Description
Lochinvar & A.O. Smith 1/2HP 115V Circulator Pump — PUM20008
The Lochinvar & A.O. Smith PUM20008 (SKU 100166406) is a purpose-built circulator pump engineered for dependable performance in residential and light-commercial hydronic heating systems. Rated at 1/2 horsepower and operating on a standard 115-volt single-phase power supply, this pump delivers the consistent water circulation required to maintain efficient heat transfer throughout boiler and hot-water heating loops.
Key Features
- OEM replacement pump designed for Lochinvar and A.O. Smith boiler and water heater applications
- 1/2 HP motor provides robust circulation capacity for hydronic heating loops
- 115V single-phase operation for straightforward installation on standard residential circuits
- Engineered to maintain precise flow rates for optimal system efficiency and comfort
- Direct OEM replacement ensures compatibility and reliable long-term performance
- Compact, durable construction suited for continuous-duty hydronic system operation
Application
This pump is an authorized OEM component for Lochinvar and A.O. Smith boiler systems. It is ideal for use in forced hot-water heating systems, boiler circulation loops, and related hydronic applications where a reliable 1/2 HP, 115V circulator is required. Always verify compatibility with your specific boiler model before installation.
Specifications
- Brand: Lochinvar & A.O. Smith
- Part Number: PUM20008
- SKU: 100166406
- Horsepower: 1/2 HP
- Voltage: 115V
- Application: Hydronic / Boiler Circulator







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