{"product_id":"oem-goodman-defrost-thermostat-for-asz130421ac-heat-pump-0130m00105","title":"OEM Goodman Defrost Thermostat for ASZ130421AC Heat Pump — 0130M00105","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 0130M00105 Defrost Thermostat\u003c\/strong\u003e is the genuine OEM temperature sensor that triggers the defrost cycle on the \u003cstrong\u003eASZ130421AC\u003c\/strong\u003e heat pump. Clamped to the outdoor coil, it closes when coil temperature drops to the frost threshold and opens once the coil warms, telling the defrost board when to reverse the cycle. A failed defrost thermostat causes ice buildup, poor heating, and higher energy bills — this inexpensive part is a common and worthwhile repair.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 0130M00105\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Defrost Control \/ Temperature Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Bi-metal snap-disc, coil-mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Initiates and terminates the defrost cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e ASZ130421AC (Goodman 13 SEER, 3.5-ton heat pump)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman defrost thermostat\u003c\/strong\u003e is calibrated to the exact close\/open set points the ASZ130421AC defrost board expects. Generic snap-discs with the wrong temperature ratings cause short-cycling or ice accumulation. For reliable defrost timing, install the factory-specified part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Disconnect power, unclip the sensor from the coil, transfer the two wire leads, and re-clamp. No refrigerant work is required, but correct coil placement matters for accurate sensing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058309579123,"sku":"GOODMAN-16262","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-defrost-thermostat-for-asz130421ac-heat-pump-0130m00105","provider":"National HVAC Parts","version":"1.0","type":"link"}