Lochinvar 100332753 Air Metering Valve Motor Actuator Replacement Part

The Lochinvar 100332753 is an OEM replacement motor for the air metering valve assembly used in Lochinvar and A.O. Smith commercial condensing boilers. This actuator motor drives the air metering valve, which precisely regulates combustion air flow during boiler operation to maintain the correct fuel-to-air ratio for efficient and stable combustion.

Key Features:

• OEM Lochinvar / A.O. Smith replacement part — ensures proper fit and function
• Drives the air metering valve actuator to control combustion airflow
• Maintains correct fuel-to-air mixture for efficient boiler firing
• Designed for use with Lochinvar Crest series commercial heating boilers
• Includes internal slide switch within the actuator assembly for position feedback to the control board
• Direct drop-in replacement — no modification required

A failed or malfunctioning air metering valve motor can trigger fault codes such as "Air Metering Valve Stuck Closed" or "Air Metering Valve Stuck Open," resulting in boiler lockout. Replacing the motor with this genuine OEM part restores proper valve operation and prevents combustion inefficiency or flame instability. Always verify wiring connections at the control board before replacing this component.

Also sold as: A.O. Smith 100332753