Description
The Lochinvar & A.O. Smith 100145007 is an OEM fan kit engineered specifically for the KBN500 boiler series. Designed as a direct factory replacement, this kit restores proper combustion air delivery and venting performance to keep your boiler operating at peak efficiency and within manufacturer specifications.
Product Overview
When the combustion fan assembly on a KBN500 boiler fails or degrades, system efficiency drops and safety controls may lock out the unit. The 100145007 Fan Kit provides a complete, ready-to-install solution using genuine Lochinvar & A.O. Smith components — eliminating guesswork and reducing installation time in the field.
Key Features
- OEM replacement fan kit designed specifically for the KBN500 boiler model
- Ensures correct combustion airflow and proper venting operation
- Direct factory-matched fit — no modifications required
- Restores manufacturer-rated efficiency and performance
- Supports reliable burner ignition and flame stability
- Helps prevent nuisance lockouts caused by inadequate combustion air
Compatibility
- Designed for use with the Lochinvar & A.O. Smith KBN500 boiler series
- Consult the equipment service manual or contact your distributor to confirm compatibility before installation
Installation Notes
This fan kit should be installed by a qualified HVAC/R technician or licensed boiler mechanic. Always disconnect power and follow all applicable local codes, manufacturer service instructions, and safety procedures prior to servicing combustion equipment.







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