Lochinvar & A.O. Smith 100187877 Blower Assembly

As a technician, you know that maintaining precise air-to-fuel ratios is non-negotiable for high-efficiency combustion systems. The Lochinvar & A.O. Smith 100187877 Blower Assembly is a critical OEM component designed specifically for high-efficiency gas water heaters and condensing boilers. This assembly features an integrated Hall Effect sensor, providing the HVAC control board with real-time RPM feedback to ensure optimal airflow regulation and exhaust venting performance. Unlike generic motors, this 100187877 blower motor is engineered to meet the exact static pressure requirements of Lochinvar BTH and A.O. Smith Cyclone series units. Replacing a failing inducer with this genuine OEM part restores the proper induction draft, prevents nuisance pressure switch trips, and ensures the burner assembly operates within manufacturer specifications. When every minute on the job site counts, using a drop-in blower assembly with hall sensor eliminates the need for field modifications and guarantees electrical compatibility with the existing wire harness.

Key Benefits:

• Precise Airflow Feedback: The integrated Hall sensor monitors blower speed continuously to maintain stable combustion efficiency.
• OEM Compatibility: Specifically engineered for Lochinvar and A.O. Smith boilers, ensuring a direct fit without technical workarounds.
• Durable Construction: Built to withstand the high-heat environments of commercial water heating applications.
• System Protection: Accurate RPM sensing helps prevent soot buildup and internal component stress caused by improper venting induction.

Common Questions:

How do I know if I need a 100187877 blower or just a sensor?
If the motor fails to turn or exhibits bearing noise, the entire blower assembly requires replacement. However, if the unit cycles but throws a "fan speed" error code, the Hall Effect sensor within this assembly is likely the culprit.

Is this part compatible with both Natural Gas and Propane units?
Yes, this blower motor manages air induction for both fuel types, though the gas valve and orifice settings remain specific to the fuel source.

Does this assembly include the necessary gaskets?
While this is the genuine blower assembly, it is best practice to inspect and replace the mounting gaskets during installation to ensure a gas-tight seal on the combustion chamber.

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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.