Lochinvar & A.O. Smith 100111836 Blower/Shutter Assembly

For veteran HVAC technicians and mechanical contractors maintaining Lochinvar or A.O. Smith systems, the Lochinvar & A.O. Smith 100111836 Blower/Shutter Assembly is the direct performance-matched replacement for the obsolete 9005325205. This integrated 115v Small Blower/Shutter Assembly is engineered to meet the exact load requirements of high-efficiency gas water heaters and commercial boilers. It functions as a critical component in the combustion cycle, strictly regulating the air-fuel mixture by actuating the mechanical shutter to optimize fresh air intake. By minimizing turbulent airflow and preventing excessive drafting during standby cycles, this OEM replacement part maximizes heat transfer efficiency and stabilizes burner ignition. This specific assembly is designed for a precise fit within the small-format chassis of residential and light commercial units, ensuring that HVAC blower assembly static pressure remains within manufacturer tolerances to prevent nuisance lockouts or incomplete combustion cycles. Relying on this genuine Lochinvar water heater part preserves the original equipment's combustion parameters and operational integrity.

• Exact OEM Logic: This is the official updated version of the 9005325205, ensuring seamless electrical and mechanical integration without field modifications.
• Precision Air Regulation: The integrated shutter mechanism prevents heat loss through the flue during off-cycles and ensures smooth combustion airflow during firing.
• 115V High-Torque Performance: The compact blower motor is optimized for consistent RPMs, maintaining the necessary pressure differential for reliable flame rectification.
• Rugged Durability: Constructed to withstand the thermal stress of continuous operation in high-demand residential and commercial water heating environments.

Is this a direct swap for the 9005325205 assembly?
Yes. The 100111836 is the manufacturer-verified successor to the 9005325205. It features the same 115v electrical profile and mounting points for a direct drop-in replacement.

What are the symptoms of a failing blower/shutter assembly?
Technicians typically observe ignition failure codes, pressure switch errors, or visible heavy condensation at the assembly, which indicates a block in the drain coupling or a failure in the vent sequence.

Does this unit include the 115v motor and the shutter?
Yes, this is a complete 115v Small Blower/Shutter Assy, providing both the air-moving motor and the regulation shutter in a single pre-built unit for faster field service.

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.