Amana-Goodman 10030912 Defrost Sensor L55°F-25°F

The Amana-Goodman 10030912 Defrost Sensor L55-25F monitors evaporator coil temperature, signaling control boards when frost accumulation requires removal in heat pump systems. A thermistor element changes electrical resistance based on detected temperatures, initiating defrost cycles and terminating them upon reaching it. Mounted directly onto outdoor evaporator coils within heat pumps, this component ensures timely ice elimination during cold-weather heating operation in HVAC systems. The sensor prevents airflow restriction while maintaining consistent warmth delivery, optimizing energy consumption without compromising indoor comfort across the coldest conditions.