Lochinvar & A.O. Smith 100165937 Ignitor 321894-709 including the necessary machining for

including the necessary machining for secure fan blade and pulley mounting

What happens if the burner gasket is not seated properly

including heat pumps (without auxiliary heat) and 24V or millivolt applications

Dynamic Speed Control: Proportional voltage regulation ensures seamless motor speed transitions rather than abrupt on/off cycling

OEM Compatibility: Guaranteed fit for Lennox 74H0101

Lochinvar & A.O. Smith 100165937 Ignitor 321894-709 including the necessary machining forWhen you're troubleshooting a lockout on a Lochinvar Knight or Squire series, the Lochinvar & A. O. Smith 100165937 Ignitor is often the first component to inspect. This 120V silicon carbide hot surface ignitor is a critical OEM replacement part designed for precision timed ignition cycles in high efficiency gas fired boilers and water heaters. It features a durable ceramic block base and an M shape element optimized for rapid heat up and reliable