{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-for-gmt140-5d-b1370155","title":"OEM Goodman 120°F Auxiliary Limit Switch for GMT140-5D — B1370155","description":"\u003ch2\u003eGoodman B1370155 120°F Auxiliary Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370155\u003c\/strong\u003e is a genuine OEM auxiliary (rollout\/secondary) limit switch designed for the \u003cstrong\u003eGMT140-5D\u003c\/strong\u003e gas furnace and related Goodman and Amana models. This 120°F auto-reset control monitors temperature in the blower or vestibule area and interrupts the circuit if heat rises beyond safe limits — a critical backup to the primary high limit. Failed auxiliary limits often cause intermittent no-heat calls or short cycling.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 120°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003eReset type: Automatic reset (closes on cool-down)\u003c\/li\u003e\n\u003cli\u003eCircuit: Normally closed (N.C.)\u003c\/li\u003e\n\u003cli\u003eTerminals: 1\/4\" male quick-connect spades\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370155\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMT140-5D and select GMT\/GMS series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eGenuine \u003cstrong\u003eGoodman OEM\u003c\/strong\u003e auxiliary limits are matched to the low 120°F setpoint and mounting footprint your furnace requires. Generic substitutes frequently ship with incorrect trip temperatures or bracket geometry, leading to premature nuisance trips and comfort complaints. Choosing OEM preserves manufacturer specs and warranty coverage.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Disconnect furnace power, note wire positions, slide off the spade connectors, unscrew the switch, and install the replacement. Typical time is 10–15 minutes. If the new switch trips again quickly, check blower operation and airflow before assuming a defective part.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058164711795,"sku":"GOODMAN-12496","price":11.96,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-for-gmt140-5d-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}