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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15
the McDonnell & Miller 313900 is the direct
which can otherwise lead to pressure drops and compromised boiler safety protocols
Vibration Resistant: Engineered for stability in cooling systems and hydraulic service
This design requires a technician to physically inspect the burner compartment and reset the small button on the back of the part
York S1-025-41321-000 Limit Switch the McDonnell & Miller 313900Designed for professional field installation, the York S1 025 41321 000 Limit Switch is a critical safety component for maintaining thermal integrity in high efficiency furnaces and packaged HVAC units. This genuine OEM replacement part features a precision calibrated thermal disc engineered to open the control circuit at 150F if internal temperatures rise above safe operating parameters, preventing equipment damage and hazardous conditions. Once the
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