{"product_id":"oem-goodman-140-f-stack-overtemp-limit-switch-for-gsu100-4-b1370253","title":"OEM Goodman 140°F Stack Overtemp Limit Switch for GSU100-4 — B1370253","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370253 Stack Over-Temperature Limit Switch\u003c\/strong\u003e monitors flue\/vent temperature and protects the furnace against overheating in the venting path. It is a direct-fit replacement for the \u003cstrong\u003eGoodman GSU100-4\u003c\/strong\u003e and trips at \u003cstrong\u003e140°F\u003c\/strong\u003e to interrupt operation when stack temperatures climb outside the safe range.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 140°F\u003c\/li\u003e\n\u003cli\u003eType: Normally-closed stack over-temp limit\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GSU100-4 furnace\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370253\u003c\/li\u003e\n\u003cli\u003eFunction: Flue \/ stack over-temperature safety\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe precise \u003cstrong\u003e140°F\u003c\/strong\u003e trip point is what makes this switch protect correctly without nuisance shutdowns. Because generic replacements often ship at different temperature ratings and terminal styles, the \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e switch is the safest choice for this over-temp circuit. Never bypass or defeat a stack limit.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Easy (DIY-friendly).\u003c\/strong\u003e Shut off power, remove the two mounting screws, swap the push-on terminals, and remount in the same location so the sensing surface contacts the stack correctly. Repeated tripping usually points to a venting or draft problem — inspect the flue before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058182766963,"sku":"GOODMAN-13017","price":8.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-140-f-stack-overtemp-limit-switch-for-gsu100-4-b1370253","provider":"National HVAC Parts","version":"1.0","type":"link"}