{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-for-gmnt120-5-b1370113","title":"OEM Goodman 120°F Auxiliary Limit Switch for GMNT120-5 — B1370113","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370113 Auxiliary Limit Switch\u003c\/strong\u003e is a genuine OEM safety control engineered for the \u003cstrong\u003eGMNT120-5\u003c\/strong\u003e gas furnace. This normally-closed thermal switch opens at 120°F to interrupt burner operation if secondary heat exchanger or blower compartment temperatures climb beyond safe limits, protecting the furnace and your home from overheat conditions.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 120°F (open on rise, auto-reset on cool)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Auxiliary \/ secondary high-limit protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e Normally closed (SPST)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e Goodman\/Amana GMNT120-5 and compatible furnace platforms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Bimetal snap-disc thermal switch\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eChoosing the genuine OEM B1370113 guarantees the exact trip calibration and mounting footprint Goodman specified for this furnace. Aftermarket snap-discs may share a temperature rating but often vary in reset tolerance and bracket geometry, which can cause nuisance tripping or improper seating. For a safety-critical limit, OEM is the reliable choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (DIY-friendly).\u003c\/strong\u003e Replacement is typically two screws and two spade terminals. Always cut power at the breaker before servicing. If the switch trips repeatedly after replacement, investigate airflow restrictions or a cracked heat exchanger rather than replacing the switch again.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eCompatible with GMNT120-5. Verify your existing part number before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058131517811,"sku":"GOODMAN-11745","price":10.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-for-gmnt120-5-b1370113","provider":"National HVAC Parts","version":"1.0","type":"link"}