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Ships within 48 hours · Estimated delivery Oct 31 - Nov 5
This HVAC circuit board replacement is built to original factory specifications
Enhanced Safety Protocols: Continuous flame monitoring and hardware-level safety checks for blocked drains and low gas pressure
making it a direct swap for field repairs
maintaining optimal static pressure and heat exchanger efficiency
Industrial Grade Build: Features a robust stake hub and steel spider assembly to ensure long-term balance and reduced bearing wear
Lochinvar & A.O. Smith 100109948 Ignitor 319852-301 This HVAC circuit board replacementThe Lochinvar & A. O. Smith 100109948 Ignitor is a high performance silicon carbide hot surface ignitor engineered specifically for precision ignition in residential and commercial heating systems. This 120V HSI replacement serves as the direct updated version for the legacy 768A 211 model, ensuring reliable flame sensing and consistent ignition cycles under high demand conditions. Designed to meet the exact specifications of original equipment
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