Whether you are servicing commercial HVAC equipment or upgrading a power distribution panel

ensuring the 120/277V 30A timer maintains accurate settings through most power interruptions

or a humming sound indicating a bad HVAC capacitor or seized bearings

and 30K Direct Vent Wall Furnace models

Enhanced Thermal Protection: Integrated internal sensors prevent motor burnout by cutting power during excessive heat buildup

Lochinvar & A.O. Smith 100173747 Control 318423-701 Whether you are servicing commercialThe Lochinvar & A. O. Smith 100173747 Control is a critical safety component designed for high performance hydronic systems and commercial water heaters. This low water cut off with manual reset (LWCO) serves as a fail safe mechanism, monitoring internal water levels to prevent dry firing. Engineered specifically for Lochinvar boiler systems and A. O. Smith commercial units, the 100173747 ensures the burner circuit is interrupted immediately if a low