{"product_id":"oem-goodman-300-f-rollout-limit-switch-for-gmt045-3b-b1370145","title":"OEM Goodman 300°F Rollout Limit Switch for GMT045-3B — B1370145","description":"\u003ch2\u003eGoodman B1370145 300°F Flame Rollout Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370145\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003e300°F\u003c\/strong\u003e flame rollout limit switch designed as an exact-fit replacement for the \u003cstrong\u003eGoodman GMT045-3B\u003c\/strong\u003e gas furnace. This manual-reset safety control shuts off the gas valve if flames roll out of the burner box — a critical protection against overheating caused by a blocked heat exchanger, poor combustion airflow, or a cracked exchanger. If your furnace locks out on a rollout fault or the switch will not reset, this is the part to replace.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370145 (OEM Goodman)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e 300°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Flame rollout safety limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Manual push-button reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e GMT045-3B furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman \/ Amana\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370145\u003c\/strong\u003e is calibrated to the exact 300°F trip point and terminal layout specified for this furnace, so the safety circuit behaves as the factory intended. Because this is a safety device, OEM is strongly recommended — a mismatched generic trip temperature can nuisance-trip or, worse, fail to protect. Only substitute a generic switch with an identical 300°F rating and terminal style.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eRemove two mounting screws, transfer the spade wire terminals, and mount the new switch. Plan 10–15 minutes. Always shut off gas and power before servicing. \u003cstrong\u003eImportant:\u003c\/strong\u003e a tripped rollout switch signals an underlying combustion or heat-exchanger problem — have the root cause inspected before returning the furnace to service.\u003c\/p\u003e\u003cp\u003eCompatible with Goodman GMT045-3B. Confirm your part number before ordering.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058155766131,"sku":"GOODMAN-12279","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-rollout-limit-switch-for-gmt045-3b-b1370145","provider":"National HVAC Parts","version":"1.0","type":"link"}