Lochinvar & A.O. Smith 100108844 Damper

The Lochinvar & A.O. Smith 100108844 is a professional-grade 6" AL Base Style Flue Damper engineered to maintain high-efficiency standards in residential and commercial heating systems. Serving as the direct, updated version for 9002537205, this motorized component is essential for modern HVAC technician workflows, ensuring that energy is preserved by preventing standby heat loss through the vent pipe when the burner is inactive. Constructed with a durable aluminum base, this automatic vent damper is designed for a seamless fit into existing Lochinvar water heater and A.O. Smith boiler flue gas emission systems.

When performing a flue damper replacement, this OEM part provides the reliability required for combustion air control and safety sequence verification. The integrated drive motor operates to open the vent pipe before ignition, ensuring proper drafting, and closes tightly post-cycle to maximize thermal retention. Its compatibility with legacy systems makes it a go-to replacement HVAC part for contractors managing high-efficiency hydronic systems. This unit supports specific Category II and Category IV venting requirements where precise exhaust gas regulation is critical for system longevity and code compliance.

• Direct OEM Compatibility: Engineered as the official successor to 9002537205 for precise mechanical fit.
• Thermal Efficiency: Restricts airflow during off-cycles to significantly reduce standby heat loss.
• Robust Construction: Features a corrosion-resistant aluminum base for long-term service in high-moisture exhaust environments.
• Safety Interlock Ready: Designed to integrate with standard equipment control boards to ensure safe burner operation.

Is the 100108844 compatible with my older boiler?
This part is the designated replacement for the 9002537205. Always verify the specific model number of your unit, but this 6" drive typically supports 400-500 series Lochinvar and A.O. Smith commercial water heaters.

Does this damper include the drive motor?
Yes, as a complete Al Base Style Flue Damper assembly, it includes the drive mechanism necessary for automatic operation.

What are the symptoms of a failing flue damper?
Technicians often encounter fault codes related to "Flue Damper Switch Open" or find the burner failing to ignite because the end switch in the damper was not reached, preventing the ignition sequence for safety.

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.