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This professional-grade boiler replacement part is critical for technicians performing seasonal maintenance or emergency repairs on Weil McLain Ultra series units
While the SPST contact and 1/4 barbed fitting are common
Vibration Reduction: Factory-balanced design minimizes mechanical stress on the condenser fan motor shaft and bearings
providing essential overcurrent protection for downstream controllers and actuators
Williams P323078 Thermo Switch 320788-703 This professional-grade boiler replacement partWhen you're out in the field servicing a customer's HVAC unit, reliability is non negotiable. The Williams P323078 Thermo Switch is a critical OEM replacement component designed specifically for Williams wall furnaces and direct vent heating systems. This high integrity furnace limit switch acts as a safety or operational control, sensing temperature fluctuations to manage blower activity or provide essential circuit protection. Whether you are