Lochinvar & A.O. Smith 100209982 Blower Assembly

The Lochinvar & A.O. Smith 100209982 Blower Assembly is a critical OEM replacement part engineered for high-performance combustion and exhaust management in residential and light commercial gas water heater systems. As a genuine PDV blower assembly kit, this unit is built to the exact specifications required by Lochinvar and A.O. Smith, ensuring a drop-in fit for PR-4040 series and other compatible power direct vent models. For technicians, this eliminates the guesswork and safety risks associated with universal aftermarket blowers that may not meet precise static pressure or CFM requirements.

This inducer blower is essential for maintaining the proper air-to-fuel ratio and ensuring that combustion byproducts are safely exhausted from the heat exchanger. When a hot water heater blower fails, it typically presents with loud bearing noise, limit switch trips due to poor airflow, or a complete failure to initiate the ignition sequence. Replacing the worn assembly with this factory-authorized part helps stabilize system operation and protects the integrity of the heat exchanger by preventing overheating. This HVAC blower assembly is robustly constructed for continuous duty in demanding venting applications.

Key Benefits

• Precision Engineering: Designed specifically for Lochinvar and A.O. Smith systems to ensure correct voltage and RPM matching.
• System Safety: Restores the necessary venting pressure to activate pressure switches and continue the heating cycle safely.
• OEM Reliability: Built with high-grade housing and motors to resist the corrosive effects of flue gases and high-temperature environments.
• Direct Integration: Minimizes field modification time with factory-standard electrical connections and mounting patterns.

Common Questions

How do I know if the 100209982 blower assembly is failing?
Technicians often look for signs such as a rhythmic vibrating noise (indicating unbalanced impellers), a high-pitched squeal (bearing failure), or the water heater failing to bypass the "pre-purge" stage of operation. Always check for 120V at the motor terminals before assuming the motor itself is at fault.

Is this blower compatible with both natural gas and propane units?
Yes, this PDV blower kit is used in specific A.O. Smith and Lochinvar residential models regardless of the fuel type, provided the model number specifies the 100209982 part. It is frequently found on 40-gallon and 50-gallon power-vented tanks.

Does this kit include the gasket?
Most OEM blower kits are designed for complete replacement; however, always inspect the mounting surface for the existing gasket. If the gasket is compressed or torn, it must be replaced to ensure a gas-tight seal at the exhaust transition.

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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.