{"product_id":"oem-goodman-300-f-rollout-limit-switch-for-gmth045-3-b1370145","title":"OEM Goodman 300°F Rollout Limit Switch for GMTH045-3 — B1370145","description":"\u003ch2\u003eGoodman B1370145 Flame Rollout Limit Switch (300°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370145\u003c\/strong\u003e is a genuine OEM 300°F flame rollout limit switch for \u003cstrong\u003eGMTH045-3\u003c\/strong\u003e gas furnaces. This manual-reset safety device mounts on the burner assembly and opens the ignition circuit if flames roll out of the burner box — a critical protection against overheating caused by a blocked heat exchanger, failed inducer, or restricted venting. A tripped or failed rollout switch will prevent the furnace from firing until the underlying cause is corrected and the switch is reset or replaced.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip Temperature: 300°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003eReset: Manual push-button\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370145\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMTH045-3 furnace\u003c\/li\u003e\n\u003cli\u003eApplication: Flame rollout safety limit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause this is a life-safety component, exact temperature calibration and mounting geometry matter. Genuine OEM guarantees the correct 300°F trip point and bracket fit. Generic switches with an incorrect setpoint can either nuisance-trip or, worse, fail to protect against a real rollout condition. Always use the OEM-spec part here.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5)\u003c\/strong\u003e — Disconnect power, note the wiring, remove the two mounting screws, transfer the terminals to the new switch, and remount. \u003cstrong\u003eImportant:\u003c\/strong\u003e a repeatedly tripping rollout switch signals a serious fault — have a licensed technician diagnose the root cause before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058165236083,"sku":"GOODMAN-12514","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-rollout-limit-switch-for-gmth045-3-b1370145","provider":"National HVAC Parts","version":"1.0","type":"link"}