{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-for-gdt090-4b-b1370155","title":"OEM Goodman 120°F Auxiliary Limit Switch for GDT090-4B — B1370155","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370155 Auxiliary Limit Switch\u003c\/strong\u003e is a genuine OEM safety component engineered for the Goodman\/Amana \u003cstrong\u003eGDT090-4B\u003c\/strong\u003e gas furnace and compatible platform models. This normally-closed thermal switch opens at approximately 120°F to protect the furnace against abnormal heat buildup around the blower compartment or secondary heat exchanger, shutting down the burner circuit before damage or an unsafe condition can develop.\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)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Auxiliary \/ rollout limit safety cutout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact type:\u003c\/strong\u003e Normally closed, automatic reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana GDT090-4B and related furnace models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bracket-mount with quick-connect terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Genuine Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause this is a life-safety component, the \u003cstrong\u003eOEM B1370155\u003c\/strong\u003e is calibrated to Goodman's exact trip point and factory tolerances, ensuring the furnace's control logic behaves as designed. Generic universal limit switches may carry a similar temperature rating but can vary in reset behavior, bracket geometry, and terminal spacing — often requiring modification and risking nuisance trips or delayed shutdowns. For a safety switch, we recommend genuine OEM.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Replacement typically takes under 15 minutes: shut off power and gas, disconnect the two spade terminals, unscrew the bracket, and reverse the process with the new switch. Always verify furnace operation and confirm the switch resets properly after a heat cycle. If you are unsure or smell gas, contact a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057146708339,"sku":"GOODMAN-B1370155","price":11.96,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-for-gdt090-4b-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}