{"product_id":"oem-goodman-220f-primary-limit-switch-for-gdt115-5b-b1370191","title":"OEM Goodman 220F Primary Limit Switch for GDT115-5B — B1370191","description":"\u003ch2\u003eGoodman B1370191 220°F Primary High-Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370191\u003c\/strong\u003e is a genuine OEM primary high-limit switch built for the \u003cstrong\u003eGDT115-5B\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Positioned on the heat-exchanger\/burner bulkhead, this \u003cstrong\u003e220°F\u003c\/strong\u003e limit is the furnace's main overheat safety — it opens the gas control circuit when supply-plenum temperatures exceed safe levels, most often due to dirty filters, blocked ductwork, or a stalled blower. A failed primary limit is a frequent cause of furnaces that ignite briefly then shut down on a safety fault.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 220°F (open on rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset type:\u003c\/strong\u003e Automatic reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Primary high-limit \/ heat-exchanger overheat protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits model:\u003c\/strong\u003e GDT115-5B furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e B1370191\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman (genuine OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause the primary limit is safety-critical, the \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e switch is strongly preferred: it is factory-calibrated to the exact 220°F trip point and uses the correct sensing element length and mounting flange for your model. Generic universal limits require careful cross-referencing and may not seat correctly, risking nuisance trips or unsafe operation.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Requires removing the burner-compartment panel to access the mounting flange (usually two screws) and transferring two spade connectors. Always shut off gas and electrical power first. Plan on 15–20 minutes; professional installation recommended if you're unsure.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058081972595,"sku":"GOODMAN-10503","price":67.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-220f-primary-limit-switch-for-gdt115-5b-b1370191","provider":"National HVAC Parts","version":"1.0","type":"link"}