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Constructed with a high-strength aluminum die-cast housing
technicians often use a 2-pole contactor as an upgrade for a 1-pole unit
This assembly is engineered to withstand the thermal stressors found in commercial and residential air handlers
Replacing fouled or corroded furnace burner tubes with this factory-authorized part restores system efficiency and promotes appliance longevity
For technicians performing a gas burner transformer replacement
Lochinvar & A.O. Smith 100109976 Control Board 319847-401 Constructed with a high-strength aluminumThe Lochinvar & A. O. Smith 100109976 Control Board is a critical integrated electronic control module designed for high efficiency boilers and commercial water heaters. This OEM replacement part acts as the central microprocessor, managing ignition sequences, flame proving, and safety limit monitoring. It is a direct successor to the AO Smith 9004600205, ensuring backward compatibility with legacy systems. The addition of the cable assembly harness
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