Replacing a Nutone bathroom fan cover with a light unit is a practical home improvement project that enhances both function and aesthetics. Whether your current cover is damaged, outdated, or you simply need to add illumination to a dim space, this guide walks you through the process step-by-step. Understanding the specific model of your Nutone fan ensures you select a compatible cover with integrated lighting.
Tools and Materials You Will Need
Preparation is key to a smooth installation, so gather these items before starting. Having the right tools minimizes downtime and prevents mid-project trips to the hardware store. A careful setup ensures safety and efficiency throughout the task.
- Flathead and Phillips screwdrivers
- Voltage tester or non-contact circuit finder
- Step stool or sturdy ladder
- New Nutone fan cover with light
- Work gloves and safety glasses
- Small pieces of painter’s tape (for marking wires)
Safety First: Power Down the Circuit
Electrical safety is the top priority before touching any wiring in your bathroom. The fan/light unit is typically connected to a home circuit that must be de-energized to prevent shocks. Rushing this step can lead to serious injury, so verify the power is off.

How to Turn Off Power
- Locate your bathroom’s circuit breaker panel.
- Identify the breaker labeled “Bathroom Fan,” “Vent,” or a similar designation.
- Switch the breaker to the “Off” position.
- Test the fan switch and light to confirm power is cut before proceeding.
Removing the Old Nutone Fan Cover
With the power off, you can safely remove the existing cover to access the wiring and mounting mechanism. Take note of how the old unit is configured, as this will guide your installation of the new cover. Handling the removal carefully prevents damage to the drywall or ceiling housing.
Position your ladder securely under the unit. Use a screwdriver to remove the screws holding the cover to the motor housing. Gently lower the cover while supporting its weight, and observe how the internal wiring is connected. This visual reference is invaluable when installing the new unit.
Examining the Wiring Configuration
Bathroom fan light combinations usually involve a fan motor and a light kit, each connected to separate switches or combined into one switch. Identifying your wiring setup—standard or with a timer/switch—prevents confusion during installation. Matching the new cover’s wiring to your existing configuration is essential for proper function.

| Setup Type | Description | Color Coding (Typical US) |
|---|---|---|
| Basic Fan & Light | Fan and light controlled by one switch | Black (hot), White (neutral), Ground |
| Separate Controls | Fan and light have independent switches | Multiple hot wires (often black and red), Neutral |
| With Timer | Light or fan automatically turns off after set time | Various configurations; consult manual |
Installing the New Cover with Light
Mounting the new Nutone cover requires aligning the housing with the ceiling junction box and securing it firmly. The new unit will likely have wiring caps and mounting screws included. Ensure the junction box is rated for the weight and type of the fan/light combination to avoid sagging or detachment.
Attach the mounting bracket or framework to the ceiling box first. Carefully lift the new cover into place, aligning the screw holes. Insert the provided screws through the cover and into the bracket, tightening them evenly. This secures the unit and creates a flush, professional appearance against the ceiling.
Wiring the Unit Correctly
Connecting the wiring correctly is the technical core of the installation. Each wire must be matched to its corresponding terminal to ensure the fan and light operate as intended. Using wire nuts properly and tucking wires neatly into the ceiling prevents shorts and maintains a safe installation.
Typically, you will connect black to black (hot), white to white (neutral), and bare copper or green to ground. If your new unit has a separate ground wire, secure it to the grounding screw in the junction box. Double-check all connections before restoring power to eliminate risk.
Testing the Installation
After the cover is secured and wired, you can restore power and test the new Nutone bathroom fan cover with light. This final phase confirms that both the fan and the light function correctly and that there are no wiring issues. Observing the fan’s airflow and the light’s brightness verifies a successful installation.
Turn the circuit back on at the breaker. Operate the wall switch to test the fan, the light, and any dimmer or timer functions. Listen for unusual noises indicating misalignment or loose components. If everything operates quietly and effectively, the project is complete, and your bathroom now has improved ventilation and illumination.