Lochinvar & A.O. Smith 100166323 Pump

The Lochinvar & A.O. Smith 100166323 is a high-performance 1/6HP 3400RPM circulating pump motor designed for specific hydronic heating and water heating applications. This 120V component is engineered to maintain high-velocity flow rates within Lochinvar Knight and Armor series boilers, as well as various A.O. Smith commercial water heaters. As a "less volute" assembly, this part is an exact drop-in replacement for PUM10000, allowing technicians to utilize the existing pump housing, which reduces system downtime and material costs. The 3400 RPM motor ensures optimal thermal transfer and head pressure management, making it essential for maintaining HVAC system efficiency. Built for continuous duty in demanding commercial environments, this motor facilitates precise hydronic circulation and is crucial for preventing temperature stratification in large-scale domestic hot water systems. This OEM replacement part ensures full electrical and mechanical compatibility with original manufacturer specifications.

• Direct Cross-Reference: Identical to Lochinvar PUM10000 for reliable field service and fitment.
• Optimized Performance: Operates at 3400 RPM to meet the specific pump head requirements of commercial boilers.
• Simplified Installation: "Less volute" design allows for a motor-only swap, preserving the integrity of existing plumbing connections.
• Electrical Compatibility: Standard 120V configuration integrates seamlessly with existing furnace and boiler control boards.

Is the 100166323 compatible with my current pump housing?
Yes, this centrifugal pump motor is designed to bolt directly onto the existing volute of PUM10000 series assemblies, provided the housing is free of debris and structural damage.

Can this motor be used for potable water applications?
This component is frequently utilized in A.O. Smith commercial water heaters; however, always verify the specific model's fluid handling requirements against the manufacturer’s technical data sheet.

Does this include the impeller and gaskets?
This SKU is the motor assembly. When performing a pump motor replacement, it is industry best practice to inspect the impeller and replace all seals to prevent leaks under high-pressure conditions.

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.