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Its compact 3/4 inch NPT connection and robust ceramic insulation on the probe make it a standard choice for tech-heavy hydronic maintenance
Listen for a distinct "click"
Common Questions What is the maximum capacity of the B1H-75
Technical Specifications & HVAC FAQ
P74AB-1 is identical to P74AB-1C
Lennox 15P86 Defrost Sensor 340155-7026 Its compact 3/4 inch NPTThe Lennox 15P86 Defrost Sensor is a critical thermistor assembly engineered for precise outdoor coil temperature monitoring in Lennox heat pump and refrigeration systems. As a veteran tech, you know that accurate data feedback is the frontline defense against restricted airflow and compressor strain. This Lennox 15P86 sensor features an integrated wire harness for seamless heat pump defrost control, sending high fidelity signals to the control board