{"product_id":"oem-goodman-120f-auxiliary-limit-switch-for-gmth070-4a-b1370155","title":"OEM Goodman 120F Auxiliary Limit Switch for GMTH070-4A — B1370155","description":"\u003ch2\u003eGoodman B1370155 Auxiliary Limit Switch (120°F)\u003c\/h2\u003e\u003cp\u003eThe B1370155 is a genuine OEM auxiliary high-limit switch for the Goodman GMTH070-4A furnace and compatible Goodman and Amana models. Mounted near the blower or secondary heat-exchanger area, this 120°F auto-reset control senses abnormal temperature and interrupts the heating circuit to prevent overheating when airflow is restricted — for example by a clogged filter or failing blower. It is a common cause of intermittent no-heat and short-cycling complaints.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 120°F\u003c\/li\u003e\n\u003cli\u003eType: Auxiliary auto-reset high-limit switch\u003c\/li\u003e\n\u003cli\u003eFunction: Secondary temperature safety \/ airflow protection\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMTH070-4A and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe factory OEM B1370155 guarantees the correct 120°F calibration and bracket geometry for the GMTH070-4A cabinet. Generic substitutes often differ in trip point or mounting angle, which can cause nuisance trips or improper seating against the heat exchanger. Choose OEM for reliable, safe operation.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Disconnect power, unplug the two spade connectors, remove the mounting screw(s), and reverse to install. About 10–15 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058166088051,"sku":"GOODMAN-12546","price":11.96,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120f-auxiliary-limit-switch-for-gmth070-4a-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}