{"product_id":"oem-goodman-150-f-primary-limit-switch-for-gch950904cxae-20162903","title":"OEM Goodman 150°F Primary Limit Switch for GCH950904CXAE — 20162903","description":"\u003ch2\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman 20162903\u003c\/strong\u003e is a genuine OEM primary high-limit switch rated at \u003cstrong\u003e150°F\u003c\/strong\u003e for the \u003cstrong\u003eGCH950904CXAE\u003c\/strong\u003e gas furnace. Mounted on the heat-exchanger bulkhead, it senses supply-air temperature and shuts off the gas valve if the furnace overheats — typically from a dirty filter, blocked airflow, or a failing blower. It automatically resets once temperatures return to a safe range, protecting the heat exchanger from cracking.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20162903\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit switch (auto-reset)\u003c\/li\u003e\n\u003cli\u003eTrip Point: 150°F (open on rise)\u003c\/li\u003e\n\u003cli\u003eCompatible Model: GCH950904CXAE\u003c\/li\u003e\n\u003cli\u003eFunction: Overheat protection \/ heat-exchanger safety cutoff\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe trip temperature and disc placement are matched to this furnace's cabinet geometry. The OEM 20162903 opens at exactly 150°F where Goodman intended; a generic switch with a different set point or probe length can cause nuisance short-cycling or, worse, fail to protect the heat exchanger. OEM is the safe choice for limit controls.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Two mounting screws and two spade terminals. Turn off power and gas, note wire positions, and confirm the replacement matches the 150°F rating. If the switch keeps tripping, check filters, airflow, and blower operation before assuming the part is bad.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058065719667,"sku":"GOODMAN-10003","price":29.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-gch950904cxae-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}