Broan & NuTone Range Hood Motor Assembly Parts — Models & Compatibility

If your Broan or NuTone range hood fan stopped working or sounds like it's grinding itself to death, you're likely dealing with a failed motor assembly. This is the heart of your ventilation system — when it goes, your hood becomes an expensive light fixture. The 97012248 motor assembly replaces several Broan part numbers including AP4527731, 99080492, and BP17, fitting dozens of models across the 40000 and F series lines.

Is This the Right Part for Your Model?

Check the model number on your range hood — it's usually on a sticker inside the hood itself, visible when you remove the grease filters. Most Broan units from the 40000 series (like 40000-B through 40000-H) and the F40000 series use this exact motor assembly. If your model starts with 40000, 42000, or F40, there's a strong chance this is your part.

About This Replacement Motor Assembly

This motor assembly fails for a simple reason: constant heat and grease exposure wear down the bearings over 10-15 years of use. One owner of a 12-year-old Kenmore hood described how "the motor had simply died" — the fan wouldn't spin at all. Another common symptom is excessive noise as the bearings start to seize. The good news? This is one of the easiest appliance repairs you'll ever do. As one DIYer put it: "I used a socket to remove bolts, disconnected power cable and pulled assembly out. 20 minutes top for repair, saved at least $90 service charge."

What You'll Need

• Screwdrivers (Phillips and flathead)
• Socket set (typically 1/4" or 5/16" for mounting bolts)
• 5-20 minutes of your time

Compatible Broan & NuTone Models

This motor assembly works across multiple Broan and NuTone series. The most common installations include the 40000 series (various suffix letters), 42000-K and 42000-L models, and the extensive F40000 family including F402401, F402402, F403001, F403002, and many more. If you've got a Broan hood from the last 15 years that's stopped exhausting air, this is likely your fix.

Common Failure Symptoms

You'll know it's time for this part when your hood fan either runs extremely loud with grinding or squealing noises, or doesn't run at all when you flip the switch. Sometimes the fan will start slowly and struggle to reach full speed. The motor assembly typically fails due to wear and tear from years of heat exposure and grease buildup, causing the fan to stop working or run weakly.

Why This Part Fails

Range hood motors live in a hostile environment. They're constantly exposed to heat rising from your cooktop and grease particles that work their way into the motor housing despite your filters. Over time, the motor bearings accumulate gunk and lose lubrication. Eventually, the friction becomes too much and the motor either seizes up completely or starts making that awful grinding noise that tells you it's on its last legs.