Stop fighting a sluggish or dead bathroom exhaust fan. The NBK Parts 21023 is a purpose-built, drop-in replacement motor for popular Broan NuTone ventilation units, restoring full airflow and humidity control without the cost of replacing the entire fan assembly. Thermally protected, 120V-ready, and backed by a 2-year manufacturer warranty.
When a bathroom exhaust fan stops moving air effectively, the motor is almost always the culprit. Replacing just the motor instead of the entire unit saves time and cost, provided you get an exact-spec replacement. The NBK 21023 matches the original electrical and mechanical profile of the Broan NuTone OEM motors it replaces, so there is no rewiring, no adapter brackets, and no guesswork.
Consistent 1550 RPM output keeps your fan pulling the CFM it was designed to deliver, reducing humidity buildup that leads to mold, mildew, and peeling paint. The thermally protected winding shuts the motor down safely if it overheats, preventing damage to the fan housing or surrounding structure.
Replaces Broan NuTone part numbers 100600, 5KSM84DFK211AP, and 71731998 with no modifications required.
Built-in thermal overload protection shuts the motor down safely if operating temperature exceeds safe limits.
Maintains rated fan speed to deliver the CFM your ventilation unit was designed for, keeping humidity and odors in check.
Backed by a limited 2-year manufacturer warranty from NBK Parts for defect-free performance.
The NBK 21023 is a verified cross-reference for the following Broan NuTone OEM motor part numbers:
Always confirm your existing motor's part number before ordering. The number is typically printed on a label affixed to the motor body or stamped into the motor housing.
Replacing a bathroom exhaust fan motor is a straightforward DIY task for most homeowners comfortable with basic electrical work. General steps for compatible NuTone units: