{"product_id":"oem-goodman-high-limit-switch-for-gmth090-5a-furnace-b1370193","title":"OEM Goodman High Limit Switch for GMTH090-5A Furnace — B1370193","description":"\u003ch2\u003eGoodman B1370193 High Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370193 high limit switch\u003c\/strong\u003e is a genuine OEM safety control engineered for the \u003cstrong\u003eGMTH090-5A\u003c\/strong\u003e gas furnace. This normally-closed thermal switch monitors heat-exchanger temperature and cuts power to the burner circuit if the furnace overheats — protecting the heat exchanger, blower, and surrounding cabinet from thermal damage. When a furnace short-cycles, blows the limit, or locks out on high temperature, a failed or drifting limit switch is one of the most common causes.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: B1370193 (OEM Goodman)\u003c\/li\u003e\n\u003cli\u003eType: High limit \/ thermal safety switch\u003c\/li\u003e\n\u003cli\u003eFunction: Normally closed, opens on rising temperature\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMTH090-5A gas furnace\u003c\/li\u003e\n\u003cli\u003eMounting: Bracket-mount on heat exchanger \/ burner assembly\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370193\u003c\/strong\u003e is calibrated to the exact trip temperature Goodman specifies for this furnace, ensuring the burner cycles off at the correct threshold. Generic aftermarket limits may trip early (nuisance shutdowns) or late (safety risk). For a safety control, we recommend the OEM part; a compatible generic is offered for budget repairs where an exact-match rating is confirmed.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eRated \u003cstrong\u003eEasy\u003c\/strong\u003e — a two-wire disconnect and a couple of mounting screws. Always shut off gas and power at the disconnect before servicing. If you are unsure why the limit tripped (dirty filter, blocked airflow, failed blower), diagnose the root cause before replacing the switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057148576115,"sku":"GOODMAN-B1370193","price":15.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-high-limit-switch-for-gmth090-5a-furnace-b1370193","provider":"National HVAC Parts","version":"1.0","type":"link"}