{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-for-gmn100-4-b1370113","title":"OEM Goodman 120°F Auxiliary Limit Switch for GMN100-4 — B1370113","description":"\u003ch2\u003eGoodman B1370113 120°F Auxiliary Limit Switch\u003c\/h2\u003e\u003cp\u003eThe B1370113 is a genuine Goodman OEM auxiliary limit switch rated to open at approximately \u003cstrong\u003e120°F\u003c\/strong\u003e, designed for the \u003cstrong\u003eGMN100-4\u003c\/strong\u003e gas furnace. This normally-closed safety control monitors cabinet and blower-compartment temperature and cuts power to the burners if airflow is lost or heat builds beyond safe limits. A failed or nuisance-tripping limit switch causes short cycling, no-heat calls, or a furnace that won't fire — replacing it restores safe, reliable heating.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpen temperature: ~120°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003eType: Auxiliary \/ secondary limit, normally closed\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370113\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMN100-4 and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eFunction: Over-temperature and loss-of-airflow safety cutout\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e switch is factory-calibrated to the exact 120°F trip point and mounting footprint your furnace expects. A \u003cem\u003egeneric\u003c\/em\u003e substitute with a different set point or terminal layout can cause premature trips or defeat a critical safety function. For heating safety, always match the OEM specification.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — Two mounting screws and quick-connect spade terminals. Typically a 10–15 minute repair with a nut driver. Shut off gas and electrical power before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058126537075,"sku":"GOODMAN-11581","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-for-gmn100-4-b1370113","provider":"National HVAC Parts","version":"1.0","type":"link"}