{"product_id":"oem-goodman-170-f-primary-limit-switch-for-amh80904bnaa-b1370188","title":"OEM Goodman 170°F Primary Limit Switch for AMH80904BNAA — B1370188","description":"\u003ch2\u003eGoodman B1370188 Primary Limit Switch (170°F)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eB1370188 primary limit switch\u003c\/strong\u003e is a genuine OEM safety control engineered for the Goodman\/Amana \u003cstrong\u003eAMH80904BNAA\u003c\/strong\u003e 80% AFUE gas furnace. This normally-closed thermal switch monitors heat-exchanger temperature and cuts power to the burners if the furnace overheats — protecting against restricted airflow, a failed blower, or a dirty filter. When your furnace short-cycles, trips on limit, or won't fire, a drifted or open limit switch is a common culprit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip point:\u003c\/strong\u003e 170°F open, auto-reset on cool\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Normally-closed manual\/auto high-limit safety switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e Direct flange-mount, factory-matched terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman \/ Amana AMH80904BNAA and compatible 80% furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e B1370188 (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur \u003cstrong\u003eOEM B1370188\u003c\/strong\u003e ships to the exact factory trip temperature and calibration, guaranteeing correct furnace safety operation and preserving your equipment warranty. A generic universal limit may carry a different set point or bracket, risking nuisance trips or an unsafe override. For a safety-critical component, we recommend the genuine OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy (1\/5)\u003c\/h3\u003e\u003cp\u003eA typical swap takes 15–20 minutes with a nut driver. Shut off gas and power at the disconnect, remove the two mounting screws, transfer the wire leads, and reinstall. No recalibration required. Always verify furnace operation after replacement.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057632002419,"sku":"GOODMAN-B1370188","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-170-f-primary-limit-switch-for-amh80904bnaa-b1370188","provider":"National HVAC Parts","version":"1.0","type":"link"}