'On' position. The fan should start running, and the light should turn on.
If everything works as expected, you've successfully replaced your old Nutone fan with light combo. If not, double-check your wiring and connections to ensure they're secure and correct.
Final Thoughts
Replacing a Nutone bathroom fan with light can significantly improve your bathroom's ventilation and lighting. By following this comprehensive guide, you can achieve a professional result that enhances your bathroom's functionality and aesthetics. Always remember to prioritize safety when working with electrical components, and don't hesitate to consult a professional if you're unsure about any aspect of the process.