Description
The Lochinvar & A.O. Smith 100166432 is an OEM replacement circulator pump designed specifically for AWN series water heaters and hydronic systems. Engineered to factory specifications, this pump ensures consistent fluid circulation, optimal heat transfer, and long-term system reliability.
Key Features
- OEM replacement part — engineered to exact Lochinvar & A.O. Smith factory specifications
- Designed for AWN series water heater and hydronic applications
- Ensures consistent hydronic fluid circulation for efficient heat transfer
- Direct drop-in replacement for simplified installation and reduced downtime
- Built for durability in demanding commercial and residential hydronic environments
Application
This circulator pump is the correct OEM replacement for Lochinvar and A.O. Smith AWN series units. Using genuine OEM components maintains system warranty compliance and ensures performance that aftermarket alternatives cannot guarantee. Ideal for HVAC contractors and service technicians performing scheduled maintenance or emergency pump replacement.
Why Choose OEM?
- Guaranteed fit and compatibility with AWN series equipment
- Maintains manufacturer warranty requirements
- Minimizes callbacks and repeat service visits
- Consistent performance under rated operating conditions







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