{"product_id":"oem-goodman-170-f-primary-limit-switch-for-ams80904bna-b1370188","title":"OEM Goodman 170°F Primary Limit Switch for AMS80904BNA — B1370188","description":"\u003ch2\u003eGoodman B1370188 Primary Limit Switch (170°F)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eB1370188 primary high-limit switch\u003c\/strong\u003e is a genuine OEM safety control engineered for the Goodman\/Amana \u003cstrong\u003eAMS80904BNA\u003c\/strong\u003e gas furnace and other compatible 80% AFUE models. This normally-closed thermal switch monitors heat-exchanger temperature and cuts power to the gas valve if the furnace overheats, protecting the unit and your home from unsafe operating conditions. If your furnace is short-cycling on heat, tripping on high limit, or refusing to fire, a failed or drifted limit switch is a common culprit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 170°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit safety switch\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally closed (opens on rise)\u003c\/li\u003e\n\u003cli\u003eMount: Snap-disc, factory bracket fit\u003c\/li\u003e\n\u003cli\u003eFits: Goodman\/Amana AMS80904BNA and related 80% furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part #: B1370188\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur OEM Goodman B1370188 is calibrated to the exact factory trip point of 170°F, ensuring your furnace's safety logic and heat-exchanger protection work as designed. Generic snap-discs may carry a nearby rating but can trip early, run hot, or fail to seat in the factory bracket. For a safety-critical component, we recommend the genuine OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1 of 5).\u003c\/strong\u003e Two spade terminals and one or two mounting screws. Always shut off gas and power at the disconnect before servicing. If you are unsure why the original switch failed, have a licensed HVAC technician confirm there is no underlying airflow or heat-exchanger issue before replacing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057705468275,"sku":"GOODMAN-7060","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-170-f-primary-limit-switch-for-ams80904bna-b1370188","provider":"National HVAC Parts","version":"1.0","type":"link"}