{"product_id":"oem-goodman-170-f-primary-limit-switch-for-amh80704bnac-b1370188","title":"OEM Goodman 170°F Primary Limit Switch for AMH80704BNAC — B1370188","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370188 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control for \u003cstrong\u003eAMH80704BNAC\u003c\/strong\u003e Goodman and Amana gas furnaces. Positioned over the heat exchanger in the supply-air stream, this switch continuously monitors plenum temperature and opens at approximately \u003cstrong\u003e170°F\u003c\/strong\u003e to de-energize the gas valve if the furnace overheats — a common symptom of restricted airflow, a dirty filter, or blower failure. It is the furnace's primary defense against heat-exchanger damage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370188\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e 170°F open on rise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAction:\u003c\/strong\u003e Normally closed, automatic reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Goodman \/ Amana AMH80704BNAC 80% AFUE furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Genuine OEM Goodman\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe primary limit's calibration protects your most expensive furnace component — the heat exchanger. Generic switches with imprecise set points can trip early (nuisance short-cycling) or too late (allowing dangerous overheating). The \u003cstrong\u003eOEM B1370188\u003c\/strong\u003e delivers the exact 170°F cutout, insertion depth, and bracket dimensions Goodman specified for the AMH80704BNAC.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eRated \u003cstrong\u003eEasy (1\/5)\u003c\/strong\u003e. Shut off power, unplug the two terminals, remove the two mounting screws, and slide the replacement into the same location on the heat-exchanger panel. Restore power and verify the furnace completes a full heat cycle without tripping. Typically a 10–15 minute job. Address any underlying airflow restriction before returning the unit to service.\u003c\/p\u003e\u003cp\u003eProtect your Goodman or Amana furnace with genuine OEM overheat protection.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057613357427,"sku":"GOODMAN-5372","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-170-f-primary-limit-switch-for-amh80704bnac-b1370188","provider":"National HVAC Parts","version":"1.0","type":"link"}