{"product_id":"oem-goodman-300-f-rollout-limit-switch-gmt090-4a-b1370145","title":"OEM Goodman 300°F Rollout Limit Switch GMT090-4A — B1370145","description":"\u003ch2\u003eGoodman B1370145 Flame Rollout Switch (300°F)\u003c\/h2\u003e\u003cp\u003eThe genuine Goodman \u003cstrong\u003eB1370145\u003c\/strong\u003e is a 300°F manual-reset flame rollout limit switch — a critical safety control on your \u003cstrong\u003eGMT090-4A\u003c\/strong\u003e furnace. Mounted near the burner assembly, it opens the ignition circuit and shuts down the furnace if flames roll out of the burner box due to a blocked heat exchanger, cracked exchanger, or poor venting. If your furnace locks out on a rollout fault, this inexpensive part is often the fix — but always investigate \u003cem\u003ewhy\u003c\/em\u003e it tripped before resetting or replacing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e B1370145\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 300°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset type:\u003c\/strong\u003e Manual reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Flame rollout \/ high-limit safety cutout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMT090-4A furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause this is a life-safety component, the exact OEM trip temperature and terminal configuration matter. Genuine Goodman ensures the switch opens at the engineered 300°F setpoint. Generic switches with a different rating can nuisance-trip or, worse, fail to protect against a genuine rollout condition. Never substitute a lower- or higher-rated part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — A single-bracket, two-terminal spade connection. Roughly 10–15 minutes. \u003cstrong\u003eImportant:\u003c\/strong\u003e A tripped rollout switch indicates an underlying combustion or venting problem — diagnose the root cause before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058159632755,"sku":"GOODMAN-12393","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-rollout-limit-switch-gmt090-4a-b1370145","provider":"National HVAC Parts","version":"1.0","type":"link"}