{"product_id":"oem-goodman-250f-primary-limit-switch-for-gmth115-5-b1370194","title":"OEM Goodman 250F Primary Limit Switch for GMTH115-5 — B1370194","description":"\u003ch2\u003eGoodman B1370194 Primary Limit Switch (250°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370194\u003c\/strong\u003e is a genuine OEM primary high-limit switch rated at \u003cstrong\u003e250°F\u003c\/strong\u003e, built for \u003cstrong\u003eGMTH115-5\u003c\/strong\u003e gas furnaces. Mounted on the heat exchanger's supply-air side, this primary limit is the furnace's main overheat protection — it opens the burner circuit if the plenum temperature climbs too high due to a dirty filter, closed dampers, or a failing blower, preventing heat-exchanger damage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 250°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit safety switch\u003c\/li\u003e\n\u003cli\u003eContacts: Normally closed\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (OEM)\u003c\/li\u003e\n\u003cli\u003ePart number: B1370194\u003c\/li\u003e\n\u003cli\u003eFits: GMTH115-5 furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause the primary limit directly protects the heat exchanger, the 250°F set-point must match the furnace design exactly. The genuine Goodman B1370194 is factory-calibrated for correct, repeatable operation. Aftermarket limits with off-spec set-points risk nuisance shutdowns or inadequate protection, so OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate\u003c\/strong\u003e — power off, remove the burner\/blower panel to access the limit on the heat-exchanger bracket, unscrew, transfer wiring, and reinstall in the same orientation. Plan on 20–30 minutes. If the switch keeps tripping, correct the airflow restriction before final testing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058167267699,"sku":"GOODMAN-12593","price":46.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-250f-primary-limit-switch-for-gmth115-5-b1370194","provider":"National HVAC Parts","version":"1.0","type":"link"}