Lochinvar & A.O. Smith 100277784 Impeller 30067439-890 Consult the equipment’s electrical rating

Consult the equipment’s electrical rating plate and the NEC for proper application limits

providing a fail-safe for systems without a common wire

Does this switch come with new tubing

System Safety: Acts as a primary fail-safe against cracked heat exchangers and restricted exhaust venting

Designed to meet strict manufacturer specifications

Lochinvar & A.O. Smith 100277784 Impeller 30067439-890 Consult the equipment’s electrical ratingThe Lochinvar & A. O. Smith 100277784 Impeller is a critical OEM replacement part engineered for high recovery commercial water heaters and industrial boiler systems. As the professional grade successor to the legacy 100133556 part number, this centrifugal pump impeller ensures precision fluid dynamics and optimal head pressure within the heat exchanger circuit. Built to withstand the rigorous cycling of hydronic heating equipment, the 100277784