{"product_id":"oem-goodman-stack-overtemp-limit-switch-for-gmnt040-3b-b1370254","title":"OEM Goodman Stack Overtemp Limit Switch for GMNT040-3B — B1370254","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370254 Stack Overtemp Limit Switch\u003c\/strong\u003e is a genuine OEM safety control designed for \u003cstrong\u003eGMNT040-3B\u003c\/strong\u003e gas furnaces and compatible Goodman\/Amana models. This manual-reset high-limit switch monitors flue and heat-exchanger temperatures, opening the circuit to shut down the burners if the unit overheats — protecting the heat exchanger from cracking and preventing dangerous overtemp conditions.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370254\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Stack \/ overtemp limit switch (safety cut-out)\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:\u003c\/strong\u003e Goodman GMNT040-3B and compatible furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Opens on excessive temperature rise\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is a \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e part, calibrated to the exact trip temperature specified for your furnace. Generic aftermarket limit switches may open at the wrong setpoint, causing nuisance lockouts or — worse — failing to trip when they should. For a safety-critical component, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Disconnect power, unplug the two spade terminals, remove the mounting screws, and swap in the new switch. Typical replacement takes 10–15 minutes with basic hand tools. If the switch tripped, always diagnose the root cause (dirty filter, blocked flue, failing blower) before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058127716723,"sku":"GOODMAN-11620","price":13.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-stack-overtemp-limit-switch-for-gmnt040-3b-b1370254","provider":"National HVAC Parts","version":"1.0","type":"link"}