S0504B000 Replacement Motor Assembly for NuTone 769RL B Unit - Quiet

Our review of the S0504B000 replacement motor assembly for the NuTone 769RL B Unit finds it best for homeowners or repair technicians who need a direct, cost-effective swap for a failing bathroom exhaust motor. The package includes the fan assembly and the 85315000 ventilation grille lens, and the single biggest reason to buy is straightforward compatibility with NuTone models 757, 769RFT-R01, 769RL, 769RL-R01 and VF707RCN, which avoids cutting or replacing the ceiling housing and restores ventilation performance quickly.

Key Features

• Direct replacement compatibility: Fits NuTone S0504B000 motor assembly applications so users can swap parts without modifying the existing housing.
• Complete kit: Ships with the bracket, motor, blade and the 85315000 ventilation fan grille lens so the visible finish and mounting are handled in one package.
• Power and airflow: Rated at 120 V, 1.0 A, 60 Hz and 70 CFM to move bathroom air and reduce humidity and odors effectively.
• Quiet operation: Runs at about 3.0 sones when installed correctly, which many users find quieter than older original motors.
• Economical repair: Replaces only the motor assembly and lens so there is no need to replace the entire fan housing, saving time and cost.

Who It's For

This replacement motor assembly is for homeowners who have a NuTone 769RL B Unit style fan and want a straightforward repair that restores ventilation without cutting into the ceiling or replacing ductwork. It is also suitable for handy owners or service technicians looking for a kit that includes the fan wheel, bracket and grille lens for a one-stop repair.

It is less appropriate for users who need a universal motor for many different housings or those seeking a high-performance, ultra-quiet upgrade beyond 70 CFM and 3.0 sones; in those cases a different modern blower or a full fixture replacement should be considered.

Pros & Cons

Pros

• Functionality: Restores airflow up to 70 CFM and clears humidity effectively.
• Fit and installation: Many customers report an easy installation that fits the listed NuTone models without modification.
• Value: Replacing the assembly and lens is cheaper and faster than replacing the whole fan housing.
• Fan quality: The replacement motor assembly holds the wheel securely to reduce slippage-related noise for many users.

Cons

• Noise and vibration: Customer feedback is mixed-some report noticeable vibration noise after installation, so results vary by installation and existing housing condition.

Specifications

Part numbers replaced	S0504B000 motor assembly, 85315000 grille lens
Compatible models	757, 769RFT-R01, 769RL, 769RL-R01, VF707RCN
Electrical rating	120 V, 1.0 A, 60 Hz
Airflow	70 CFM
Noise	Approximately 3.0 sones
Wheel size	4-3/4 in x 1-1/14 in
Bracket and lens size	Bracket 9 in x 9 in; lens 12-1/8 in x 10-3/4 in

Our Verdict

The S0504B000 replacement motor assembly is a practical, value-minded fix for owners of NuTone 769RL B Unit series fans who want to regain ventilation without invasive work. It includes the necessary grille lens and matches the original electrical and airflow specs, making it a sensible buy for repairs; just be mindful that noise and vibration outcomes depend on the existing housing and mounting hardware.

Frequently Asked Questions

Will this fit my NuTone 769RL?
Yes, this S0504B000 assembly is specifically compatible with NuTone 769RL B Unit models listed in the product details.

Does the kit include the grille lens?
Yes, the package includes the 85315000 ventilation fan grille lens along with the motor, bracket and wheel.

How loud is the replacement motor?
The motor is rated around 3.0 sones; many users find it quieter than older originals but some installations report vibration-related noise.