Lochinvar & A.O. Smith 100304989 Ignitor 319825-402 verify your wiring diagram before

verify your wiring diagram before making the switch

The hinged cover design allows for easy maintenance access while the integrated eight-tumbler security lock prevents tampering with temperature settings

The Honeywell Q4100C9058 is a high-performance Silicon Carbide Hot Surface Igniter engineered for rugged field service replacement in gas-fired furnaces

For technicians managing high-temperature media

This OEM replacement pressure switch prevents hazardous operation by monitoring for blocked vents

Lochinvar & A.O. Smith 100304989 Ignitor 319825-402 verify your wiring diagram beforeThe Lochinvar & A. O. Smith 100304989 Ignitor is a critical OEM replacement part engineered for high output commercial boiler ignition. As a veteran grade hot surface igniter, this component is specifically calibrated for use in Lochinvar Outdoor Crest series boilers, including models OFN(L) 2501 through 6001. This assembly includes the ignitor electrode and a specialized mounting gasket to ensure a gas tight seal against the combustion chamber.