{"product_id":"oem-goodman-150-f-primary-limit-switch-for-gmnt140-5b-b1370198","title":"OEM Goodman 150°F Primary Limit Switch for GMNT140-5B — B1370198","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370198 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-temperature safety control engineered for the \u003cstrong\u003eGMNT140-5B\u003c\/strong\u003e gas furnace and other compatible Goodman\/Amana multi-position models. Mounted on the heat exchanger or blower deck, this limit switch continuously monitors supply-air temperature and interrupts the burner circuit if the furnace overheats — protecting the heat exchanger and preventing unsafe operation. When a furnace short-cycles, trips on high limit, or the blower runs without heat, a failed limit switch is a common cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip point:\u003c\/strong\u003e 150°F (opens on temperature rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit \/ temperature-sensing safety switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e Standard 1\/4\" quick-connect spade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMNT140-5B and compatible GMN\/GMNT series furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Genuine Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eChoosing the \u003cstrong\u003egenuine Goodman OEM B1370198\u003c\/strong\u003e guarantees the exact trip temperature, mounting footprint, and UL-recognized calibration your furnace's safety chain was designed around. Generic aftermarket limits may look similar but often differ in reset behavior or trip tolerance, which can cause nuisance lockouts or fail to protect the heat exchanger. For a safety-critical control, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy–Moderate (2 \/ 5).\u003c\/strong\u003e Replacement takes most homeowners 15–20 minutes with a nut driver and needle-nose pliers. Always shut off power and gas before servicing. Note wire positions, remove the two mounting screws, transfer the leads, and reinstall. If unsure about the safety circuit, have a licensed HVAC technician perform the swap.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058132828531,"sku":"GOODMAN-B1370198","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-gmnt140-5b-b1370198","provider":"National HVAC Parts","version":"1.0","type":"link"}