{"product_id":"oem-goodman-300-f-rollout-limit-switch-for-dms80704bna-b1370145","title":"OEM Goodman 300°F Rollout Limit Switch for DMS80704BNA — B1370145","description":"\u003ch2\u003eGoodman B1370145 Flame Rollout Limit Switch (300°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman B1370145 is a genuine OEM flame rollout limit switch rated to open at 300°F, built for the Goodman DMS80704BNA furnace and compatible models. Mounted on the burner box, this safety switch senses flame rollout — flames escaping the burner area due to a blocked heat exchanger, cracked exchanger, or venting failure. When it detects excessive heat, it cuts power to the gas valve and shuts the furnace down, protecting your home from unsafe combustion conditions.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: B1370145\u003c\/li\u003e\n\u003cli\u003eType: Flame rollout limit switch\u003c\/li\u003e\n\u003cli\u003eTrip temperature: 300°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003eReset: Manual reset\u003c\/li\u003e\n\u003cli\u003eFits: Goodman DMS80704BNA and related furnaces\u003c\/li\u003e\n\u003cli\u003eFunction: Combustion safety \/ high-limit rollout protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM B1370145 is calibrated to the exact 300°F trip point Goodman's engineering specifies for this burner box. Because this is a life-safety device, an incorrectly rated generic switch could trip too late (unsafe) or nuisance-trip too early. Always match the OEM temperature rating — never bypass a tripped rollout switch.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eRating: Easy (2\/5).\u003c\/strong\u003e Shut off gas and power, disconnect the two spade terminals, remove the mounting screws, and install the new switch. A 15–20 minute job. Important: if the switch had tripped, diagnose and correct the root cause (blocked exchanger, bad inducer, venting issue) before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058034098547,"sku":"GOODMAN-9588","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-rollout-limit-switch-for-dms80704bna-b1370145","provider":"National HVAC Parts","version":"1.0","type":"link"}