{"product_id":"oem-goodman-300-f-rollout-limit-switch-for-gmnt090-3b-b1370145","title":"OEM Goodman 300°F Rollout Limit Switch for GMNT090-3B — B1370145","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370145 Flame Rollout Limit Switch\u003c\/strong\u003e is a genuine OEM safety control for the \u003cstrong\u003eGMNT090-3B\u003c\/strong\u003e gas furnace. This manual-reset switch opens at \u003cstrong\u003e300°F\u003c\/strong\u003e to shut down the gas valve if flames roll out of the burner box — a critical protection against blocked heat exchangers, restricted venting, or dirty burners. A tripped rollout switch is often the first warning sign of a combustion or venting problem.\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, manual reset\u003c\/li\u003e\n\u003cli\u003eTrip Temperature: 300°F (open on rise)\u003c\/li\u003e\n\u003cli\u003eCompatible Model: GMNT090-3B (90,000 BTU furnace)\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (OEM)\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 Goodman's exact 300°F trip point and mounting footprint. Because this is a life-safety device, precise calibration matters — a generic switch with a loose tolerance can trip early (nuisance shutdowns) or, worse, trip late. Always match the OEM trip temperature. Note: if the switch has tripped, diagnose and correct the root cause (blocked flue, cracked heat exchanger, dirty burners) before returning the furnace to service.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eRated 1\/5. With power and gas off, remove the two mounting screws, transfer the spade connectors, and mount the new switch. A 5–10 minute job for most homeowners. Never bypass or jumper a rollout switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058130010483,"sku":"GOODMAN-11692","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-rollout-limit-switch-for-gmnt090-3b-b1370145","provider":"National HVAC Parts","version":"1.0","type":"link"}