Advanced Diagnostics: Onboard LED indicators help identify system faults and streamline furnace troubleshooting during service calls

Thermal Resistance: Durable silicone construction withstands constant exposure to 121

Key Benefits Extended Service Life: Advanced EPDM compound is lab-tested to provide up to three times the lifespan of competitive inserts in high-cycle vibration environments

reducing the complexity of multi-fan systems

provided health and electrical specs match

Utica-Dunkirk 127000007 Fan Cycling Switch 321042-401 Advanced Diagnostics: Onboard LED indicatorsThe Utica Dunkirk 127000007 Fan Cycling Switch is a critical OEM component designed for high precision head pressure control in Dunkirk and Utica boiler systems. Engineered for reliability in hydronic heating applications, this pressure actuated switch monitors system temperature and pressure to cycle the fan, preventing rapid short cycling and maintaining optimal combustion efficiency. By regulating fan operation, the 127000007 ensures that the heat