Lochinvar & A.O. Smith 100110272 Hot Surface Ignitor

The Lochinvar & A.O. Smith 100110272 Hot Surface Ignitor is a critical silicon carbide replacement component engineered for precise ignition in high-efficiency commercial boilers and water heaters. This OEM hot surface ignitor is cross-referenced with part numbers 9004534005 and IG10272, ensuring exact electrical resistance and thermal response for Lochinvar Knight and A.O. Smith Cyclone series units. As a direct-strike ignition source, it eliminates the inefficiencies of standing pilots and provides reliable flame rectification signals to the integrated control board. When troubleshooting ignition failure codes or cracked ceramic insulators, replacing with a genuine 100110272 ignitor ensures the burner assembly maintains its specified BTU output without delayed ignition or nuisance lockouts. This component is designed to withstand the high-temperature cycles common in condensing water heater repair and commercial heating applications.

• Direct OEM Replacement: Matches factory specifications for the Lochinvar 100110272 to ensure proper fitment within the burner gasket profiles.
• Silicon Carbide Construction: Engineered for high thermal conductivity and rapid heat-up times to meet sequence of operation requirements.
• Universal Compatibility: Fits a broad range of A.O. Smith commercial water heaters and Lochinvar boilers, reducing stock requirements on service vans.
• Standardized Connection: Features the correct plug-and-play wiring harness for secure electrical continuity and easier field installation.

Is this ignitor compatible with specific Lochinvar Knight models?
Yes, this hot surface ignitor is the standard replacement for various Knight (KBN/KBN) and Armor models. Always verify the part number against the unit's data plate.

What causes premature failure of the 100110272 ignitor?
Failure is typically caused by surface contamination from skin oils during handling or excessive vibration within the burner housing. Always use gloves during installation.

Does this part include the mounting gasket?
This SKU focuses on the ignitor assembly; however, checking the integrity of the burner door gasket is recommended during any ignition system service.

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.