Lochinvar & A.O. Smith 100077872 Control 320074-702 the Maxitrol 325 series is

the Maxitrol 325 series is compatible with natural

making it a drop-in replacement for standard heating applications and furnace manifolds

This silicon nitride ignitor serves as a direct 9005989205 replacement

offering an efficient solution for technicians performing HVAC troubleshooting and repairs

and the ST9120C4057 Honeywell platform

Lochinvar & A.O. Smith 100077872 Control 320074-702 the Maxitrol 325 series isThe 100077872 (GSW 52720) is a genuine OEM hot surface ignition (HSI) control specifically engineered for select Lochinvar and A. O. Smith gas fired water heaters. As a veteran grade electronic ignition module, this component manages the critical timing sequences for the ignitor warm up, gas valve actuation, and flame rectification sensing. It operates on a 24 VAC control circuit, integrating high performance microprocessor logic to ensure precise