Keep your NuTone 668RP bath fan running quietly with genuine OEM replacement parts from Repair Clinic. The 668RP is a 70 CFM combination exhaust fan and light for bathrooms up to 65 square feet, operating at 4.0 sones with a 4-inch round duct connection. The primary service action on the 668RP is motor replacement, worn motor bearings produce the grinding or squealing noise that drives most 668RP service calls. Repair Clinic stocks the genuine NuTone OEM NuTone bathroom fan motor parts for the 668RP and 668RP-B, along with the fan blade and grille assembly. Browse the NuTone bathroom fan parts catalog filtered by 668RP for the complete parts inventory.
NuTone 668RP Service: Motor Replacement Is the Most Common Repair
The 668RP has a straightforward service universe: the motor, fan blade, and grille are the only serviceable components. Bearing wear from years of continuous operation is the most common cause of noise complaints on the 668RP. Dust accumulation on the fan blade creates imbalance and vibration, cleaning the blade often resolves vibration without any parts expense. The bathroom fan repair help section covers motor replacement for NuTone 668-series models.
Most Replaced Parts on the NuTone 668RP
Motor Kit for the NuTone 668RP
As the motor bearing wears, it produces the grinding or squealing noise that is the primary complaint on this model. The OEM NuTone motor kit for the 668RP includes the motor and mounting hardware. Confirm whether you have the original 668RP or the updated 668RP-B, as motor part numbers differ between production versions.
Fan Blade for the NuTone 668RP
A blade that has accumulated heavy dust runs out of balance, producing vibration and putting additional load on the motor bearing. Cleaning the blade with a damp cloth before replacing the motor often resolves vibration without additional parts expense.
Grille and Light Lens Assembly
The white polymeric grille and light lens attach to the housing with spring clips and pull straight down for removal. A yellowed, cracked, or damaged grille can be replaced without touching the motor or fan blade.
Why Choose Repair Clinic for NuTone 668RP Parts
- Genuine NuTone OEM Motor Kits: Motor kits catalogued separately for the 668RP and 668RP-B production versions — NuTone bathroom fan parts.
- Fan Blade and Grille Available: Complete the 668RP repair with blade and grille options available alongside the motor in a single order.
- Step-by-Step Motor Replacement Guides: Grille removal and motor access instructions specific to the 668RP housing design.
- 365-Day Returns: Return any uninstalled NuTone part within a full year of purchase with no restocking fees.
NuTone 668RP Bath Fan Parts FAQ
What motor fits the NuTone 668RP?
The NuTone 668RP uses a dedicated replacement motor kit. The OEM Broan-NuTone motor kit part S89850000 fits the older production 668RP. The updated 668RP-B production version uses a current motor kit. Confirm whether you have a 668RP or 668RP-B from the housing label before ordering.
Is the NuTone 668RP and 668RP-B the same fan?
The 668RP and 668RP-B are sequential production versions of the same 70 CFM fan-light combination. Many parts including the grille and light socket are shared, but the motor kit may differ between versions.
Why is my NuTone 668RP loud and vibrating?
Noise and vibration on the 668RP are most often caused by a fan blade that has accumulated dust and is running out of balance, or worn motor shaft bearings. Clean the fan blade first. Bearing grinding or squealing requires motor replacement.
How do I replace the motor in a NuTone 668RP?
Turn off the circuit breaker. Remove the grille by pulling straight down to release the spring clips. Disconnect the motor plug and remove the fan blade. The motor unmounts with two or four screws. Reverse the process with the replacement motor kit.
