The Lochinvar & A.O. Smith 100277784 is a genuine OEM replacement impeller engineered to restore optimal pump performance in compatible Lochinvar and A.O. Smith heating and hot water systems. Designed as a direct drop-in replacement, this impeller ensures proper hydraulic flow characteristics, maintaining system efficiency and reliability.
Product Overview
The impeller is a critical rotating component within a pump assembly, responsible for transferring energy from the motor to the fluid being pumped. Using a genuine OEM part like the 100277784 ensures compatibility, correct fit, and long-term durability — helping to avoid costly system downtime and premature pump failure.
Key Features
- Genuine OEM replacement impeller from Lochinvar & A.O. Smith
- Engineered for precise fit and compatibility with applicable pump assemblies
- Maintains proper hydraulic flow and system efficiency
- Helps restore pump performance to original factory specifications
- Durable construction for long service life in hydronic and water heating applications
- Direct replacement — no modification required
Application
- Compatible with select Lochinvar and A.O. Smith pump assemblies
- Suitable for use in hydronic heating systems and commercial water heating applications
- Ideal for service, maintenance, and repair of existing pump installations
Why Choose OEM Parts?
Using genuine OEM replacement parts ensures your system operates as designed. Non-OEM or aftermarket impellers may not match the precise tolerances required, potentially leading to reduced efficiency, increased wear, or system failure. The Lochinvar & A.O. Smith 100277784 impeller is manufactured to exact specifications, giving you confidence in every installation.








