Lochinvar & A.O. Smith 100108822 Blower Assembly

The Lochinvar & A.O. Smith 100108822 Blower Assembly is a direct OEM replacement engineered for high-efficiency water heaters and boilers, specifically within the Lochinvar Knight and A.O. Smith Cyclone series. This power venter assembly is critical for maintaining the stoichiometric air-to-fuel ratio required for optimal combustion. It features a high-grade aluminum housing and a precision-balanced blower wheel to minimize vibration and bearing wear. Designed to interface seamlessly with the integrated control board, this 100108822 combustion blower ensures reliable negative pressure for the burner system. Field technicians should verify the intake and exhaust vent lengths to ensure the variable speed motor operates within the factory-specified RPM range. Whether you are servicing a commercial water heater or a high-performance condensing boiler, this assembly provides the static pressure necessary to overcome flue resistance and maintain safe, efficient heat exchanger thermal transfer.

• OEM Compatibility: Exact drop-in replacement for A.O. Smith 100108822 and corresponding Lochinvar blower part numbers, ensuring plug-and-play wiring harness alignment.
• Durable Construction: Heavy-duty motor leads and a corrosion-resistant housing prevent premature failure in high-moisture condensing environments.
• Enhanced Efficiency: Optimized impeller design maximizes CFM output while reducing electrical draw during the pre-purge and post-purge cycles.
• Precise Airflow: Engineered to provide consistent primary air for pre-mix burners, reducing NOx emissions and preventing flame instability.

Common Questions

Is this blower assembly compatible with both natural gas and propane units?
Yes, the 100108822 blower is used in both NG and LP configurations, as it manages air volume; however, always verify the gas orifice and venturi settings during installation.

What are the signs of a failing combustion blower?
Common indicators include persistent "failed to ignite" error codes, excessive bearing noise (grinding), or the pressure switch failing to close due to insufficient static pressure.

Does this include the mounting gaskets?
Technicians should always check the interface seals; it is standard practice to replace the blower-to-burner gasket when installing a new assembly to prevent CO leaks.

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.