{"product_id":"oem-goodman-300-f-rollout-limit-switch-for-gmt070-4b-b1370145","title":"OEM Goodman 300°F Rollout Limit Switch for GMT070-4B — B1370145","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370145 Rollout Switch\u003c\/strong\u003e is a genuine OEM 300°F manual-reset flame rollout limit switch for the \u003cstrong\u003eGoodman GMT070-4B\u003c\/strong\u003e gas furnace. Mounted on the burner assembly, it monitors for flame rollout — flames escaping the burner box due to a blocked flue, restricted combustion air, or a cracked heat exchanger — and instantly cuts power to the gas valve to prevent fire and carbon-monoxide hazards. After tripping, it must be manually reset once the underlying fault is cleared.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 300°F\u003c\/li\u003e\n\u003cli\u003eReset type: Manual (push-button)\u003c\/li\u003e\n\u003cli\u003eFunction: Flame rollout safety cutoff\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370145\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMT070-4B gas furnace\u003c\/li\u003e\n\u003cli\u003eTerminal type: Quick-connect spade\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman switch\u003c\/strong\u003e is factory-calibrated to the precise 300°F trip point required by your furnace's burner design. As a life-safety component, it should never be substituted with a switch of a different temperature rating — an off-spec part risks nuisance shutdowns or a failure to protect. Insist on the OEM-specified B1370145.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy.\u003c\/strong\u003e Shut off power and gas, disconnect the two spade terminals, remove the mounting screws, and install the replacement. About 15 minutes. \u003cstrong\u003eNote:\u003c\/strong\u003e a rollout trip indicates a genuine combustion fault — always diagnose and repair the cause before restoring operation.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058158190963,"sku":"GOODMAN-12338","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-rollout-limit-switch-for-gmt070-4b-b1370145","provider":"National HVAC Parts","version":"1.0","type":"link"}