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Williams 7810 Fan Motor

Williams 7810 Fan Motor

The Williams 7810 Fan Motor is a critical replacement component engineered for 115V HVAC applications, specifically designed to restore original equipment performance in Williams furnace assemblies. This 115v fan motor features a precision-machined 5/16" shaft, ensuring a secure fit with blower wheels and fan blades. As the direct OEM-spec replacement for P108100A and A0408B2772, the 7810 eliminates the guesswork often associated with universal motors that require field modifications. For technicians servicing wall furnaces or air handlers, this motor provides the necessary torque and RPM to maintain static pressure and design airflow. Using a drop-in Williams replacement motor ensures the electrical load matches the circuit board’s requirements, preventing premature component failure. This HVAC blower motor is built for continuous duty cycles, providing reliable thermal protection and vibration-free operation in residential or light commercial settings.

Key Benefits for Technicians

  • Direct OEM Interchange: Replaces factory parts P108100A and A0408B2772 without bracket modifications.
  • Precision Shaft Lead: The 5/16" diameter shaft is engineered for high tolerances to prevent blower wheel wobble.
  • Electrical Compatibility: Optimized for standard 115V furnace motor circuits, ensuring stable amp draw during peak operation.
  • Rugged Housing: Designed to dissipate heat effectively in enclosed cabinet environments, extending the life of the internal windings.
  • Quiet Operation: Balanced rotor assembly minimizes harmonic noise and vibration across the ductwork.

Common Installation Questions

Is the Williams 7810 a direct replacement for my existing fan motor?
Yes, the 7810 is the verified replacement for part numbers A0408B2772 and P108100A. Always verify the shaft diameter and voltage before installation to ensure a proper match with your specific unit.

What are the benefits of using an OEM-spec motor over a universal alternative?
Using the Williams 7810 ensures that the mounting points, shaft length, and electrical characteristics align perfectly with the original system design, maintaining the unit's UL listing and airflow efficiency.

Does this motor require a specific capacitor for installation?
Technicians should verify the motor nameplate during installation; however, as a direct replacement, it is designed to integrate with existing Williams furnace control configurations.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

QUESTIONS & ANSWERS

Ask a Question

  • My Williams P108100A motor 7163-7132 has a 5/16"dia shaft. What do you suggest?

    7810 is the direct replacement for P108100A.

  • Hello, We are a small non-profit with a burned out motor. In the rare circumstance where we receive a motor that has to be returned immediately for a valid reason, WHAT IS THE RETURN POLICY. Thank you.

    Hi, you can return the motor within 30 days. Restocking fee may apply depending on the reason of return and manufacturer. For details please see our return policy page listed below. Thank you. https://www.gsistore.com/pages/shipping-and-return-policy

  • Does P108100A braces compares with 7810?

    The 7810 is the direct replacement for P108100A.

  • What RPM is the Williams 7810 motor? I need a replacement for my p108100a

    7810 is the correct replacment to P108100A according to Williams. Williams does not state the RPM on this motor. We checked the label on the motor and there is no RPM info there as well. Looks like Williams doesn't want people to know so they cannot cross it to aftermarket ones.