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The Goodman 0130M00105 Defrost Thermostat is a genuine OEM replacement component designed for the ASZ130181AG heat pump. This defrost thermostat mounts to the outdoor coil and senses coil temperature, signaling the defrost control board to initiate a defrost cycle when ice accumulates on the outdoor unit during heating operation. A failed defrost thermostat is a common cause of iced-over coils, reduced heating capacity, and short-cycling in cold weather.
This is a true OEM Goodman part, engineered to the exact temperature thresholds specified for the ASZ13 platform. Generic aftermarket thermostats may use different open/close set points, which can cause premature or delayed defrost cycles and uneven heating performance. Choosing OEM guarantees correct defrost timing and preserves compressor life.
Easy to Moderate. Replacement involves disconnecting power, removing the service panel, unclipping the sensor from the coil, and swapping the wire connectors. Most technicians complete this in 20-30 minutes. Always disconnect power at the disconnect box before servicing.