{"product_id":"oem-goodman-150-f-primary-limit-switch-for-amh80903bnac-b1370198","title":"OEM Goodman 150°F Primary Limit Switch for AMH80903BNAC — B1370198","description":"\u003ch2\u003eGoodman B1370198 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThe OEM Goodman B1370198 is the primary high-limit safety switch for the \u003cstrong\u003eGoodman\/Amana AMH80903BNAC\u003c\/strong\u003e gas furnace and compatible 80% AFUE units. Mounted on the heat exchanger housing, it opens the gas valve circuit whenever supply-air temperature exceeds the 150°F trip point — the front-line defense against a cracked or overheated heat exchanger caused by dirty filters, blocked ducts, or blower failure.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 150°F (open on rise)\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit switch\u003c\/li\u003e\n\u003cli\u003eContact configuration: Normally closed, automatic reset\u003c\/li\u003e\n\u003cli\u003eCompatible model: AMH80903BNAC and related 80% furnaces\u003c\/li\u003e\n\u003cli\u003eGenuine Goodman\/Amana OEM component\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause the primary limit is the furnace's main overheat safeguard, exact calibration matters. The genuine OEM B1370198 trips precisely at 150°F as designed. Aftermarket units can drift out of spec, leading to short-cycling on limit or, worse, delayed shut-off. OEM keeps your furnace within manufacturer safety tolerances and warranty terms.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e The switch fastens with one or two screws and two spade connectors. Always cut power and gas before servicing, photograph the wiring, and confirm the mounting orientation matches the original. When in doubt, use a licensed HVAC professional — this component is safety-critical.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057629479283,"sku":"GOODMAN-5721","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-amh80903bnac-b1370198","provider":"National HVAC Parts","version":"1.0","type":"link"}