{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-for-gsms100-4-b1370155","title":"OEM Goodman 120°F Auxiliary Limit Switch for GSMS100-4 — B1370155","description":"\u003ch2\u003eGoodman B1370155 Auxiliary Limit Switch (120°F)\u003c\/h2\u003e\u003cp\u003eThe genuine OEM Goodman B1370155 is a factory-calibrated auxiliary high-limit switch engineered for the Goodman GSMS100-4 gas furnace and compatible Goodman\/Amana models. This bimetallic snap-disc safety control monitors cabinet and blower-compartment temperature, opening the control circuit to shut down the furnace if heat builds beyond safe limits — protecting the heat exchanger, wiring, and surrounding components from overheating damage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip point: 120°F auxiliary limit\u003c\/li\u003e\n\u003cli\u003eType: Automatic-reset bimetallic snap-disc\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GSMS100-4 and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370155\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (genuine OEM)\u003c\/li\u003e\n\u003cli\u003eApplication: Gas furnace safety limit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine Goodman B1370155 is calibrated to the exact factory trip temperature and mounting footprint, ensuring correct nuisance-free operation. Generic aftermarket switches may vary in trip tolerance or terminal orientation, risking premature lockouts or improper safety response. For a critical safety device, the OEM part is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Disconnect power, remove the two mounting screws and quick-connect terminals, and swap in the replacement. Basic hand tools and 10–15 minutes are typically all that is required. Always confirm power is off at the breaker before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058181914995,"sku":"GOODMAN-12980","price":11.96,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-for-gsms100-4-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}