Constructed from industrial-grade steel to resist warping under high-cycling thermal loads

and emulsions from compressed air systems

Enhanced Efficiency: Delivers up to 30% more Energy Efficiency Ratio (EER) than legacy platforms for lower operational costs

The S1-FHM3587 is the current technical successor for the S1-024-32082-000

Lochinvar & A.O. Smith 100187881 Ignitor Assembly 320788-703 Constructed from industrial-grade steel toThe Lochinvar & A. O. Smith 100187881 Ignitor Assembly is a critical OEM replacement part engineered for high efficiency commercial gas water heaters, specifically the BTH, SUF, and HCG series. As a veteran grade spark ignitor assembly, this component ensures precise ignition timing in 300, 400, and 500 MBH models, as well as 200 201 series units. When troubleshooting water heater ignition failure, the 100187881 is the primary solution for restoring