How to find Broan exhaust fan model number?
For a Broan exhaust fan like model N722, the model number is typically printed on a rating label or stamped into the metal housing. We recommend checking the fan housing (inside the grille area) first; that is the most common location.
Turn off power at the breaker, then remove the grille so you can see the housing. Check these common spots:
- Inside the fan housing near the motor plate or wiring compartment
- On the side wall of the metal housing (label or stamped text)
- Near the damper or duct connection area
- On the back side of the grille (less common)
- On the wall control plate area if your unit uses a wall control (sometimes lists series info)
- Switch the fan off, then shut off the circuit breaker.
- Pull down the grille and unplug the light (if equipped).
- Use a flashlight to scan the housing for a white/silver label.
- Write down the full model number exactly as shown (letters, numbers, and any dashes).
- If the label is dirty, wipe it gently; do not remove it.
| Label item | What it helps with |
|---|---|
| Model number | Matching the correct parts list for your fan |
| Series/type | Confirms the fan family and feature set |
| Electrical rating (volts/amps) | Verifying safe replacement parts |
Broan fans often have similar-looking grilles and housings across multiple series. Using the exact model number prevents ordering the wrong motor plate, damper, or mounting hardware.
If you are already on the N722 parts list, these are examples of model-matched parts you can compare against what you see in the housing:
For help confirming you have the right number before ordering, use our guide: how to find your appliance model number (and what it means for parts).
Last updated: February 2026
What are the parts of a fan?
For the Broan N722 designer series fan and light, the main parts include the fan motor assembly, blower wheel, housing, damper (backdraft flap), grille and mounting hardware, plus the wall control components. These parts work together to move air, reduce noise, and prevent outside air from flowing back in.
- Motor and motor plate: spins the blower wheel to create airflow (see motor plt S97017066).
- Blower wheel: the “fan blade” inside the unit that actually moves air (see room air conditioner blower wheel 99020002).
- Housing: holds the motor and wheel, and connects to the duct path (see housing 97008918).
- Damper: helps stop backdrafts when the fan is off (see damper 97003932).
- Mounting bracket and frame: supports the unit in the ceiling or wall opening (see mounting bracket 98003036).
- Wall plate: covers the wall control opening for a finished look (see wall plt 99090676).
| Part you notice | What it typically affects | Common symptom when it fails |
|---|---|---|
| Damper | Backdraft control, airflow restriction | Rattling, weak airflow, cold air coming back |
| Blower wheel | Air movement | Humming but little airflow, vibration |
| Motor plate | Motor support and alignment | Excess noise, rubbing, intermittent operation |
| Mounting bracket | Stability and vibration control | Shaking, buzzing, loose grille |
- Turn power off at the breaker before inspecting.
- Listen: rattling often points to the damper or loose mounting.
- Feel airflow at the grille: weak airflow often points to the blower wheel buildup or a worn motor.
- Check for vibration: look for a loose bracket, frame, or hardware.
- If you’re doing electrical checks, use a meter and safe testing practices (see how to use a multimeter to test electrical parts video).
Knowing the major parts helps you troubleshoot faster and order the right Broan N722 replacement part the first time, especially for common complaints like noise, weak ventilation, or backdraft.
Last updated: February 2026
What is the average lifespan of N722?
A Broan N722 designer series fan and light typically lasts 10 to 15 years with normal bathroom ventilation use and routine cleaning. Lifespan is driven most by dust buildup, moisture exposure, and how freely the blower spins.
- Dust and lint buildup on the blower wheel and grille (raises load and heat)
- Moisture and corrosion from frequent showers and poor ducting
- Backdrafts from a stuck or missing damper
- Vibration from loose mounting or a worn retaining ring
- Electrical stress from loose connections or a failing wall control
- Turn power off at the breaker; remove and wash the grille.
- Vacuum the housing and motor area; keep insulation out of the fan.
- Confirm the duct is clear and the damper opens and closes freely.
- If the fan gets noisy or airflow drops, inspect the blower wheel for wobble and buildup.
| Symptom | Most common cause | Typical fix |
|---|---|---|
| Loud humming, slow start | Motor wear or drag from buildup | Clean; if unchanged, replace worn components |
| Rattling or vibration | Loose hardware or worn ring | Tighten; replace ring if needed |
| Poor airflow | Clogged duct, stuck damper, dirty wheel | Clear duct; clean or replace parts |
If the fan is otherwise in good shape, replacing a few wear items can extend service life:
- Damper 97003932 (helps prevent backdraft and improves airflow)
- Room air conditioner blower wheel 99020002 (restores airflow and reduces vibration)
- Retaining ring 99390076 (helps keep rotating parts secure)
A fan that is near the end of its lifespan usually runs hotter, gets louder, and moves less air. That leads to more moisture staying in the room, which increases odors and humidity problems.
Last updated: March 2026
