{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-for-gmph075-4-b1370155","title":"OEM Goodman 120°F Auxiliary Limit Switch for GMPH075-4 — B1370155","description":"\u003ch2\u003eGoodman B1370155 Auxiliary Limit Switch (120°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman B1370155 is a genuine OEM auxiliary limit switch designed for the \u003cstrong\u003eGMPH075-4\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana units. Typically located on the blower housing or heat-exchanger panel, this auxiliary high-limit protects against abnormal heat buildup caused by restricted airflow or a stalled blower, opening the control circuit at \u003cstrong\u003e120°F\u003c\/strong\u003e to prevent equipment damage and unsafe operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 120°F\u003c\/li\u003e\n\u003cli\u003eType: Auxiliary high-limit switch\u003c\/li\u003e\n\u003cli\u003eFunction: Secondary overheat \/ airflow safety cutout\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas furnace\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMPH075-4 and select GMP\/GMPH series\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370155\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e switch guarantees the exact 120°F set point and original mounting footprint for a true bolt-in replacement. The \u003cstrong\u003eGeneric\u003c\/strong\u003e alternative delivers the same rating and terminal spacing at a lower price, ideal for budget-conscious repairs. Both restore the auxiliary limit safety loop.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Plan on 10–15 minutes. Cut power at the furnace, transfer the two wire terminals, remove the mounting screws, and seat the new switch flush against the panel for accurate temperature sensing. Confirm the blower and filter airflow are unobstructed after replacement; repeat tripping usually points to a dirty filter, closed registers, or blower fault.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058140791155,"sku":"GOODMAN-12032","price":11.96,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-for-gmph075-4-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}