{"product_id":"oem-goodman-150-f-primary-limit-switch-for-gmt090-4b-b1370198","title":"OEM Goodman 150°F Primary Limit Switch for GMT090-4B — B1370198","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370198 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control built for the \u003cstrong\u003eGMT090-4B\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana heating equipment. This 150°F normally-closed switch is the furnace's main over-temperature guardian: it interrupts the burner circuit whenever plenum temperature climbs too high — commonly from a dirty filter, restricted ductwork, or a failing blower — preventing heat exchanger damage and fire hazards.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e 150°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type:\u003c\/strong\u003e Normally-closed thermal limit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Primary high-limit safety cutout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e Goodman GMT090-4B furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B1370198\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment Type:\u003c\/strong\u003e Gas Furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman B1370198\u003c\/strong\u003e delivers factory-precise 150°F calibration and guaranteed bracket fit for the GMT090-4B. Our compatible \u003cstrong\u003egeneric\u003c\/strong\u003e version matches the same trip point and mounting for a lower cost — ideal for older, out-of-warranty furnaces. For warranty-sensitive or code-critical repairs, we recommend the OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Mounts to the burner box or heat exchanger with two screws and quick-connect terminals — typically a 15-minute swap. Shut off power at the breaker first and verify the correct temperature rating before installing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058159763827,"sku":"GOODMAN-12396","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-gmt090-4b-b1370198","provider":"National HVAC Parts","version":"1.0","type":"link"}